Result: Tomas Berdych sees off John Isner challenge

Czech Republic's Tomas Berdych celebrates after victory in his men's singles match against Spain's David Ferrer on day nine at the 2014 Australian Open tennis tournament in Melbourne on January 21, 2014
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Tomas Berdych advances in the Miami Masters thanks to a 6-3 7-5 victory against John Isner.

Tomas Berdych has beaten John Isner in straight sets in their fourth-round match at the Miami Masters.

Both players started strongly, holding serve comfortably. However, Berdych, the seventh seed, was able to break the big-serving American to move into a 4-2 lead.

Despite failing to take two break and set points at 5-2 on Isner's serve, Berdych was able to see out the set 6-3 in the next game.

The second set went with serve up until 5-5, when Berdych got a crucial break. With the win within touching distance, he then dominated what proved to be the final game of the match to confirm a 6-3 7-5 victory.

Stanislas Wawrinka plays a backhand during his Australian Open quarter-final against Novak Djokovic in Melbourne on January 21, 2014
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ATP RankingsPoints
1Scotland flag Andy Murray7,750
2Spain Rafael Nadal7,555
3Switzerland Roger Federer7,145
4Switzerland Stanislas Wawrinka5,780
5Serbia Novak Djokovic5,325
6Croatia Marin Cilic5,155
7Alexander Zverev4,470
8Austria Dominic Thiem4,030
9Japan Kei Nishikori3,285
10Canada Milos Raonic3,230
11Bulgaria Grigor Dimitrov3,070
12France Jo-Wilfried Tsonga2,770
13Belgium David Goffin2,560
14Spain Roberto Bautista Agut2,425
15Czech Republic Tomas Berdych2,390
16United States Jack Sock2,335
17Pablo Carreno Busta2,305
18Lucas Pouille2,220
19United States John Isner2,110
20United States Sam Querrey2,060