Red-hot Roger Federer and John Isner to face off in The Match For Africa 4: Seattle tomorrow Watch it LIVE on Tennis Channel at 6 PM PT and on Tennis.com at 5:30 PM PT here: http://www.tennis.com/pro-game/2017/04/roger-federer-john-isner-live-match-africa-4-seattle-bill-gates/65704/

SEATTLE, U.S. -- For those who are pining for a Roger Federer match, you're in luck as you don't have to wait till Roland Garros to see him in action. The 18-time Grand Slam champ will take on John Isner on Saturday in the Match for Africa 4: Seattle, the