World No 1 Serena Williams thrashed Sorana Cirstea 6-2 6-0 in the final of the WTA event in Toronto to claim her eighth title of the year.
Romanian Cirstea had caused a string of upsets to become a surprise finalist but never looked like causing another, Williams romping to victory in just 61 minutes.
In two previous meetings Cirstea had never managed to even take more than two games off Williams in a set and she began nervously here, double-faulting on the first point and then again to hand the American a break in game one.
She fought hard to avoid being broken again in game three, playing her best rally of the match as she saved two break points, but Wiliams eventually broke at the third opportunity.
However, Cirstea then emerged energised from an-court discussion with coach Darren Cahill and broke to love, before holding her own serve to make it 2-3.
But, just when a good match looked in prospect, Williams took charge again, reeling off nine games in a row as she claimed career title number 54, and her third in Canada.
Cirstea managed to save one match point but put a forehand wide on the second to end her brilliant week on something of a low note.
"I know she's so capable of winning big matches," Williams said. "And she's had so many big upsets this week. I didn't want to be another casualty."