Holger Rune and Beatriz Haddad Maia triumphed in marathon French Open epics which took almost eight hours to complete on Monday while Iga Swiatek required just 31 minutes to move into the quarter-finals.
World number six Rune reached a second successive quarter-final in Paris with his first ever five-set win.
Rune was jeered by the Court Philippe Chatrier crowd for hitting the ball on a double bounce in the fourth game of the third set.
His 23rd seeded Argentine opponent stopped playing, expecting the umpire to call the point for him.
Play continued and Cerundolo, who was called for hindrance when he halted, dropped serve.
“This is sports,” Rune said after the match.
“When I was hitting the ball, I just ran for it. But then obviously when I saw it, after he did call it, I saw it after the next point on the TV, and I saw it was a double bounce.
“But the point already happened and he called the score.
“So I felt sorry. Sorry for him. But this is tennis. This is sports. Some umpires, they make mistakes. Some for me; some for him. That’s life.”
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