Greek tennis star Stefanos Tsitsipas lost an epic 28-point, 22-minute second set tiebreak to Frenchman Ugo Humbert at the Toronto Masters 1000 event on Tuesday.

However, the new world No 3 kept his composure to advance 6-3, 6-7 (13-15), 6-1 at the National Bank Open.

Tsitsipas squandered five match points in the second set but regained his composure in the final set.

It was revenge for Tsitsipas, who has lost to Humbert in both their previous two meetings on the ATP Tour – at the 2021 Olympics and 2020 Paris Masters.

WATCH highlights of the epic tie-break in the video clips below:

Tsitsipas moved into the third round in Toronto, where he will face the winner of 15th seed Aslan Karatsev and Karen Khachanov. Khachanov eliminated Great Britain’s Cameron Norrie 6-4, 5-7, 6-4 on Tuesday to set up an all-Russian affair.

Tsitsipas, a runner up at Roland Garros this year, moved past Rafael Nadal to No 3 of the ATP rankings this week.

Picture: ATP Tour-Twitter