Before play gets underway, Mike McCready...

Before play gets underway, Mike McCready performs the national anthem! Are you watching? Tune in now here: http://www.tennis.com/pro-game/2017/04/roger-federer-john-isner-live-match-africa-4-seattle-bill-gates/65704/

Original author: Tennis Channel
Drumroll please.... Roger Federer and John...
Head over to Tennis.com now to watch The...

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