@thisisbillgates puts his undefeated #MatchForAfrica streak on the line with @rogerfederer when they take on @jack.sock and @savannahguthrie tonight in San Jose. Drop a 📺 in the comments if you’ll be watching live starting at 10:30pm ET on the @tennischannel! 📸: @rogerfederer #usta #jacksock #savannahguthrie #billgates #rogerfederer #federer #tennis #instatennis #instasports