Naomi Osaka wins U.S. Open final over Serena Williams Osaka won her first Grand Slam title with Saturday's victory.SI Staff|Share on FacebookShare on XAdd us as a preferred sourceNaomi Osaka defeated Serena Williams in the U.S. Open final on Saturday, winning 6-2, 6-4. The win marked Osaka's first Grand Slam title.Add us as a preferred source on GoogleFollowLoading recommendations... Please wait while we load personalized content recommendationsPublished Sep 8, 2018 | Modified Sep 8, 2018SI STAFFShare on FacebookShare on XHome/Tennis