epa03602767 Tomas Berdych of the Czech Republic returns the ball to Tobias Kamke from Germany during their second round match of the Dubai Duty Free Tennis ATP Championships in Dubai, United Arab Emirates, 27 February 2013. EPA/ALI HAIDER *** Local Caption *** 03602767.jpg
Tobias Kamke shows his frustration during his second round match against Tomas Berdych. Ali Haider/EPA
Somdev Devvarman plays a shot at the Aviation Club. Ali Haider/EPA
Juan Martin Del Potro returns the ball to Somdev Devvarman during their second round match of the Dubai Duty Free Tennis Championships. Ali Haider/EPA
Dubai sporting ambassador Diego Maradona takes to the court after watching Juan Martin Del Potro's match with Somdev Devvarman. Ali Haider/EPA
epa03603089 Roger Federer of Switzerland returns the ball to Spain's Marcel Granollers during the third round of the Dubai Duty Free Tennis ATP Championships in Dubai, United Arab Emirates, 27 February 2013. EPA/ALI HAIDER *** Local Caption *** 03603089.jpg
Marcel Granollers in action against Roger Federer. Ali Haider/EPA
Roger Federer's wife Mirka watches on in Dubai. Ali Haider/EPA
Novak Djokovic in action against Roberto Bautista Agut. Ali Haider/EPA
Marcel Granollers reacts after hitting a return to Roger Federer. Ahmed Jadallah/Reuters
Somdev Devvarman hits a return to Juan Martin Del Potro. Mohammed Salem/Reuters
TENNIS-MEN/DUBAI
Tobias Kamke reacts after injuring his leg during his men's singles match against Tomas Berdych. Mohammed Salem/Reuters
Roger Federer serves to Marcel Granollers. Jumana El Heloueh/Reuters