Author: Dan Wolken, USA TODAY

Carlos Alcaraz, 18, who entered the U.S. Open ranked No. 55, introduced himself in a major way Friday by knocking out No. 3 seed Stefanos Tsitsipas.

The USTA says gates won’t open until 11 a.m. and play won’t begin before noon, if then.

Immediately after the bathroom break, Tsitsipas broke Murray’s serve and held on for an eventual 2-6, 7-6 (9-7), 3-6, 6-3, 6-4 win in the first round.

The world’s fourth-ranked tennis player enters the U.S. Open under a cloud of suspicion, and his misleading statements will only amp up the scrutiny.

Serena Williams has pulled out of the U.S. Open, citing the torn hamstring that forced her to retire from her first-round match at Wimbledon.

The Big Ten, Pac 12 and ACC banding together is what needs to be done after the SEC grabbed Texas and Oklahoma. Will the conferences make it work?

The word “retirement” was never spoken by Roger Federer during his 97-second video, but the implication of the news he revealed was clear.

The U.S. women’s basketball team will play for the gold medal for the seventh straight Olympics after it defeated Serbia in the semifinals.

Super heavyweight fighter Richard Torrez Jr. has a chance to become the first American man to win boxing gold since 2004.