US Open

Rafael Nadal gave further evidence that he is playing his best ever tennis in New York as he beat Feliciano Lopez to reach the US Open quarter-finals.

The world number one came through 6-3 6-4 6-4 in the night match on Arthur Ashe Stadium to set up a clash with another Spaniard, Fernando Verdasco.

There was greater drama elsewhere as both Verdasco and Stanislas Wawrinka won enthralling five-set matches.

Wawrinka's victory took him through to a quarter-final with Mikhail Youzhny.