World number three Roger Federer survived two match points to advance past Croatian Borna Coric into the Italian Open quarter-finals.
After rain wiped out play on Wednesday, Federer played two matches on Thursday.
He came through 2-6, 6-4, 7-6 (9/7) against 13th seed Comic after earlier beating Portugal’s Joao Sousa 6-4, 6-3 in the second round.
Federer will next face eighth-seed Stefanos Tsitsipas, who defeated Italian Fabio Fognini 6-4, 6-3 in an hour and 12 minutes.

Mumbai Indians promote Pollard to head coach, replacing Jayawardene
Leclerc laps fastest for Ferrari in first US GP practice
Bayern coach Kompany hospitalised after collapsing during training session
Alexander Volkanovski's title defence headlines UFC 333 in Abu Dhabi
Juventus fight back to draw with Rennes as Leverkusen go top
