Result: Alexandr Dolgopolov knocks out Stanislas Wawrinka

Stanislas Wawrinka plays a backhand during his Australian Open quarter-final against Novak Djokovic in Melbourne on January 21, 2014
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Ukraine's Alexandr Dolgopolov knocks Australian Open champion Stanislas Wawrinka out of the Miami Masters in three sets.

Alexandr Dolgopolov has stunned Stanislas Wawrinka to progress to the quarter-finals at the Miami Masters, beating the Australian Open champion 6-4 3-6 6-1.

The Ukrainian needed just a single break to clinch the opener, but the world number three rallied in the second, winning three games in a row to level the match.

Dolgopolov had two chances to break the Swiss in the second, but was unable to capitalise on his opportunities, ensuring that the match went to a deciding set.

However, the 22nd seed raised his game again, securing two early breaks as Wawrinka held serve just once, allowing Dolgopolov to wrap up his second win against a top 10 ranked player this month following his win over Rafael Nadal at Indian Wells.

Dolgopolov faces either Tomas Berdych or John Isner in the last eight.

John Isner returns a shot to Milos Raonic of Canada during the Western & Southern Open on August 15, 2013
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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