Miami, FL, United States (4E Sports) – Two weeks after stunning World No. 1 Rafael Nadal in Indian Wells, Alexandr Dolgopolov recorded another upset, knocking out No. 3 Stanislas Wawrinka, 6-4, 3-6, 6-1, to earn his place in the quarterfinal round of the Sony Open Tennis.
Wawrinka forced a decisive set by reeling off three straight games, but was unable to sustain the momentum. After failing to capitalize on his two break points in the second set, Dolgopolov cashed in on two opportunities in the third to claim his third Top 10 win of the season.
Wawrinka also lost in the Round of 16 two weeks ago at the BNP Paribas Open. Similar to Tuesday’s match, the Swiss had rallied to draw level with South African Kevin Anderson, only to win one game in the third set. It was his first loss of the 2014 season, after he opened his campaign with titles in Chennai and Melbourne.
The 25-year-old Dolgopolov, who has climbed more than 30 spots in the ATP Rankings in just one month, will go for his second ATP World Tour Masters 1000 semifinal when he plays the winner between Czech Tomas Berdych and top American John Isner.
Meanwhile, Kei Nishikori saved four match points in a dramatic deciding set tie-break en route to a 7-6(7), 2-6, 7-6(9) victory over No. 4 David Ferrer.
Nishikori hit 32 winners and converted five of his 13 break point opportunities to beat Ferrer for the first time since the London 2012 Olympics. Ferrer committed 40 unforced errors, 12 fewer than Nishikori.
Nishikori will next meet World No. 5 Roger Federer, who enjoyed a routine 6-1, 6-2 win over Frenchman Richard Gasquet in the Round of 16.
World No. 2 and three-time titlist Novak Djokovic will take on defending champion and No. 6-ranked Andy Murray in the quarterfinal after beating No. 16 Tommy Robredo, 6-3, 7-5, in 83 minutes.
Murray, who won the 2009 and 2013 Miami titles, lost just three of his service points in a 6-4, 6-1 win over No. 11 seed Jo-Wilfried Tsonga in 74 minutes.
On the women’s side, Maria Sharapova rebounded from a slow start en route to a 7-5, 6-1 triumph over No. 8 Petra Kvitova.
Awaiting Sharapova in the semifinals is the winner between No.1 Serena Williams or No.5 Angelique Kerber.