Warrington prop Ashton Sims will sit out Friday's Super League derby with St Helens at Langtree Park after being given a one-match ban.
Sims, who is an ever-present for the Wolves this season, was found guilty of a grade B offence of punching when he appeared in front of a Rugby Football League disciplinary tribunal on Tuesday.
The Fiji international was sin-binned during his club's 52-18 win over champions Leeds last Friday after coming to blows with Rhinos prop Brad Singleton, who was also handed a one-match ban after submitting an early-guilty plea.
Singleton will miss Friday's home game against Catalans Dragons, but the Rhinos' England centre Kallum Watkins will be able to keep his ever-present record after being told he will face no further action for a careless high tackle on Warrington centre Ryan Atkins.
Watkins used his option of an early-guilty plea to the grade A offence.
Wakefield will be without captain Danny Kirmond for the visit of Hull KR on Thursday after he admitted a tripping offence in his side's 38-8 defeat at Salford and was given a one-match ban.
Meanwhile, forwards Gareth Hock, Jamie Acton and Micky Higham will miss Championship leaders Leigh's game against Whitehaven on Saturday as they await their hearings following the Centurions' controversial win over Swinton earlier this month.
The RFL agreed to a request from Leigh to postpone the hearings to next Tuesday. All three players are facing grade D offences.