Castleford winger Kirk Dixon has been ruled out for six weeks after suffering a calf tear in training.
Dixon, 28, has had a troubled few years through injury, having spent lengthy spells on the sidelines with neck and shoulder injuries over the past two seasons.
Head Coach Ian Millward said: “Dixon was out for seven months after undergoing neck surgery as well as having six months out with a shoulder injury the year before, so I really feel for him.
“He is our best goal kicker so there is no doubt it is a blow for us.”
Last season, the former Hull man scored three tries and kicked 39 goals in 17 appearances for the Tigers.