Agnieszka Radwanska swept aside Venus Williams to win the women's singles title at the Rogers Cup in Montreal.
The Pole won 6-4 6-2 in 82 minutes to clinch her 14th WTA title.
"I really had an amazing week," said Radwanska, 25, who defeated Victoria Azarenka and Ekaterina Makarova on her run to the final.
The win gives Radwanska her first tournament victory of 2014 and will be a boost for the world number five ahead of the US Open later this month.
Radwanska took control of the match early on against an erratic Williams, racing into a 4-1 lead and holding her nerve to close out the first set.
And Williams, who defeated her sister Serena in a three-set semi-final on Saturday, was no match for the energetic Pole in a one-sided second set.
Despite the defeat, Williams, who is expected to return to the top 20 in the world rankings, refused to be downbeat about her performance.
"I didn't imagine that I would get to the final," she said. "I fell a little short today, but it's been a wonderful week."
Both players will now compete in this week's Western & Southern Open in Cincinnati.