The Boston Celtics have raised Banner 18 to the rafters.

Jayson Tatum has agreed to a five-year, $314 million contract extension to remain with the Boston Celtics, a person with knowledge of the situation told The Associated Press.

A person familiar with the deal tells The Associated Press that the Dallas Mavericks are trading Tim Hardaway Jr. and three second-round draft picks to the Detroit Pistons for Quentin Grimes.

Boston Celtics center Kristaps Porzingis will miss 5-6 months after left ankle surgery.

The Washington Wizards drafted French 7-footer Alex Sarr with the second pick in the NBA draft.

Kristaps Porzingis returned to play for the Celtics as they attempted to close out the Dallas Mavericks in Game 5 of the NBA Finals.

The Boston Celtics’ catastrophic performance in Game 4 of the NBA Finals gave them a chance to clinch their unprecedented 18th championship under the banners already hanging in the TD Garden rafters.

Kristaps Porzingis will be in uniform and available to play in a limited role when the Boston Celtics try to wrap up a sweep of the NBA Finals in Game 4 against the Dallas Mavericks.

Jayson Tatum scored 31 points and the Boston Celtics held off a furious Dallas rally to reach the brink of a record 18th championship with a 106-99 victory over the Mavericks for a 3-0 lead in the NBA Finals.

Kristaps Porzingis did not play for the Boston Celtics in Game 3 of the NBA Finals because of a rare tendon injury in his lower left leg suffered in the previous game.

Kristaps Porzingis has a dislocated tendon in his lower left leg but hasn’t been ruled out for Game 3 of the NBA Finals for the Boston Celtics against the Dallas Mavericks.

The Boston Celtics had the NBA Finals in mind when they went out and acquired Jrue Holiday.

Mavericks coach Jason Kidd said before the start of the Finals that he didn’t think Kristaps Porzingis received nearly as much praise for his ability as a shot blocker and someone who can alter opponents’ shots.

Jaylen Brown scored 22 points, Kristaps Porzingis added 20 in his first game in more than a month and the Boston Celtics powered past the Dallas Mavericks 107-89 on Thursday night in Game 1 of the NBA Finals.

Bill Walton only spent one full season with the Boston Celtics, but his impact was unforgettable.

The Celtics are prohibitive favorites to win Thursday’s Game 1 of the NBA Finals and odds are on Boston to hoist what would be its record 18th championship banner.

The Celtics traded for 7-footer Kristaps Porzingis this past offseason hoping he might be the missing piece to help them hoist their 18th title.

Kyrie Irving returning to Boston.

So much about the journey the Boston Celtics and Indiana Pacers have taken to the Eastern Conference finals has been about who – they haven’t had to face to get to here.

The Celtics are back in the Eastern Conference finals for the third consecutive season following their 4-1 series victory over the Cleveland Cavaliers.

The Cleveland Cavaliers will try to extend their season without star Donovan Mitchell and Caris LeVert, who were both ruled out prior to Game 5 of their Eastern Conference semifinals matchup with Boston.

Jaylen Brown and Derrick White each scored 25 points and the Boston Celtics advanced to the Eastern Conference semifinals, beating the short-handed Miami Heat 118-84 in Game 5 on Wednesday night.

Derrick White scored a career-high 38 points, Jayson Tatum added 20 points and 10 rebounds, and the Boston Celtics beat the Miami Heat 102-88 to take a 3-1 lead in their Eastern Conference first-round series.

Boston center Kristaps Porzingis left the Celtics’ playoff game in Miami on Monday night late in the first half with what the team said was right calf tightness.

Jayson Tatum and Jaylen Brown each scored 22 points, and the Boston Celtics soundly beat the Miami Heat 104-84 to a take a 2-1 lead in their Eastern Conference first-round playoff series on Saturday night.

There’s a quadrupleheader of playoff games in the NBA on Saturday.

The Celtics spent the regular season racking up superlatives and pulverizing opponents with one of the league’s most versatile rosters.

Jrue Holiday agreed to terms on a four-year, $135 million contract extension with the Celtics, his agent Jason Glushon confirmed.

Nikola Jokic had 32 points, 12 rebounds and 11 assists in leading the Denver Nuggets to a 115-109 win over Boston and a season sweep of the Celtics.

