Wimbledon 2013: Injured Tsonga withdraws

Men's sixth seed Jo-Wilfried Tsonga is forced to withdraw from Wimbledon at the end of his third set against Ernests Gulbis.

The Frenchman seemed in good form when he raced to a 6-3 first-set lead.

Tsonga required treatment at the end of the second set but he failed to recover and eventually retired with a knee problem while trailing 3-6 6-3 6-3.