Radek Stepanek of the Czech Republic returns a shot to Tatsuma Ito of Japan during their quarterfinal of Davis Cup World Group tennis at Ariake Colosseum in Tokyo, Friday, April 4, 2014. (AP Photo/Shizuo Kambayashi)
Lucie Safarova, of Czech Republic, returns to Samantha Stosur, of Australia, during their match at the Family Circle Cup tennis tournament in Charleston, S.C., Thursday, April 3, 2014. (AP Photo/Mic Smith)
Samantha Stosur, of Australia, reacts following a point during a match against Lucie Safarova, of the Czech Republic, at the Family Circle Cup tennis tournament in Charleston, S.C., Thursday, April 3, 2014. (AP Photo/Mic Smith)