Tennis players are always dealing with match points and the questions they create, whether on a public court or a Grand Slam stage such as at the U.S. Open.

John Isner has headed off into retirement after losing in singles and doubles at the U.S. Open.

It’s been almost two full decades since this many U.S. men reached Week 2 at the Australian Open.

Jenson Brooksby has eliminated No. 2 seed Casper Ruud in four sets in the second round of the Australian Open.

Karolina Muchova of the Czech Republic serves to compatriot Karolina Pliskova during their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Feb. 13, 2021. Crowds were gone from the Australian Open on Saturday because of a five-day hard lockdown imposed by the state government to contain an outbreak of COVID-19 cases. And with the lack of fans, players were faced with an all-too-familiar feeling: a distinct lack of buzz. The Australian Open was allowed to continue during the lockdown — but without fans. He struggled without a crowd in a warm-up tournament before the Australian Open.

Spain's Rafael Nadal celebrates after defeating United States' Michael Mmoh during their second round match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Feb. 11, 2021. (AP Photo/Rick Rycroft)MELBOURNE – The Latest from the Australian Open (all times local):11:50 p.m.Rafael Nadal shrugged off some heckling from a spectator before beating American qualifier Michael Mmoh 6-1, 6-4, 6-2 in the second round of the Australian Open. The Australian Open is the first major in a year to allow sizeable crowds with the government allowing up to 50% capacity. Ad___11:20 p.m.Fabio Fognini and Salvatore Caruso clearly still hadn’t had enough of their all-Italian second-round duel at the Australian Open even after four hours and five sets. ___9:30 p.m.Fifth-seeded Elina Svitolina beat 16-year-old Coco Gauff 6-4, 6-3 in the second round of the Australian Open.