Russia's Daniil Medvedev and American Madison Keys recorded straight-set victories to win the men's and women's Cincinnati Masters titles in Ohio.
Medvedev, who defeated world number one Novak Djokovic in the semi-final, beat Belgium's David Goffin 7-6 (7-3) 6-4 to win his first ATP Masters 1,000 title.
Victory means the 23-year-old will become world number five on Monday.
Keys, 24, beat two-time Grand Slam winner Svetlana Kuznetsova 7-5 7-6 (7-5) to win a second title of the season.
The win will see Keys - ranked 18th - return to the world top 10.
In her first hard court final since finishing as runner-up at the 2017 US Open, the American twice recovered from 5-3 down to take the victory.
Meanwhile, eighth-ranked Medvedev held his nerve in the first set tie-break and broke serve immediately in the second before seeing out the win in one hour 41 minutes.