Jayson Tatum made five 3-pointers and scored 32 points and the Boston Celtics overcame Luka Doncic’s second straight triple-double to beat the Dallas Mavericks 138-110 and extend their season-best winning streak to 10 games.

Jaylen Brown scored 30 points, Kristaps Porzingis had 22 and the NBA-leading Boston Celtics easily handled the New York Knicks 116-102 for their eighth consecutive victory.

Jayson Tatum had 26 points, 10 rebounds and nine assists and the Boston Celtics withstood a late rally to beat the Miami Heat 110-106.

Jayson Tatum scored 35 points and sparked a third-quarter rally to help the NBA-leading Boston Celtics to their 40th win of the season, 133-129 over the Washington Wizards.

Jamal Murray scored 35 points, Nikola Jokic finished with 34 and the Denver Nuggets held on to hand the Boston Celtics their first home loss of the season 102-100.

Pistons coach Monty Williams believes that his team can compete with anybody in the NBA, and now he has proof.

Hoping to avoid a 28th straight loss that would match the longest losing streak in NBA history, the Detroit Pistons forced overtime against the league-best Celtics before Boston recovered to win 128-122.

Kristaps Porzingis had 28 points and 11 rebounds, Jayson Tatum added 25 points and the Boston Celtics defeated the Los Angeles Lakers for the first time in Christmas Day meetings 126-115 on Monday.

All-Star guard Tyrese Haliburton recorded the first triple-double of his career and completed a tiebreaking four-point play with 1:33 left as the surprising Indiana Pacers ousted the Boston Celtics from the NBA In-Season Tournament with a 122-112 quarterfinal victory.

Jayson Tatum shook off an illness to have 23 points and 11 rebounds, carrying the Boston Celtics over the Milwaukee Bucks 119-116 on Wednesday night in an early showdown of top Eastern Conference teams.

The offseason moves by the Boston Celtics and Milwaukee Bucks got the attention of the NBA world and those who bet on the sport.

Jaylen Brown wasn't considered to be a surefire NBA superstar when the was drafted in 2016.

Luka Doncic and Kyrie Irving are running it back with the Dallas Mavericks after the All-Star pairing flopped in a two-month debut last season.

It's already been a busy offseason for player movement in the NBA.

Two people with knowledge of the deal say the Washington Wizards have agreed to trade center Kristaps Porzingis to the Boston Celtics as part of a three-team trade that also includes the Celtics trading Marcus Smart to the Memphis Grizzlies.

Dallas Mavericks general manager Nico Harrison isn't say much about an NBA investigation into possible tanking or the future of Kyrie Irving.

Jabari Smith Jr. scored 20 points, and the Houston Rockets went on a 12-0 run late in the fourth quarter to top the Washington Wizards 114-109 in the season finale for both.

Dallas is sitting Kyrie Irving and four other regulars against Chicago in a game with draft implications and with the Mavericks facing postseason elimination if they lose.

Giannis Antetokounmpo scored a career-high 55 points in a return from a one-game absence and the Milwaukee Bucks beat Washington 123-113 to snap the Wizards’ five-game winning streak.

Luka Doncic's unreal stat line on his latest triple-double has gone viral.

Anthony Davis scored 55 points on sizzling 22-of-30 shooting and added 17 rebounds, leading the Los Angeles Lakers over the Washington Wizards 130-119.

Bradley Beal and the Wizards renewed their commitment to each other when he agreed to a five-year deal worth up to $251 million to stay in Washington.

Jalen Brunson scored 28 points while Spencer Dinwiddie added 26 with Luka Doncic resting a sore right ankle and the Dallas Mavericks overwhelmed the Houston Rockets in the second half for a 110-91 victory.

Christian Wood set career highs with eight 3-pointers and 39 points as the Houston Rockets used a huge late run to rally for a 115-97 win over the Washington Wizards.

Stephen Curry dazzled for 47 points on his 34th birthday, Draymond Green returned from a 29-game absence to ignite the defense, and the Golden State Warriors beat the Washington Wizards 126-112.

Kristaps Porzingis scored 25 points in his first game for Washington, and the Wizards beat the Indiana Pacers 133-123.

Luka Doncic scored 28 of his career-high 51 points in the first quarter, and the Dallas Mavericks beat the Los Angeles Clippers 112-105.

