Stefanos Tsitsipas was again made to work hard for victory, the Greek fourth seed overcoming Czech qualifier Zdenek Kolar 6-3 7-6(8) 6-7(3) 7-6(7) in a marathon match on Thursday to move into the French Open third round. Two days after the 23-year-old Tsitsipas came from two sets down to beat Italian Lorenzo Musetti at the claycourt Grand Slam, there was another nail-biter for the 2021 finalist. The match appeared headed for a deciding set when Tsitsipas found himself down four set points in the tiebreaker but the Greek found a way to save them all before converting his second match point after four hours and six minutes.