Alexander Zverev French Open 2021

WATCH: Ugo Humbert hits rocket winner as he upsets Alexander Zverev

World No. 6 Alexander Zverev was stunned in three sets by Ugo Humbert in the second round of the Noventi Open in Halle.

The 22-year-old prevailed 7-6 (7-4), 3-6, 6-3 against the third seed at the ATP 500 grass court tournament.

Zverev is a two-time runner-up in Halle – having lost to Florian Mayer in 2017 and Roger Federer in 2018.

A tight opening set went to a tiebreak after neither player faced a break point. Despite Zverev earning a mini-break on the opening point, Humbert secured three mini-breaks to turn the tiebreak around.

The German hit back by earning an early break in the second set and leveled the match as he extended his run on serve without facing a break point.

World No. 31 Humbert crucially saved a break point to hold for 2-1 in the final set, before converting his only break point of the match in the following game. The Frenchman closed out a big win with three solid service holds.

He will play 20-year-old American Sebastian Korda – who earlier beat Kei Nishikori – in the quarter-finals.

Tim Farthing, Tennishead Editorial Director & Owner, has been a huge tennis fan his whole life. He's a tennis journalist and entrepreneur as well as playing tennis to a national standard. He also helps manage his local club and volunteers for his local tennis organisation. He's a specialist in content about the administration of professional tennis and tennis coaching for all levels.