Qualifier Buse Upsets Humbert in Hamburg Quarterfinal to Reach Semifinals

Qualifier Ignacio Buse defeated top seed Ugo Humbert 6-3, 5-7, 6-3 in the Hamburg European Open quarterfinal on May 21, 2026, advancing to the semifinals. The match was played on the red clay of Hamburg's Rothenbaum Tennis Center.

Buse, ranked 57th in the world, entered the tournament as a qualifier and had to win three matches just to reach the main draw. His upset victory over Humbert, the tournament's top seed, marked the biggest win of the 22-year-old Peruvian's career on the ATP Tour level.

The quarterfinal featured tight baseline exchanges and tactical serving. Buse broke Humbert early in the first set, then saved a break point to close it out 6-3. Humbert rallied to take the second set 7-5 behind his first-serve percentage, but Buse regained control in the decider, breaking twice to seal the match.

The Hamburg European Open is an ATP 500 event, part of the clay-court swing leading into the French Open. With the win, Buse earned 180 ATP ranking points and a spot in the semifinal round against another qualifier or seeded opponent.

Buse's semifinal match is scheduled for May 22 or 23, depending on the tournament's order of play. A win would put him into his first ATP final and continue his breakthrough run on clay.