Luka Doncic scored a season-high 41 points, including a clutch 3-pointer with 1:01 to play, and tied a season best with 14 rebounds as the surging Dallas Mavericks held off the Toronto Raptors 102-98.

Luka Doncic had a triple-double with 27 points, 12 rebounds and 10 assists and the Dallas Mavericks used a second-half rally to rout Memphis 112-85 on Friday night, ending the Grizzlies’ winning streak at 11 games.

RJ Barrett scored 32 points, Mitchell Robinson had a season-high 19 and the New York Knicks snapped the Dallas Mavericks’ six-game winning streak with a 108-85 victory.

Tim Hardaway Jr. had 19 points and seven assists to lead the Dallas Mavericks to a 130-106 win over the Houston Rockets on Friday night despite missing two stars and their head coach.

Luka Doncic scored 26 points and the Dallas Mavericks celebrated before a ceremony to retire Dirk Nowitzki’s number by beating cold-shooting Stephen Curry and the Golden State Warriors 99-82 on Wednesday night.

Rookie Austin Reaves swished a 3-pointer with 0.9 seconds left in overtime to give the Los Angeles Lakers a 107-104 victory over the Dallas Mavericks.

Kevin Durant scored 24 points, James Harden had 23 points and 12 assists, and the Brooklyn Nets beat Dallas 102-99, handing the Mavericks their fifth consecutive home loss.

Kristaps Porzingis scored 30 points, Luka Dončić had 26 in his return to the Dallas lineup, and the Mavericks defeated the Los Angeles Clippers 112-104 in overtime.

Mikal Bridges and Devin Booker each scored 19 points, Chris Paul added 18 points and 14 assists and the Phoenix Suns ran their winning streak to 11, rallying to beat the Dallas Mavericks 112-104 on Friday night.

Devin Booker scored 24 points, Deandre Ayton had 19 points and 13 rebounds and the Phoenix Suns ran their winning streak to 10 games, beating the Dallas Mavericks 105-98.

The Western Conference has the best regular season team from last year in Utah.

Luka Doncic has signed the richest contract in the history of the Dallas Mavericks.

Luka Doncic is set to sign a $207 million supermax extension with the Dallas Mavericks.

Kawhi Leonard tied his playoff career high with 45 points and the Los Angeles Clippers beat the Dallas Mavericks 104-97 on Friday night, forcing a Game 7 in the first postseason series in NBA history with the road team winning the first six games.

Luka Doncic scored 42 points, Tim Hardaway Jr. hit two free throws with eight seconds left, and the Dallas Mavericks edged the Los Angeles Clippers 105-100 to take a 3-2 lead in the first-round playoff series.

Kawhi Leonard scored 36 points, Paul George added 29 and the Los Angeles Clippers spoiled Luka Doncic’s home playoff debut, beating the Dallas Mavericks 118-108 to get back in the first-round playoff series.

Luka Doncic scored 39 points, Tim Hardaway Jr. added 28 and the Dallas Mavericks again outshot the NBA’s best 3-point team in a 127-121 victory over the Los Angeles Clippers to take a 2-0 lead in the first-round playoff series.

Luka Doncic scored 31 points and the Dallas Mavericks outshot the NBA’s leading team from 3-point range, beating the Los Angeles Clippers 113-103 on Saturday in Game 1 of the first-round playoff series.

Luka Doncic scored 24 points, Tim Hardaway Jr. added 23 and the Dallas Mavericks beat the Brooklyn Nets 113-109 to finish a season sweep.

Buddy Hield scored 27 points, Marvin Bagley III had 23 points and nine rebounds and Sacramento beat Dallas 111-99, giving the also-ran Kings a season sweep of the playoff-contending Mavericks.

Luka Doncic had 18 points and 13 assists and the Dallas Mavericks overcame a 17-point deficit for a 108-93 win over Los Angeles in Lakers star Anthony Davis’ second game back from a long injury absence.

Luka Doncic scored 30 points, leading the Dallas Mavericks to a 115-110 victory over the Lakers in the return of Los Angeles star Anthony Davis from a 30-game injury absence.

John Wall had 31 points in his return from injury as the Houston Rockets snapped a five-game skid with a 102-93 win over the Dallas Mavericks on Wednesday night.

