Penrith continue to count the cost of their qualifying final loss to Canberra with Frank Pritchard joining second row partner Trent Waterhouse on the sidelines for the remainder of the NRL season.

Pritchard was diagnosed with a torn hamstring, the injury ending his eight-year tenure with the club with the Kiwi international to join Canterbury next season.

His absence - along with that of Waterhouse who suffered a torn pectoral muscle in the loss to the Raiders - leaves a massive hole in the Panthers forward pack ahead of Saturday night's semi-final against the Sydney Roosters.

Lock Luke Lewis was cleared of any further damage to his calf and shoulder, while the return from suspension of skipper Petero Civoniceva will be a welcome boost for the Panthers.

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