Rogers Cup tennis tournament

Stephens serves to Radwanska at the Rogers Cup tennis tournament in Toronto...Sloane Stephens of the U.S. serves to Agnieszka Radwanska of Poland during their women's tennis match at day four of the Rogers Cup tennis tournament in Toronto, August 8, 2013

Mark Blinch/Reuters

Sloane Stephens, of the US, serves to Agnieszka Radwanska, of Poland, during their women’s tennis match on day four of the Rogers Cup tournament in Toronto