Naomi Osaka smacked her racket against Arthur Ashe Stadium's court. Soon enough, Osaka's title defense at the U.S. Open was over in the third round with a 5-7, 6-7, 6-4 loss Friday night to Leylah Fernandez, an 18-year-old from Canada who is ranked 73rd and never had been this far in Grand Slam competition. But this was Osaka's first Slam …
