Superstar Dolphins halfback Isaiya Katoa has been ruled out of the NRL clash against Wests Tigers with a minor knee injury.
Brad Schneider will start in the halves next to Kodi Nikorima in place of Katoa, who hurt his knee in last Friday's defeat of the Sydney Roosters.
Katoa played through the pain and had been running at training during the week, only to report soreness closer to Saturday's game at Campbelltown Stadium.