Agnieszka Radwanska needed only 57 minutes to win her opening match, beating Shahar Peer 6-1, 6-1.

The No. 4-seeded Radwanska, last year's Wimbledon runner-up, played for the first time since withdrawing before last week's Brussels tournament with a right shoulder injury.

Playing in sunny, mild weather on Court Suzanne Lenglen, Radwanska committed only eight unforced errors.

Radwanska has won two tournament titles this year but is just 2-2 on clay this spring. She has never advanced beyond the fourth round at Roland Garros.

Her sister, Urszula, beat 30th-seeded Venus Williams in the final match Sunday, 7-6 (5), 6-7 (4), 6-4

No. 15 Roberta Vinci won in less than an hour Monday morning, beating Stephanie Foretz Gacon 6-3, 6-0.

Daily Bagel: Murray in doubt for Queen's Club

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide - from Peter King, Tom Verducci, Lee Jenkins, Seth Davis, and more - delivered straight to you, along with up-to-the-minute news and live scores.