Castleford hooker Ryan Hudson will not be charged with biting England international Sam Tomkins after the Rugby Football League decided there was insufficient evidence.
The Wigan full-back made the claim during his side's 40-16 Super League win over the Tigers at the DW Stadium last Friday. The incident was put on report by referee George Stokes and the RFL's match-review panel requested more information from Wigan before deciding whether to bring any charges.
A spokesman said: "The RFL compliance manager has deemed that there is insufficient evidence to support an allegation of biting by Castleford Tigers hooker Ryan Hudson in a Stobart Super League Round 22 match against Wigan Warriors."
The news will come as a disappointment to Wigan coach Shaun Wane, who said earlier: "If one of my players did that, they wouldn't need suspending - I would not accept it.
"I am surprised he's done that. Ryan Hudson is a good professional, he must have had a brain explosion."
Hull prop Mark O'Meley has been fined £500 for punching Salford captain Stephen Wild during his side's 34-26 win over the Reds at the KC Stadium on Sunday
The disciplinary committee decided not to suspend O'Meley, who was sin-binned for the offence, after taking into consideration his guilty plea, but imposed a fine to reflect the potential for injury.
Wild, who was also charged with the same grade A offence of punching, was suspended for one match after submitting an early-guilty plea.