Roberto Bautista Agut has pulled off a big upset…

The 32-year-old Spanish professional tennis player knocked out defending champion Daniil Medvedev on Wednesday in the quarterfinals of the Western & Southern Open.

Medvedev failed to close it out in the second set, and Bautista Agut rallied for a 1-6, 6-4, 6-3 victory that eliminated yet another top player from the tuneup tournament for the US Open. Djokovic is the only player left in the tournament with an ATP Masters 1000 title to his credit.

Medvedev led 4-3 in the second before letting it slip away. He converted only five of 20 break points in the match and swatted his racket against the court in frustration at the end.

“Even in the third set I had my chances and didn’t take them,” Medvedev said.

Bautista Agut reached his third ATP Masters semifinal and his first since 2016. He needed a set to adjust to the breezy, cooler conditions on court.

“It’s never easy to come back and play good at first,” he said. “I have to be patient, to try to enjoy every single match I play here after six months without competing. Just pleased and happy to be in the semifinals.”

Medvedev hoisted the champion’s Rookwood Pottery cup last year in Mason, Ohio, where the tournament is held annually. This year’s event was moved to the US Open site in Flushing Meadows because of coronavirus pandemic precautions, creating a two-tournament event without spectators.

He’ll next face World No. 1 Novak Djokovic in the semifinals.