Third seed Agnieszka Radwanska toppled former world number one Venus Williams in straight sets Saturday at the WTA Montreal tournament to clinch her first title of the season.

Poland’s Radwanska rolled to a comfortable 6-4 6-2 victory over the American in just 81 minutes as she claimed her 14th career singles title.

The 25-year-old Radwanska’s last win was in Seoul in September. She reached the final at Indian Wells earlier this year, losing to Italian Flavia Pennetta.

Radwanska fired three aces, had two double faults and won 65 per cent of her first serves in the centre court hardcourt match.

The 2012 Wimbledon runner-up dropped the opening game of the first set, but then ran off four straight games to take control. Williams broke back and drew within 4-3 only to see Radwanska win the set 6-4.

The former world number two then broke Williams to open the second set, but Williams recovered with a break of her own in the fourth game to even the set at 2-2. Radwanska broke back in the fifth game to regain control.

Williams, who beat her sister Serena in the semi-finals, had six double faults and won just 26 per cent of her second serves in the loss.

The 34-year-old American had played three straight three-set matches.

Radwanska improved to 4-5 career against Williams, who was seeking her second title of 2014.