Nadal secures key break to see off Fish

Defending champion Rafael Nadal breaks Mardy Fish in the fourth set before going on to secure a 6-3 6-3 5-7 6-4 victory in the quarter-finals at Wimbledon.

The Spaniard did not have it all his own way against the American, but did enough to extend his unbeaten run at the All England Club to 19 matches.

Nadal will now meet British number one Andy Murray in Friday's semi-final after the Scot beat Feliciano Lopez in straight sets.

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