Los Angeles Clippers guard Paul George (13) attempts a layup as Dallas Mavericks forward Maxi Kleber (42) defends during the second half of an NBA basketball game, Monday, March 15, 2021, in Dallas. (AP Photo/Brandon Wade)DALLAS – Kawhi Leonard and the Los Angeles Clippers answered a couple of low moments in their season — and kept rolling on the second night of back-to-backs. Leonard scored 22 points, Marcus Morris Sr. added 14 in a rare start and the Clippers beat the Dallas Mavericks 109-99 on Monday. The Clippers won for the second time in six games while Dallas lost for just the second time in its past seven. Paul George scored 15 as seven Clippers finished in double figures.

Dallas Mavericks' Luka Doncic walks off the court following the team's NBA basketball game against the Oklahoma City Thunder in Dallas, Wednesday, March 3, 2021. It was the sixth game of the season of at least 30 points for Doncic, who turned 22 on Sunday. The second missed game of the season for Doncic was Dallas' last before the All-Star Game on Sunday in Atlanta. Carlisle said Doncic has been battling a back issue recently and has worn a heat massage belt in two recent practices. Ad“It's something he needs to take a game,” Carlisle said.

Dallas Mavericks center Kristaps Porzingis (6) shoots against Brooklyn Nets forward Jeff Green (8) during the second half of an NBA basketball game Saturday, Feb. 27, 2021, in New York. (AP Photo/John Minchillo)NEW YORK – Luka Doncic scored 27 points, Kristaps Porzingis added 18 in his return from injury and the Dallas Mavericks snapped the Brooklyn Nets' eight-game winning streak with a 115-98 victory Saturday night. James Harden had 29 points for the Nets, but only four after halftime while playing as Brooklyn's solo superstar. Kevin Durant missed his seventh straight game with a left hamstring strain and Kyrie Irving rested his surgically repaired right shoulder. Dallas put it away with 12 straight points early in the fourth, making it 106-84 and soon after Harden was removed for good.

(AP Photo/Michael Ainsworth)There was one difference during yet another multigame injury absence for Kristaps Porzingis with the Dallas Mavericks. Porzingis' right knee caused a 10-game absence earlier in his first Dallas season. Porzingis also missed half of the six games during a first-round playoff loss to the Los Angeles Clippers in August. It will be almost two weeks between games for Porzingis if he plays against Brooklyn. AdHis defense has suffered, with Porzingis ranking near the bottom of the NBA in defensive efficiency while averaging 1.6 blocks per game.

Portland Trail Blazers guard Damian Lillard (0) goes for a layup in front of Dallas Mavericks center Kristaps Porzingis (6) during the second half of an NBA basketball game in Dallas, Sunday, Feb. 14, 2021. Lillard hit a tiebreaking 3-pointer in the final minute after a big Dallas rally, and the Trail Blazers held off Doncic and the Mavericks for a 121-118 victory Sunday night. Lillard connected on the go-ahead 3 after Doncic assisted on a tying 3-pointer from Dorian Finney-Smith after the Mavericks trailed by 13 midway through the fourth quarter. Mavericks: Doncic shared the previous club record of 13 straight games with at least 25 points with Mark Aguirre (1983-84) and Dirk Nowitzki (2005-06). The Mavericks and Pistons met just once during the coronavirus-interrupted season, with Dallas winning in Mexico City behind 41 points from Doncic.

Doncic scored a career-high 46 points, Kristaps Porzingis added 36 and the Mavericks overcame Williamson's career-best 36 points in a 143-130 victory over the New Orleans Pelicans on Friday night. The Mavericks matched their season best with a fourth consecutive victory and beat the Pelicans for the fifth straight time. The Pelicans gave up a franchise-record 25 3-pointers for the second consecutive game. Mavericks: Dallas finished above 50% shooting for the third consecutive game while improving to 7-0 when scoring at least 120 points. MORE HISTORY FOR DONCICDoncic tied a franchise record shared by Mark Aguirre (1983-84) and Dirk Nowitzki (2005-06) with his 13th consecutive game of at least 25 points.

