TOKYO(AP) Maria Sharapova won her first tournament since returning from a 10-month injury layoff when Jelena Jankovic retired because of an arm injury in the first set of the Toray Pan Pacific final.

Sharapova was up 5-2 on Saturday at Ariake Colosseum when the seventh-seeded Serb took a timeout to have her right arm examined by the trainer. Jankovic returned to the court and lost the first two points of the eighth game before retiring.

It's disappointing,'' Sharapova said.It's toward the end of the year and there are a lot of injuries so I wish Jelena a speedy recovery.''

It was Sharapova's first win since Amelia Island in April 2008.

Sharapova won her first tournament as a professional at the Japan Open in 2003 and won this tournament in 2005, defeating Lindsay Davenport in the final.