Rafa Nadal tumbles as Federer, Murray and Djokovic hit stride ahead of US Open – in pictures

Feliciano Lopez reacts after beating Rafael Nadal 5-7, 6-4, 7-6 (7/3) on Thursday at the Cincinnati Masters. John Minchillo / AP

Rafael Nadal of Spain congratulates compatriot Feliciano Lopez after their round of 16 match at the Cincinnati Masters on Thursday. Maddie Meyer / Getty Images / AFP

Roger Federer returns a shot to Kevin Anderson in Thursday in his round of 16 straight sets victory at the Cincinnati Masters. Maddie Meyer / Getty Images / AFP

Roger Federer reacts during his victory over Kevin Anderson on Thursday to reach the Cincinnati Masters quater-finals. Maddie Meyer / Getty Images / AFP

Andy Murray serves to Grigor Dimitrov during his round of 16 victory over of his world No 17 challenger on Thursday at the Cincinnati Masters. Rob Carr / Getty Images / AFP

Grigor Dimitrov plays a return shot to Andy Murray on Thursday in their round of 16 match at the Cincinnati Masters. John Minchillo / AP

Andy Murray returns a shot to Grigor Dimitrov during his victory to advance to the Cincinnati Masters quarter-finals on Thursday. Rob Carr / Getty Images / AFP

Novak Djokovic serves to David Goffin on Thursday during his round of 16 victory at the Cincinnati Masters. John Minchillo / AP

Novak Djokovic returns a shot to David Goffin on Thursday at the Cincinnati Masters, where the world No 1 advanced to the quarter-finals with his two sets to one victory. John Minchillo / AP

Images from action at the Cincinnati Masters on Thursday, where Rafael Nadal failed to advance to the quarter-finals in the important US Open warm-up tournament, while Roger Federer breezed by Kevin Anderson, Andy Murray fought off Grigor Dimitrov and Novak Djokovic beat back David Goffin. Click the arrows below to scroll through the photos.

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