TOKYO -- Rainer Schuettler of Germany won the Japan Open on Sunday and Maria Sharapova of Russia captured the women's title by rallying from a 5-2 deficit in a third-set tiebreaker.

The top-seeded Schuettler beat second-seeded Sebastien Grosjean of France 7-6 (5), 6-2. Sharapova defeated Aniko Kapros of Hungary 2-6, 6-2, 7-6 (5) for her first WTA Tour singles championship.

Sharapova, 16, became the tour's youngest winner this year. A day earlier, she won the doubles title at the $860,000 tournament.

Sharapova, who was seeded fifth, has been compared to countrywoman Anna Kournikova. Now Sharapova has something Kournikova does not -- a title.

"I really hope I'm not going to get all those Anna Kournikova questions anymore," she said.

Sharapova was broken by Kapros in the opening game to set the tone for the set. She regrouped in the second set, breaking three times.

In the third set, Kapros rallied to force a tiebreaker. The Russian fell behind 5-2 but won the next five points, sealing the match when Kapros' return sailed wide.

"Even when I was down, I still felt I would come back and win the match," Sharapova said. "I've worked very hard and now it's all paying off."

Her victory, combined with Anastasia Myskina's victory in the Kremlin Cup in Moscow, marked the first time two Russian women won WTA titles on one day.

Schuettler, ranked No. 8 entering the tournament, didn't lose a set all week. He is trying to qualify for the season-ending Masters Cup in Houston that features the top eight ranked players.

"It's something I've always dreamed of. Making a Grand Slam final (the Australian Open) was a dream, and making the Masters Cup would be another dream come true."

Andy Roddick was supposed to have been the top-seeded man, but the U.S. Open champion withdrew with a leg injury before the tournament.