Carlos Alcaraz looked back at his best as he swatted aside a swarm of bees and world No. 6 Alexander Zverev to reach the semifinals at Indian Wells on Thursday, setting up a clash with the in-form Jannik Sinner.
The world No. 2 took the interruption to clear the bees from the court in his stride before racing past Zverev 6-3, 6-1 in little more than 90 minutes to keep his title defence on track.
Zverev did not play badly but Alcaraz's all-court game was just too good, the 20-year-old Spaniard sealing the victory by breaking the German for the fourth time and taking his winning streak in the Californian desert to 10 matches.
"It was strange, I've never seen something like that at a tennis match," twice major champion Alcaraz said of the invasion of bees, during which he was stung on the forehead before heading for cover.
"I'm not going to lie, I'm a little bit afraid of the bees. Once the match started again, I managed to stay away from the bees and do the things I needed to do."
Italian Sinner earlier continued his perfect start to the season by cruising past Jiri Lehecka 6-3, 6-3 to improve his win-loss record this year to 16-0.
A windy, cool day did little to slow down the hottest player on the men's tour as Sinner was in control throughout, facing a single break chance the entire contest while his opponent piled up unforced errors.
Lehecka reached his first Masters 1000 quarterfinal with upset wins over fifth seed Andrey Rublev and 11th seed Stefanos Tsitsipas but had no answers for the lanky Australian Open champion.
The third seed quickly had his Czech opponent under pressure by collecting the first break in the third game with a massive forehand winner before closing out the set with a second break.
It was much the same business-like approach in the second as Sinner again claimed the early break to get 3-1 ahead and he held serve on the way to a 19th straight win including three from the end of last season.
Local hope Tommy Paul also reached the semifinals with a 6-2, 1-6, 6-3 win over Casper Ruud and will take on Australian Open runner-up Daniil Medvedev, who powered past Holger Rune 7-5, 6-4 to stay on course for his first title of the year.
Medvedev claimed a high-quality opening set and came from a break down in a tense second, during which he was struck on the body by a Rune backhand on the first point, before wearing down the young Dane for the victory.
Third seed Coco Gauff served up 17 double faults but still managed to beat China's Yuan Yue 6-4, 6-3 to reach the women's semifinals in the Californian desert for the first time.
A day after her 20th birthday, Gauff had to rally from 3-1 down in the second set before setting up a clash with ninth seed Maria Sakkari, who ended American Emma Navarro's run with a 5-7, 6-2, 6-4 victory.
Gauff joined Iga Swiatek and Caroline Wozniacki as the only players to have reached five WTA 1000 semifinals before the age of 21.
Top seed Swiatek earlier also reached the semifinals after former world No. 1 Wozniacki retired with a foot injury early in the second set of their quarterfinal.
Wozniacki started strongly as she raced into a 4-1 lead but she was soon left frustrated as Swiatek produced a barrage of winners to storm back and win the set 6-4.
The Dane, who returned to the circuit last year after taking a three-year break to start a family, had a medical timeout to have her right foot re-strapped at the end of the first set.
That failed to improve the situation, however, and she gestured to her opponent that she was unable to continue once Swiatek had taken a 1-0 lead in the second.
Swiatek, the 2022 champion, will face Marta Kostyuk in the semifinals after the Ukrainian defeated Anastasia Potapova 6-0, 7-5.