Hull KR hooker John Boudebza is facing the threat of suspension after an incident during Sunday's clash with Castleford.
Frenchman Boudebza has been charged with making dangerous contact on Tigers centre Michael Shenton during the 16-16 draw in the first round of the First Utility Super League.
Boudebza, who was charged by the Rugby Football League's match review panel, could be banned for up to two games if found guilty of the grade B offence when he appears in front of a disciplinary panel on Tuesday.
With former England hooker Shaun Lunt already sidelined following ankle surgery, Rovers could be left without a specialist No 9 for Sunday's game at Warrington.