‪Roger Federer and Garbiñe Muguruza both triumph in Miami Open ‬ ‪More:‬ ‪http://tennischannel.com/news/top-stories/federer-triumphs-over-teen-muguruza-advance-in-miami‬

KEY BISCAYNE, Fla. (AP) -- Roger Federer won the old school versus new school match as he defeated teenager Frances Tiafoe at the Miami Open on Saturday. The Swiss, who's playing in Miami for the first time since 2014, defeated the 19-year-old 7-6 (2), 6-