Argentine Isa a play-off doubt for Toulon

The 24-year-old loose forward was injured in Saturday's 59-13 thrashing of Castres that assured Toulon of a play-off spot.

"He needs to see specialists to know more about the seriousness of his injury and the length of absence," Toulon said in a statement.

Earlier on Monday, regional newspaper Var Matin said Isa had ruptured his cruciate knee ligament and his season was over, although Toulon have not commented on that claim.

Agence France-Presse