Martin Taupau will miss three weeks of football thanks to a swinging arm on James Maloney in Friday night's 33-8 loss to the Roosters.
Taupau has taken the early guilty plea on a grade three "dangerous contact - head/neck" charge. He was sin-binned in the 75th minute for the high shot.
It was one of many woes for the Wests Tigers in the round 20 loss.
Chris Lawrence sustained an ankle injury just 42 seconds into the game which is likely to see him miss a few weeks of footy.
And the game was marred by 13 errors and 11 conceded penalties, leading coach Jason Taylor to declare the team beat themselves on Friday night.
"We have been harder on ourselves than we have been all year after that one because we were good enough to win that game," he said in the post-match press conference.
"I think we should have won it.
"The game was four ties to two for a long, long time and we just kept dropping that ball.
"We have to be better than that.
"We beat ourselves tonight. I don't feel that the Roosters beat us."
Fans may be buoyed by the possible return of captain Robbie Farah when Wests Tigers play the Melbourne Storm at Leichhardt Oval this Friday.
"Robbie hasn't been able to tackle for four weeks and he needs to be able to do that at training to be part of that improved defence that we're working on," Taylor said.
"Hopefully he can do that this week and we'll see him on Friday night."