PARIS -- Defending champion Li Na needed three sets to stop American Christina McHale at the French Open on Saturday.

The seventh-seeded Li, who last year became the first Chinese player to win a Grand Slam singles title, rallied to beat McHale 3-6, 6-2, 6-1.

Li committed 44 unforced errors in the match, 20 more than her unseeded opponent.

The last woman to successfully defend her title at Roland Garros was Justine Henin, who won three straight from 2005-07.