The world number three suffered more than expected in the first set, but the second was very good initiative and was completed by imposing 7-5, 6-4 and now awaits the clash between the rival Albacete Guillermo Garcia-Lopez and Gael Monfils.
The Spanish Rafael Nadal met forecasts and joined Nicolas Almagro in the quarterfinals of the Mutua Madrilena Madrid Open, 1000 Masters fifth of the season, beating American John Isner in two rounds.

The world number three suffered more than expected in the first set, but the second was very good initiative and was completed by imposing 7-5, 6-4.
The Spaniard took him into the game, mainly due to the powerful pull of his rival who managed to connect 11 aces. However, the quality of his tennis and his powerful right were gradually undermining the confidence of the finalist in Belgrade.
Thus, Nadal took the ball only break he had in the mourning for awarded the first set after discussion with a 6-5 lead which proved decisive. In the second set, the Spaniard decided to do his homework first. More aggressive, Isner was moving across the track to try to surprise you.
He did not need just another breaking ball in the third game (2-1), to dictate the fate of the crash. With this income was enough to ensure his presence in the top eight of the event but is yet to make the game that dazzled last month in Monte Carlo.
Monfils beats Garcia-Lopez and Nadal in the quarterfinals appointment
Gael Monfils Spanish victory prevented the third day in the singles and qualified for the quarterfinals of the Mutua Madrilena Madrid Open, 1000 Masters fifth of the season, beating a hard-fought encounter at manchego Guillermo García López
The Gallic capital twelfth tournament favorite, struggled to subdue the two La Roda sleeves (7-6 (5), 6-4) in just over two hours of competition. The first set went off without contingency from the services, but its subsequent resolution in the tie-break benefited the Parisian Albacete after several mistakes.
In the second, Monfils a break for early bird "the only option that was signed by the twelve-ordered it served to tip the scales in your favor. Thus, the French star tomorrow against Rafael Nadal in the quarterfinals as an advance Davis Cup tie the two countries played in Clermont-Ferrand next July.