PARIS — Novak Djokovic extended his perfect season into the French Open, beating Thiemo de Bakker 6-2, 6-1, 6-3 Monday in the first round.

PARIS — Novak Djokovic extended his perfect season into the French Open, beating Thiemo de Bakker 6-2, 6-1, 6-3 Monday in the first round.

The second-seeded Serb improved his 2011 record to 38-0 — and stretched his winning streak to 40 — on the second day of the tournament at Roland Garros. And he barely had to sweat doing it, breaking his Dutch opponent six times.

"I was serving really, really well and being very aggressive, using every opportunity to step into the court," Djokovic said. "I was quite in control of the match."

Roger Federer, meanwhile, joined Djokovic in the second round by beating Feliciano Lopez of Spain 6-3, 6-4, 7-6 (3), but sixth-seeded Tomas Berdych was knocked out by French journeyman Stephane Robert in five sets.

In women's, No. 1 Caroline Wozniacki ousted 40-year-old Kimiko Date-Krumm 6-0, 6-2.