The Nike ad for the upcoming World Cup is getting plenty of buzz around the net. But there have been few mentions of Roger Federer‘s cameo in the 3-plus minute shot. Fed battles in ping pong against England’s Wayne Rooney, who is apparently (in the ad) on a red-hot streak (Just Roo It!). No Rafa appearance?! Even Kobe takes part in the action. See the clip by clicking the image above.