The best tennis player in the world is no match for Jimmy Butler — the NBA superstar proved he’s got serious skills on more courts than just the hardwood … by scoring a point off Carlos Alcaraz during a U.S. Open charity event!!

The Miami Heat hooper was serving as an honorary ball boy for the Spanish star’s contest against Frances Tiafoe at the Stars of the Open at Louis Armstrong Stadium on Wednesday … when all of a sudden, he decided to step in and show off his tennis game.

Okay, so Butler might not be the next Federer … but he certainly held his own as he rallied with the No. 1-ranked Alcaraz, who was obviously taking it easy on the six-time All-Star.

At one point, Butler asked Alcaraz to hit him with a fast serve so he could prove he could successfully return … but didn’t get his wish, as his opponent put in about 5% power on his attempt.

But, it was Jimmy Buckets who got the crowd roaring by the end of the point … sneaking a shot past Alcaraz to come out on top!!

They don’t call him Himmy Butler for nothing.