Tennis: Tsonga withdraws from Montreal ATP event

France's Jo-Wilfried Tsonga reacts after losing the second set against Latvia's Ernests Gulbis during their second round men's singles match on day three of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, sout
France's Jo-Wilfried Tsonga reacts after losing the second set against Latvia's Ernests Gulbis during their second round men's singles match on day three of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on June 26, 2013. World number eight Jo-Wilfried Tsonga of France has withdrawn from next week's ATP Rogers Cup, organizers said Wednesday, due to a left knee injury that forced him out at Wimbledon. -- FILE PHOTO: AFP

MONTREAL, Quebec (AFP) - World number eight Jo-Wilfried Tsonga of France has withdrawn from next week's ATP Rogers Cup, organizers said Wednesday, due to a left knee injury that forced him out at Wimbledon.

Tsonga, a Wimbledon semi-finalist last year, retired from his second-round match June 26 at Wimbledon against Latvia's Ernests Gulbis because of the injury and has not played a match since.

"I am sorry that I won't be able to play in Montreal," Tsonga said in a statement. "I need to continue to rehab my knee that I injured at Wimbledon. I hope to be ready for the US Open at the end of August."

Tsonga, who reached the 2011 Montreal semi-finals before losing to eventual winner Novak Djokovic, also withdrew from this week's ATP event in Washington due to the injury.