[3] Michael Venus (NZL) and Jamie Murray (GBR) v Karen Khachanov (RUS) and Giovanni Mpetshi Perricard (FRA)

Michael Venus served first when he and Jamie Murray reunited in Washington to play together for the first time since the French Open, their opponents this time being the twin towers of Karen Khachanov and the even taller Giovanni Mpetshi Perricard.  He aced the young Frenchman, but Khachanov then hit a fabulous forehand return down…