Spain’s Rafael Nadal in action during the semi-final match against Andreas Seppi of Italy at the ATP Tennis Tournament in Hamburg, Germany, 1 August 2015. EPA/Daniel Reinhardt

Spain’s Rafael Nadal celebrates his win in the semi-final match against Andreas Seppi of Italy at the ATP Tennis Tournament in Hamburg, Germany, 1 August 2015. EPA/Daniel Reinhardt

Rafael Nadal of Spain returns the ball to Jiri Vesely of the Czech Republic during their second round match at the ATP tennis tournament in Hamburg, Germany, 30 July 2015. EPA/DANIEL BOCKWOLDT

Spain’s Rafael Nadal in action during the semi-final match against Andreas Seppi of Italy at the ATP Tennis Tournament in Hamburg, Germany, 1 August 2015. EPA/Daniel Reinhardt

Rafael Nadal of Spain in action against Pablo Cuevas of Uruguay during their quarter final match at the ATP Tennis Tournament in Hamburg, Germany, 31 July 2015. EPA/DANIEL BOCKWOLDT