Naomi Osaka smiled before her US Open showdown against Coco Gauff began on Labor Day (Sept. 1) - and after it ended. Between points, Osaka patted her left thigh and quietly told herself, almost in a whisper: "Come on. Come on." Ultimately, that encouragement led her to reach her first major quarterfinal in over four and a half years. RELATED: Naomi Osaka Reacts To Jelena Ostapenko Allegedly Insulting Taylor Townsend After MatchWhat Naomi Osaka Said After Winning Against Coco GauffOnce the ball was in play, Osaka's strokes were loud and on-target.