(AP Photo/Jeff Chiu)NEW YORK – Derrick Rose is reuniting with Tom Thibodeau after a trade that brings him back to New York. The Knicks agreed to acquire the former NBA MVP from the Detroit Pistons on Sunday, a person with knowledge of the details said. The Knicks will send Dennis Smith Jr. and a second-round pick to the Pistons, the person told The Associated Press. Once it is, it reunites Rose with Thibodeau, his coach in Chicago when the guard became the youngest MVP in NBA history at 22 in 2011. Rose later spent one season in New York, averaging 18 points in 2016-17, before rejoining Thibodeau again in Minnesota.

Dallas Mavericks' Luka Doncic celebrates after sinking a three-point basket in the second half of an NBA basketball game against the Golden State Warriors in Dallas, Saturday, Feb. 6, 2021. (AP Photo/Tony Gutierrez)DALLAS – Luka Doncic couldn't top Stephen Curry's shoulder shimmy, or the second-best scoring night of the Golden State star's career. Doncic tied his career high with 42 points in a scoring duel with Curry, leading the Mavericks to an entertaining 134-132 win over the Warriors on Saturday. The duel between Curry and Doncic got going when they traded 3-pointers late in the first half. They did it again early in the second half, when Doncic hit another one after a Golden State turnover.

Dallas Mavericks guard Josh Richardson (0) defends against Phoenix Suns guard Devin Booker (1) in the first half during an NBA basketball game, Monday, Feb. 1, 2021, in Dallas. Booker hit a 3-pointer with 1.5 seconds left in his return and the Suns rallied past the Dallas Mavericks for the second straight game, winning 109-108 on Monday night. Booker finished with 24 points, 20 in the second half, and 31 minutes. Dallas coach Rick Carlisle said his team was aware it had a foul to give on the Suns’ winning possession. “There’s not going to be any finger-pointing.”TIP-INSSuns: Ayton scored only two points in the second half.

Kawhi Leonard scored 28 points and the Clippers rang up the highest point total of the season against the New York Knicks on Sunday, winning 129-115 for their 10th victory in 11 games. The Clippers shredded the NBA leaders in fewest points per game allowed to break away after leading by one at halftime. The game's start time was moved up four hours by the NBA to 1 p.m., though neither that nor the Knicks' good early shooting seemed to bother the Clippers. Leonard and Jackson each scored 10 points in the period, when the Clippers made five 3-pointers and scored 35 points, taking a 101-91 lead to the fourth. Knicks: The Knicks' previous high for points allowed was 121 to Indiana in their season opener.

(AP Photo/Rick Bowmer)SALT LAKE CITY – Playing without leading scorer Donovan Mitchell didn't slow down the Utah Jazz. Utah never trailed in a 116-104 victory over the Dallas Mavericks on Wednesday night. The Jazz overwhelmed the Mavericks on both ends of the court on their way to their 10th straight victory and the NBA overall lead. Gobert’s dominance around the basket took Dallas out of it early and the Mavericks could never get back on track. The Jazz never let the Mavericks draw closer than 12 points the rest of the way.

Chicago Bulls forward Lauri Markkanen (24) shoots over Dallas Mavericks center Willie Cauley-Stein (33) during the first half of an NBA basketball game, Sunday, Jan. 17, 2021, in Dallas. (AP Photo/Ron Jenkins)DALLAS – Lauri Markkanen had 29 points and 10 rebounds, Garrett Temple scored 15 of his season-high 21 points in the second quarter and the Chicago Bulls ended a four-game losing streak with a 117-101 victory over the Dallas Mavericks on Sunday. Markkanen, in his second game back after missing seven games because of COVID-19 protocols, was 10 of 19 from the field while recording season highs in points and rebounds. Mavericks: Dallas travel to the Raptors' temporary home in Tampa, Florida, on Monday in the second back-to-back of the season. The Mavericks lost at Chicago in the first game of their other back-to-back before winning at Houston.

Dallas Mavericks guard Luka Doncic reacts to a missed shot against the Denver Nuggets during the second quarter of an NBA basketball game Thursday, Jan. 7, 2021, in Denver. (AP Photo/Jack Dempsey)DENVER – Luka Doncic came within one rebound of his second straight triple-double, finishing with 38 points and 13 assists to lead the Dallas Mavericks over the Denver Nuggets 124-117 in overtime Thursday night. Doncic sat out Sunday’s loss to Chicago and responded with his first triple-double of the season against Houston on Monday. Nikola Jokic scored 20 of his 38 points after halftime and grabbed 11 rebounds for Denver. Denver got within three on a 3-pointer from Jokic, but Doncic scored four straight to ice it for the Mavericks.

