The St Helens prop Jason Cayless has been ruled out of this weekend's Super League Challenge Cup final against Hull after the New Zealand star suffered knee ligament damage.
Cayless sustained the injury in Monday's 40-22 win at Huddersfield and is certain to miss the Wembley showpiece.
Coach Daniel Anderson will wait until the last minute to decide on the fitness of England's Samoa-born prop Maurie Fa'asavalu, who has a hamstring injury.
Nick Fozzard is expected to replace Cayless, while club captain Paul Sculthorpe, Australian back-rower Chris Flannery and former Wigan prop Bryn Hargreaves will make their Wembley debuts after missing Saints' win over Catalans Dragons a year ago.
