Tobias Kamke of Germany returns the ball to Matteo Viola of Italy during the Qatar ATP Open Tennis tournament in Doha, Qatar, Monday, Dec. 31, 2012. (AP Photo/Osama Faisal)

 

              Tobias Kamke of Germany returns the ball to Matteo Viola of Italy during the Qatar ATP Open Tennis tournament in Doha, Qatar, Monday, Dec. 31, 2012. (AP Photo/Osama Faisal)
Tobias Kamke of Germany returns the ball to Matteo Viola of Italy during the Qatar ATP Open Tennis tournament in Doha, Qatar, Monday, Dec. 31, 2012. (AP Photo/Osama Faisal)