Ninth seed Daniil Medvedev followed up his semi-final win over Novak Djokovic by beating David Goffin to claim the Cincinnati Masters title.
The Russian was a 7-6 (3), 6-4 winner in one hour 39 minutes and has guaranteed his place in the world’s top five in next week’s new ATP rankings.
Medvedev had already reached finals in Washington and Montreal this summer and booked his place in a third with his remarkable win over world No 1 Djokovic.
Despite fears of fatigue, Medvedev stormed into a 4-1 lead against Goffin before the Belgian broke back to force a tie-break, only to lose it on a double fault.
Medvedev broke Goffin in the first game of the second set and served strongly until he stood one game away from the biggest title of his career.
Facing two break points at 15-40, he responded with a big second serve then three consecutive aces to seal a superb victory and underline his continued emergence.
At the Winston-Salem Open in North Carolina, Tomas Berdych picked up his first win since February as he overcame Andreas Seppi 6-1, 3-6, 6-3.
The former world No 4 needed just an hour and 45 minutes to claim the first-round win as he bids to come back from a recurring back injury.
Robin Haase clinched a straight-sets victory over America’s Denis Kudla, breaking in the very first game on his way to a 6-4, 7-6 (3) triumph, while Marius Copil fired 21 aces to oust Martin Klizan 6-4, 3-6, 6-3.
There were also first-round wins for South Africa’s Lloyd Harris and India’s Prajnesh Gunneswaran.