Maria Sharapova sealed her first title since her lengthy injury lay-off after Jelena Jankovic retired in the final of the Pan Pacific Open in Tokyo.

The 22-year-old Russian was leading 5-2 in the first set when Serbian seventh seed Jankovic was forced to withdraw with a recurrence of a shoulder injury.

It handed Sharapova, who only returned to action in May, her first tournament win since Amelia Island in April 2008.

"It was my second final of the year, so I was a bit nervous," Sharapov...