Roger Federer saved two match points against Borna Coric to advance to the quarterfinals of the Internazionali BNL d'Italia in Rome.
Djokovic, Nadal and Federer played two matches Thursday after play was backed up because of rain on Wednesday.
Federer beat Joao Sousa 6-4, 6-3 in the Round of 32, then dropped the first set against Coric before rallying to win 2-6, 6-4, 7-6 (7).
Coric served for the win at 6-4 in the tiebreaker but lost the point when he hit a forehand into the net. Federer's service winner knotted the tiebreaker, and he sealed the victory when Coric couldn't handle a backhand volley.
"The first set was really difficult, for me at least," Federer said. "I really struggled to see the ball. There was a lot of shade on the court ... and he did well, he's a very steady player. I couldn't chase the lines very well, so I couldn't hit any winners, but I really tried to play in a way where I was not going to just lose it.
"I gave him a chance to win, and he didn't, so I took it at the end."
Federer will next play eighth-seeded Stefanos Tsitsipas.
