Serena Williams of the USA eyes the ball to return a shot to Angelique Kerber of Germany during their tennis match at the WTA championship in Istanbul, Turkey, Tuesday, Oct. 23, 2012.

 

              Serena Williams of the USA eyes the ball to return a shot to Angelique Kerber of Germany  during their tennis match at the WTA championship in Istanbul, Turkey, Tuesday, Oct. 23, 2012.
Serena Williams of the USA eyes the ball to return a shot to Angelique Kerber of Germany during their tennis match at the WTA championship in Istanbul, Turkey, Tuesday, Oct. 23, 2012. (AP Photo)
Tags: Germany , USA