Naomi Osaka, wearing a face mask emblazoned with the name George Floyd, hits balls into the stands after her US Open quarter-final win over Shelby Rogers. AP Photo
Naomi Osaka, wearing a face mask emblazoned with the name George Floyd, hits balls into the stands after her US Open quarter-final win over Shelby Rogers. AP Photo

US Open: Naomi Osaka gains 'revenge' on Shelby Rogers to reach semi-finals