French Nicolas Mahut returns the ball to British Andy Murray during their first round match of the ABN AMRO World Tennis Tournament in Rotterdam, The Netherlands, 11 February 2015. EPA/KOEN SUYK

Italian Andreas Seppi returns the ball to Dutch Robin Haase during their first round match of the ABN AMRO World Tennis Tournament in Rotterdam, The Netherlands, 11 February 2015. EPA/KOEN SUYK

British Andy Murray returns the ball to French Nicolas Mahut during their first round match of the ABN AMRO World Tennis Tournament in Rotterdam, The Netherlands, 11 February 2015. EPA/KOEN SUYK

Austria’s Dominic Thiem returns the ball to Sergiy Stakhovsky from Ukraine during their first round match of the ABN AMRO World Tennis Tournament in Rotterdam, Netherlands, 11 February 2015. EPA/KOEN SUYK

Canada’s Milos Raonic returns the ball to Russia’s Andrey Kuznetsov during their first round match of the ABN AMRO World Tennis Tournament in Rotterdam, Netherlands, 10 February 2015. EPA/KOEN SUYK

British Andy Murray returns the ball to French Nicolas Mahut during their first round match of the ABN AMRO World Tennis Tournament in Rotterdam, The Netherlands, 11 February 2015. EPA/KOEN SUYK