American Reilly Opelka saved four break points in the final set before beating defending champion Daniil Medvedev 2-6, 5-7, 4-6 to reach the quarter-finals of the St Petersburg Open.
Medvedev has lost four of his last five matches, including the US Open semifinal against Dominic Thiem and he lost his his way in this match as Opelka broke service twice in the second set to clinch the match.
Opelka faces a quarterfinal against No. 7 seed Borna Coric, who beat wild-card Roman Safiullin 6-3, 7-5 after coming back from 3-1 down in the second set.
Denis Shapovalov had little trouble beating Belarusian qualifier Ilya Ivashka 6-1, 6-4 and Andrey Rublev came back from a set down to win 4-6, 6-4, 7-5 against Ugo Humbert. Brit Can Norrie is up next.
Karen Khachanov won an all-Russian match with Aslan Karatsev 4-6, 7-5, 6-3 and Milos Raonic beat Alexander Bublik 6-3, 6-2.
American outsider Ann Li produced the upset of her life on Wednesday, taking 10 match points…
Alexander Zverev will claim world year-end No. 1 honours for the first time on the…
John McEnroe has used a trip to Spain to come down hard on modern player…
Carlos Alcaraz will headline the field as the Australian Open stages its 1-Point Slam for…
Novak Djokovic is wisely choosing not to tempt fate, with the China Open winner withdrawing…
Novak Djokovic retained his magic touch at the China Open, winning his seventh title without…