Phoenix Suns guard Devin Booker (1) drives on Dallas Mavericks guard Jalen Brunson during the second half of an NBA basketball game Wednesday, Dec. 23, 2020, in Phoenix. At least for the first game, the Suns' revamped backcourt performed almost exactly as hoped. Booker scored 22 points, Mikal Bridges added 18 and Phoenix edged the Dallas Mavericks 106-102 on Wednesday in the season opener for both teams. “I like guys who are willing to take the shots,” Suns coach Monty Williams said. Luka Doncic cut the Suns' lead to three with a dunk but after a Booker miss, Bridges grabbed the offensive rebound and Phoenix closed out the victory.

Los Angeles began putting the ball in Leonards hands and he delivered with eight straight Clippers points before consecutive 3-pointers by Reggie Jackson pushed it to 105-89. TIP-INSClippers: Patrick Beverley had a pregame workout before sitting out for the fifth straight game with a left calf strain. Mavericks: Porzingis missed his third straight game with torn cartilage in his right knee. It was the first game Rivers attended in the bubble but hardly his first time watching his son play at Disney. I just kind of sat and watched the game, Rivers said.

LAKE BUENA VISTA, Fla. Kristaps Porzingis will miss the rest of the Dallas Mavericks' series against the Los Angeles Clippers because of a torn ligament in his right knee. The Mavericks said Friday that Porzingis has been receiving treatment for the injury, which he sustained in Game 1 of the series. They added that further treatment options are being explored and he wouldn't be medically cleared the rest of the series. The seventh-seeded Mavericks trail the Clippers 3-2. It was while there that he tore the ACL in his other knee in February 2018.

Montrezl Harrell added 19 points and 11 rebounds for the Clippers, who set a franchise record for points in a playoff game. Los Angeles can clinch the series on Thursday. Leonard scored 22 points and Paul George scored 18 to help Los Angeles take a 76-52 lead at halftime. TIP-INSMavericks: Doncic was issued a technical foul in the second quarter. ... Hardaway and Los Angeles' Marcus Morris were called for double technicals in the second quarter.

LAKE BUENA VISTA, Fla. Dallas Mavericks center Kristaps Porzingis will miss Game 5 of a first-round playoff series against the Los Angeles Clippers because of right knee soreness. It's not the same knee Porzingis had surgically repaired after an injury in what ended up being his final game with the New York Knicks in early 2018. He tore the anterior cruciate ligament in his left knee. The right knee gave Porzingis trouble before the pandemic-forced shutdown of the NBA in March. During the restart, he has been listed on the injury both with right knee soreness and a left heel contusion.

The dynamic Doncic made sure of that with a buzzer-beating, 3-pointer in overtime Sunday to cap another triple-double. Not to be outdone in the nightcap, Mitchell erupted for 51 points in Game 4 to give the sixth-seeded Utah Jazz a 3-1 lead over Denver. Mitchell is playing out of this world right now, Nuggets coach Michael Malone said. Both Doncic and Mitchell are accomplishing rarely seen postseason feats inside the bubble. Whats more, his 28-foot buzzer-beat to win was the second-longest in postseason history, the Mavericks announced on social media.

Two nights after scoring 42 points in the highest-scoring debut in postseason history, Doncic played just nine minutes in the second half. They beat the Clippers for the first time in five meetings this season and earned their first playoff victory since 2016. Kawhi Leonard had 35 points and 10 rebounds, but Paul George had a mostly miserable performance for the second-seeded Clippers. Clippers: Reggie Jackson started in place of Beverley and scored 11 points. The Clippers noticed the guard wasn't moving well at their shootaround and decided to scratch him.

Tim Hardaway Jr. scored 18 points adn Porzingis finished with 14, along with Seth Curry. The Clippers knocked around Doncic, the 21-year-old superstar who led the NBA in triple-doubles, whenever they could. The Clippers swarmed Doncic from the outset, forcing him into three turnovers in the first two minutes while racing to a 10-0 lead. Morris was eager to grab the ball and ended up grabbing Doncic, who sought to push his way free. Clippers: Reserve Montrezl Harrell returned after leaving the team for his grandmother's death and had six points in 15 minutes.