World number one Jannik Sinner reached the Cincinnati Open quarter-finals with a 6-4 7-6 (7-4) victory over a stubborn Adrian Mannarino.
Sinner quickly took control of the match when he broke the 37-year-old Frenchman in the third game.
Mannarino, ranked 89th in the world, saved a break point in the seventh game with an ace but the left-hander could not stop his opponent going on to claim the first set.
Play was suspended for rain with Sinner 40-30 on serve and 2-1 down in the second set, before the players resumed about two hours and 45 minutes later.
Mannarino proved a more obdurate competitor in the second set but, despite saving three break points at 5-5, eventually succumbed to the fourth when he netted a backhand to go 6-5 down.
Sinner was 30-0 up when serving for the match but some inspired tennis earned Mannarino his first break point which he took with a stunning forehand return.
However, Sinner produced back-to-back aces to win the tie-break 7-4 and extend his record to four wins in as many matches against Mannarino.
—BBC
