Radek Stepanek Pictures

  • PERTH, AUSTRALIA - JANUARY 03: Radek Stepanek of the Czech Republic defeats Milos Raonic of Canada playing as a substitute for John Isner of the United States who retired injured in the men's singles match during day seven of the Hopman Cup at Perth Arena on January 3, 2014 in Perth, Australia. (Photo by Will Russell/Getty Images)