If you’ve ever picked up a tennis racket and attempted to serve against an opponent, you’ll know just how hard a skill it is.

At this year’s Wimbledon, Olivetti’s fastest serve was 140 mph, which remains among the highest in the men’s game.

The secrets behind the world’s fastest tennis serves Mike Hewitt/Getty Images via CNN Newsource Giovanni Mpetshi Perricard produced the biggest serve in Wimbledon history this year.