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.

Dalic named UAE coach after leaving Croatia
Messi doubts playing 'for much longer' after father's death
Italy's Curtis takes 50m backstroke world record
Rybakina fights back to beat Osaka at Canadian Open
Egypt's Trezeguet joins Saudi side Al-Riyadh on free transfer
