Jackson Hastings is one of three Super League players to be sanctioned by the Rugby Football League (RFL) for breaching COVID-19 protocols.
Wigan Warriors half-back Hastings, Huddersfield Giants prop James Gavet and versatile Warrington Wolves teenager Riley Dean were given 14-day bans and fined for failing to abide by the rules.
Reigning Man of Steel Hastings has already served his suspension, while Gavet will be free to train and play from Thursday and Dean's ban ends on Sunday.
The RFL's chief regulatory officer Karen Moorhouse said: "COVID protocols were established in the weeks leading up to the resumption of the Super League season earlier this month, with an emphasis on player education and collective buy-in, and with clubs encouraged to agree and enforce their own codes of conduct.
"In the main the protocols have been observed, and we are grateful to the majority of clubs and players and other individuals involved for their responsible and disciplined approach.
"However, we are in a situation where breaches of the protocols by any individuals connected with the game could have serious repercussions for all – either an impact on individual and public health, or in terms of disruption to the rescheduled fixtures list.
"It is therefore important that appropriate sanctions reflecting the reasons for the regulations are imposed. The ability to enforce a 14-day stand-down reflects this."