Guillermo Garcia-Lopez of Spain in action against Stanislas Wawrinka of Switzerland during their second round match of the ABN AMRO World Tennis Tournament in Rotterdam, Netherlands, 12 February 2015. EPA/KOEN SUYK

Stanislas Wawrinka of Switzerland in action against Guillermo Garcia-Lopez of Spain during their second round match of the ABN AMRO World Tennis Tournament in Rotterdam, Netherlands, 12 February 2015. EPA/KOEN SUYK

British Andy Murray in action against Vasek Pospisil of Canada during their second round match of the ABN AMRO World Tennis Tournament in Rotterdam, Netherlands, 12 February 2015. EPA/KOEN SUYK

Milos Raonic of Canada in action against Simone Bolelli of Italy during their second round match of the ABN AMRO World Tennis Tournament in Rotterdam, Netherlands, 12 February 2015. EPA/KOEN SUYK

Gael Monfils of France in action against Tomas Berdych of the Czech Republic during their quarter final match of the ABN AMRO World Tennis Tournament in Rotterdam, Netherlands, 13 February 2015. EPA/KOEN SUYK

Dutch Robin Haase (L) with his doubles partner, German Andre Begemann (R), against the Spaniards Marcel Granollers and Marc Lopez during the quarter final match of the ABN AMRO tennis tournament in Rotterdam, Netherlands, 13 February 2015. EPA/KOEN SUYK

Vasek Pospisil of Canada in action against British Andy Murray during their second round match of the ABN AMRO World Tennis Tournament in Rotterdam, Netherlands, 12 February 2015. EPA/KOEN SUYK