Hull KR second-rower Rhyse Martin has been ruled out for the next month with a broken foot.
The 33-year-old suffered the injury in the Robins’ Challenge Cup win over Huddersfield Giants on Saturday.
The injury could keep Martin out for their Cup quarter-final at York Knights in April.
Willie Peters’ men, who have won one of their three Super League games this season, visit Catalans Dragons on Saturday.