Poland's Hubert Hurkacz is putting his money behind his serve at Wimbledon.
The seventh-seeded Hurkacz said Sunday he will donate 100 euros -- about $105 -- for each ace he hits during the Wimbledon fortnight for the people of Ukraine.
"Hope my serve works well! acesforaid," he tweeted, in part.
Hurkacz, 25, opens play at the All England Club in London on Monday against Spain's Alejandro Davidovich Fokina. He reached the semifinals last year.
Ranked No. 10 in the world, he is 28-11 in matches this year but 5-1 on Wimbledon's surface, grass. He has 452 aces through those 39 matches this year.
--Field Level Media