Miami Open: Roger Federer, Kevin Anderson advance to fourth round

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But momentum swung in the fourth-seeded Federer's direction when he blasted a cross-court forehand victor to break Krajinovic's serve to take the closely fought first set.

Roger Federer continued his quest for a fourth Miami Open crown after reaching the last 16, but Grigor Dimitrov crashed out.

Roger Federer admits he faces a real battle to land the 101st title of his career with the in-form Daniil Medvedev next up after Serbian Filip Krajinovic was dispatched 7-5 6-3 on Monday at the ATP and WTA Miami Open.

After two semi-surprise wins over Sam Querrey and Alexander Zverev, David Ferrer couldn't keep his Miami farewell going against Frances Tiafoe, but he fought hard is a tough 5-7, 6-3, 6-3 loss to the American. And this year, I didn't want to have three months off and I was excited to play the clay season again.

Federer missed a break point opportunity at 4-3, Albot then crashing home a victor to heap the pressure back onto the 37-year-old before brilliantly sealing the first set.

However, Albot could not convert a break point in the deciding set tied a 3-3, and the Swiss took command from there to wrap up a match that lasted two hours and 10 minutes.

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Three-times Miami champion Federer finished with 38 winners but had to overcome 41 unforced errors to defeat Albot.

Another big server, Anderson had 13 aces of his own with just one double-fault to seal a 6-4 7-6 (6) victory over Portuguese Sousa earlier in the day. The Australian will meet 2018 Wimbledon finalist Kevin Anderson next. "I feel like I'm hitting the ball great", the sixth seed added.

Czech Kvitova, whose knife-wielding attacker in 2016 - 33-year-old Radim Zondra - was sentenced to eight years in prison yesterday, will play Australian Ashleigh Barty today after beating France's Caroline Garcia 6-3, 6-3.

Eighth seed Stefanos Tsitsipas beat Mackenzie McDonald 7-6 (4) 6-1.

The 27-year-old Halep has now won her last four meetings against Williams and, after her 6-3, 6-3 victory, she declared she was "really happy with her game".