World No 1 Jannik Sinner survived a serving barrage from Jan-Lennard Struff to reach the semifinals of the Halle grass-court tournament on Friday.
Germany's Struff unleashed 18 aces and saved 16 of 18 break points but still went down to a 6-2, 6-7 (1/7), 7-6 (7/3) loss to the Italian.
"It was a very tough match," said Sinner. "I had chances in the second, had chances in the third, but couldn't use them.
"I just try to accept these kind of challenges."
Happy about today. Very tough match, now time to recover for tomorrow 💪🏼 pic.twitter.com/vijm811R19
— Jannik Sinner (@janniksin) June 21, 2024
Sinner will face either China's Zhang Zhizhen or Christopher Eubanks of the United States for a place in the final of the tournament, a key warm-up for Wimbledon which starts on July 1.
Germany's Alexander Zverev edged closer to his first grass-court title with a come-from-behind victory over Arthur Fils in his quarterfinal.
French Open runner-up Zverev, the world No 4, came through 6-7 (5/7), 6-3, 6-4 against his French opponent.
The 27-year-old, a two-time finalist at Halle, becomes the first man since Roger Federer in 2019 to reach back-to-back semifinals at the tournament.
"After the French Open, I was hoping on grass I would play a bit quicker and not play for two-and-a-half, three hours every single match, but I’m continuing what I always do," said Zverev.
Zverev will take on 2022 champion Hubert Hurkacz for a place in the final.
Poland's world No 9 defeated Marcos Giron of the United States 7-6 (7/5), 6-4 on the back of 42 winners, including 11 aces.