Dmitry Tursunov of Russia sits on the court after slipping during a return to Juan Martin Del Potro of...
Dmitry Tursunov of Russia sits on the court after slipping during a return to Juan Martin Del Potro of Argentina in their men's singles semi-final match at the Sydney International tennis tournament, January 10, 2014. REUTERS/Jason Reed (AUSTRALIA - Tags: SPORT TENNIS)