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Watch: Federer moves on at the Miami Open

This one did not come easily, but Roger Federer overcame his serving woes to upend Roberto Bautista Agut in a pair of tiebreakers at the Miami Open. Earlier, Rafael Nadal won. (Action continues on ESPN3 & the ESPN App.)

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Venus Williams beat Svetlana Kuznetsova and top-seeded Angelique Kerber defeated Risa Ozaki to advance into the quarterfinals at the Miami Open.

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EPA, Reuters
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Roger Federer and Rafael Nadal revived their rivalry in the Australian Open final, and meet again in the last 16 at Indian Wells. Check out their top 5 tussles.

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A Swiss split in Miami Open Round of 16 Federer d Bautista Agut 7-6(5) 7-6(4) A. Zverev d Wawrinka 4-6 6-2 6-1

Matt Wilansky ESPN.com 

Roger Federer has converted only 53 percent of his first serves so far against Roberto Bautista Agut at the Miami Open, which explains why he's in a dogfight. The good news is that Fed has won 18 of 19 points when he has made his first serve.

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Nadal beats Mahut in straight sets to reach Miami Open quarterfinals. Up next on WatchESPN Federer faces Bautista Agut.

Peter Bodo Tennis 

Neither Roger Federer nor Rafael Nadal can go to the beach today on Key Biscayne, they both have matches at the Miami Open. So they bought the beach to the tournament.

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The entire men's Round of 16 and first two women's quarterfinals at the Miami Open coming up at 11 am ET on WatchESPN.