Federer, Wawrinka advance in Miami

MIAMI, Florida: Roger Federer survived a brave challenge from American qualifier Frances Tiafoe before emerging with a 7-6 (7/2) 6-3 victory as he got his Miami Open title bid underway on Saturday.

Tiafoe, ranked 101st in the world, struggled against Federer’s serve but was strong on his own and forced a first set tie-break in which the Swiss came out on top.

The 19-year-old son of immigrants from Sierra Leone then broke Federer’s serve in the first game of the second set only for the 18-time Grand Slam winner to break back twice and run out a comfortable winner in the end.

Reigning US Open champion Stan Wawrinka got off to a solid start, beating Argentina’s Horacio Zeballos 6-3, 6-4 at Crandon Park.

Wawrinka will face Malek Jaziri next after the Tunisian beat Feliciano Lopez 6-3, 4-6, 6-3.

Australia’s Nick Kyrgios also progressed on Saturday enjoying a 6-4 6-3 win over Bosnian Damir Dzumhur.

Meanwhile, fifth seed Agnieszka Radwanska had her bid to repeat her 2012 success at the Miami Open ended by Croatian veteran Mirjana Lucic-Baroni.