Carlos Alcaraz survived a bee invasion at Indian Wells on Thursday as he qualified for the semi-finals after beating against Alexander Zverev.
Alcaraz admitted he surprised himself by not losing his focus despite being stung on the forehead.
The match was interrupted by bees when the world number two was on serve in the third game of the match. The Spaniard tried swatting them away with his racket but was forced to find cover after being stung.
Alcaraz, who registered a 6-3 6-1 win to keep his hopes alive of defending the title, said the bees were all over him.
"I saw some bees around but I thought it was just a few of them, just not too many," he told reporters.
"But I saw the sky and there was thousands flying, stuck in my hair, going to me. It was crazy. I tried to stay away from them, but it was impossible."
Play was stopped for an hour and 48 minutes as a beekeeper tried to manage the situation.
"When we stepped on court, there were a few bees in the corner, it was bothering us. We couldn't start playing again. When we decided to warm up a bit to see how it goes, I was hitting some balls and seeing some bees around me," Alcaraz said.
"I couldn't stay focused on the ball, I was focused on the bees and tried to (keep them) away. That's why we stopped a few more times before the match began again.
"After that, we decided to warm up and I saw that the bees weren't around anymore. I tried not think about them anymore.
"It was a really important game for me. I surprised myself that I stayed focus on the match, not on the bees."