Ons Jabeur retired injured in the Sydney Tennis Classic quarterfinals and allowed Anett Kontaveit to reach the semifinals.

Full-throated shouts and hearty applause have returned to the U.S. Open tennis tournament.

American Danielle Collins captured her second career title in just a two-week span, holding off No. 4 seed Daria Kasatkina of Russia 6-3, 6-7 (10), 6-1 after a thrilling second-set tiebreaker to win the Mubadala Silicon Valley Classic.

Stefanos Tsitsipas of Greece returns to Damir Dzumhur of Bosnia during the Miami Open tennis tournament, Saturday, March 27, 2021, in Miami Gardens, Fla. (AP Photo/Marta Lavandier)MIAMI – For tennis up-and-comers like Stefanos Tsitsipas, the draw at the Miami Open began to look a lot less daunting even before the tournament began. “It’s a first test to see how it is playing without them,” Tsitsipas said after his third-round victory Saturday. 2-seeded Tsitsipas is among those with the best chance to take advantage, and he looked the part against Damir Dzumhur, winning 6-1, 6-4. “I created a lot of opportunities with my serve — I wasn’t rushing at all, finding the right angles and executing it perfectly,” Tsitsipas said. In women's play, top-ranked Ash Barty and three-time champion Victoria Azarenka advanced to a round of 16 showdown.