Rafael Nadal has lost 6-4, 6-4 to Botic van de Zandschulp in the Davis Cup in what may have been the last match of his career.

Top-ranked Carlos Alcaraz has beaten Kwon Soon-woo in straight sets in the Davis Cup Finals to secure Spain victory over Korea and a spot in the quarterfinals as Group B winner.

Ash Barty has ended a 42-year drought by reaching the Australian Open final with a 6-1, 6-3 win over Madison Keys.

Ash Barty ended a long drought by reaching the Australian Open final with a 6-1, 6-3 win over unseeded Madison Keys.

___7:10 p.m.Serena Williams began her latest attempt to win a 24th Grand Slam singles trophy by beating Kristie Ahn in the first round at the U.S. Open. 3 and hoping to tie Margaret Court's record of 24 Grand Slam singles titles. Pella reached the third round of the U.S. Open in 2018 and the third round of the Australian Open earlier this year. She is a seven-time Grand Slam quarterfinalist, including at the U.S. Open in 2013 and 2018. He's the first unranked player to win a Grand Slam match since Nicolas Kiefer at Wimbledon in 2007.

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.