Rafael Nadal and Naomi Osaka are sitting out Wimbledon this year.

FILE - In this Sept. 7, 2014, file photo, Bob, left, and Mike Bryan kiss the men's doubles championship trophy after defeating Marc Lopez and Marcel Granollers, of Spain, in the doubles championship match of the 2014 U.S. Open tennis tournament in New York. American twins Bob and Mike Bryan announced their retirement after a record-breaking doubles career ,Thursday, Aug. 27, 2020, making official what seemed clear when they did not enter the U.S. Open. (AP Photo/Mike Groll, File)NEW YORK American twins Bob and Mike Bryan announced their retirement after a record-breaking doubles career Thursday, making official what seemed clear when they did not enter the U.S. Open. They finished 10 seasons atop the ATP doubles rankings and helped the United States win the Davis Cup in 2007. While he was off the tour, Mike won two additional Grand Slam titles with Jack Sock as his partner.