Kiki Bertens dropped only three games as she cruised to her first Premier-level trophy at the Volvo Car Open.
It was the second match of the day for the 26-year-old having seen off Madison Keys in a marathon two-hour 45-minute semi-final match 6-4 7-6 (7/2) 7-6 (7/5) hours earlier.
Fellow finalist Julia Goerges made lighter work of her semi-final beating Anastasija Sevastova 7-6 (7/5) 6-3 with that match also taking place on Sunday after rain washed out the previous day’s play in Charleston.
Bertens, world number 27, tied up the first set in 32 minutes after breaking her German opponent’s first two service games before a third break to make it 6-2.
The second set continued where the first left off, Bertens breaking Goerges’s first two service games as she raced to a 5-0 lead.
The sixth game saw Goerges save two match points – and the bagel – before the 26-year-old served out the final game to love for a 6-2 6-1 win.
Garbine Muguruza came back from a set down against Timea Babos to win the Monterrey Open 3-6 6-4 6-3.
The tournament’s top seed took a while to get into her rhythm – her first service game lasted 15 points where she was forced to save two break points – and she dropped her third service game.
The Hungarian, ranked 44th in the world, capitalised and took the first set in 48 minutes.
Muguruza lost her first service game to love in the second, but broke back for 2-2 and then took the set with another break at 5-4.
In the deciding set, the world number three broke her opponent for a 4-2 lead and served out the match in two hours, 22 minutes.