DOHA, Qatar (AP) - Defending champion Roger Federer pulled out of his semifinal match against Jo-Wilfried Tsonga at the Qatar Open because of a back injury on Friday.
NBCSports.com: Sports, NBC News: Sports
Fri, 01/06/2012 - 6:06am
DOHA, Qatar (AP) - Defending champion Roger Federer pulled out of his semifinal match against Jo-Wilfried Tsonga at the Qatar Open because of a back injury on Friday.