Naomi Osaka beats Coco Gauff in Western Southern Open

Second-seeded Naomi Osaka of Japan recorded 11 aces to post a 4-6, 6-3, 6-4 victory over Coco Gauff in a second-round match at the Western Southern Open in Mason, Ohio.

Osaka won 83.7 percent of her first-serve points while prevailing in one hour, 53 minutes at the Cincinnati-area event.

Osaka is looking to have a strong showing this week as she tunes up for the upcoming U.S. Open. She hasn't played much tennis in rece