Stefanos Tsitsipas comeback sets up quarter vs. Carlos Alcaraz - ESPN

Stefanos Tsitsipas lost the opening set but went on to defeat Matteo Arnaldi 3-6, 7-6 (4), 6-2, 6-2 in the fourth round of the French Open on Sunday.

Tsitsipas, the No. 9 seed, kept his bid to win his first Grand Slam title alive but will face another challenge in the quarterfinals against No. 3 Carlos Alcaraz, who thrashed No. 21 Felix Auger-Aliassime 6-3, 6-3, 6-1.

«It was one of the craziest comebacks I've had. The momentum seemed to be going his way the entire match,» Tsitsipas said. «It was very frustrating on my end, because I felt like I was trying my best, trying to make him move. Nothing really seemed like it was working.»

A finalist at Roland Garros in 2021, Tsitsipas was put to the test early on by Arnaldi, who ousted No. 6 Andrey Rublev in the previous round. Arnaldi had to save three break points in the opening game but made the decisive break to lead 3-1 and comfortably saw out the first set, as Tsitsipas was unable to handle the Italian player's energy.

Tsitsipas looked to be in even more trouble in the second set when Arnaldi broke to lead 3-2. But Arnaldi then failed to take advantage when serving for the set at 5-4 up. Tsitsipas broke and came out on top in the tiebreak to level the match.

«I think experience was the reason I managed to come back today. Even at 5-3 in the second set I felt like I can come back,» Tsitsipas said. «I felt like there was power within me to turn this match around, and I think that game at 5-4 when I broke him was the biggest pleasure I've experienced in tennis in a long time because I felt there is a chance.»

Tsitsipas took his renewed confidence into the third set and broke in the first game. Arnaldi began to struggle and Tsitsipas broke once more, and two further breaks in