Montreal - Next week's Montreal Masters has lost Frenchman Jo-Wilfried Tsonga to a knee injury which has kept the world number eight inactive since Wimbledon, the tournament announced on Wednesday.
"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 has not played more than a month since joining what turned into an injury exodus at the All England Club.
But there is apparent good news for ATP number 10 Stanislas Wawrinka, who had to quit a match last week in Gstaad with back injuries.
The Swiss is reportedly signed up for promotional duties in Montreal which would assume his presence on court.