Wakefield Trinity Head Coach Chris Chester has confirmed halfback Jacob Miller will undergo tests on the knee injury he picked up during their defeat against St Helens.
Miller had to be helped off near the end of the first half of their 34-6 defeat at the Totally Wicked Stadium.
Chester said he is hopeful he will not be out for long.
He said: “It doesn’t look great to be honest. We are hopeful it’s just his medial ligament.
“I’ve just had 30 seconds with the medical people, and they are hopeful it’s just the medial ligament, similar to the injury he picked up a few years ago against Wigan.
“If it is just the medial, then it is a four-to-six week injury. We should have Max Jowitt back next week to cover that.
“We have lost some big players in the last few weeks. We lost Tom Johnstone twice, and Jacob Miller, the captain, today. But we should have Kelepi Tanginoa back next week, we’ll have Bill Tupou back next week as well.
“We have to get on with it, keep working hard and we have another important game next week.”