A fight between Manly staffers Willie Peters and Dan Ferris could cost them their jobs after a wild night in the Rocks.

The NRL is awaiting a report from Manly following revelations Sea Eagles assistant coach Willie Peters and the club's head of high performance, Ferris, were involved in a fight outside the Orient Hotel. Police were called to break up the fisticuffs and issued an infringement notice to Peters for offensive behaviour. Neither of them cooperated with police inquiries.

Exit: Manly assistant coach Willie Peters departed Manly by mutual agreement on Friday. Credit:Simon Alekna

It's understood neither Manly nor the NRL were aware of the incident until Fairfax Media broke the news on Thursday morning.

Ten clubs have already been eliminated from the premiership race and not a single player has brought the game into disrepute during Mad Monday festivities. However, the Sea Eagles staffers could be sacked if a club investigation finds they have breached the club's behavioural code.