Reilly Opelka beat the veteran tennis player 6-3, 7-6 (9-7) for his fourth ATP Tour title and his maiden Tour title on clay.
With his 6-3, 7-5 victory, the American advances to his third tour-level final of the season, all of which have taken place on American soil.
It will be the sixth time Opelka and Isner meet and the match promises to be a fine encounter of youth against experience.
Korda won his first career ATP Tour singles title at the Emilia-Romagna Open in May, an ATP 250 tournament that was first held in 2021.
He's a counterpuncher who grinds opponents down with heavy topspin and his strongest shot is a heavy topspin forehand, which he uses to move opponents around the court.
Opelka won the 2015 Junior Wimbledon tournament, defeating Junior world No. 1 Taylor Fritz en route to defeating Mikael Ymer in the final.
John Isner is known for two things - his aces and having the longest tennis match in history. Here we take a look at his major rivalries.
John Isner is only the second player in the history of tennis to have reached the 13,000-ace milestone. Read about the tennis racquet he uses here.
John Isner is known for two things - hitting the most aces and having the longest tennis match in history. Here we take a look at this salary, net worth and the like.
John Isner is only the second player in the history of tennis to have reached the 13,000-ace milestone.