Hull forward Mickey Paea has been banned for two matches for raising his knees in a tackle.
Paea, 29, committed the offence twice in the 24-4 defeat to Huddersfield on Friday, first on Antony Mullally and later on Michael Lawrence.
He pleaded not guilty to both charges, but was fined £500 and will now sit out the games against Salford and Warrington.
Meanwhile, Castleford hooker Adam Milner was banned for one match after submitting an early guilty plea to a Grade B reckless high tackle charge against Salford.
He misses Sunday’s home game against Catalans.