Tennis: Defending champions Sinner, Sabalenka in Cincinnati Open quarters

Defending champions Jannik Sinner and Aryna Sabalenka booked quarter-final berths at the rain-hit ATP-WTA Cincinnati Open on Wednesday (Aug 13) with straight-set wins. Sinner shrugged off a mid-match rain interruption lasting nearly three hours as he advanced with a 6-4, 7-6 (7/4) victory over Adrian Mannarino. He next faces Canada's Felix Auger-Aliassime, who beat Benjamin Bonzi of France 6-4, 6-3.

Sabalenka, taken to three sets in her previous match with Emma Raducanu, defeated Spain's Jessica Bouzas Maneiro 6-1, 7-5, winning a season-leading 50th match of 2025 and reaching her 29th career last-eight at the elite 1000 level. Sabalenka had to work after surrendering a second-set break, but she broke Bouzas Maneiro in the final game to seal the victory.

"The key was to focus and put as much pressure as possible on her serve," Sabalenka said. "I was up a break, made a couple of mistakes and she broke me back.

"I'm glad to win in straight sets - I didn't want to stay for three hours."

World number one Sinner, playing his first tournament since lifting the trophy at Wimbledon, notched his 24th consecutive hardcourt match win to gain his fifth quarter-final of the season.

The victory required patience, with the Italian who turns 24 on Saturday passing some of the afternoon weather pause by playing cards with his team.

Sinner had won the first set and they were on serve in the second when they returned, but Frenchman's tricky game took a toll as Sinner was broken while trying to serve out the match.

The second set instead went to a tiebreak, with the Italian firing his 11th and 12th aces to clinch victory.

"He's a very difficult opponent, different from the other payers," Sinner said. "He can read the opponent well.

"It was a struggle to close it out, but I'm happy to be in the quarter-finals."

Earlier former champion Alexander Zverev polished off a weather-hit third-round victory, winning the final four points of a 6-4, 6-4 win over Brandon Nakashima.

The entire one-game exercise, with 2021 Cincy winner Zverev leading 6-4, 5-4 when play resumed, took less than two minutes, with the third seed set for a later fourth-round encounter against Toronto finalist Karen Khachanov.

Fifth seed Ben Shelton, last week's Toronto winner, reached the fourth round with a 7-6 (7/3), 6-3, victory over Roberto Bautista Agut in a match rescheduled from Tuesday.

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