Wigan Warriors have banned five fans from attending matches after an incident at Huddersfield last month.
The five have been given a three-year ban with two years suspended, and Wigan marketing director Simon Collinson said that similar scenes would not be tolerated.
"We have an amazing group of supporters who we are still proud to call our loyal 18th man," said Collinson.
"The actions of a few will not be allowed to ruin the great support that 99.99% of our fans provide week in week out or tarnish the great reputation they hold throughout the sport.
"It is with great sadness that we have had to ban these people as it is the first time in my nine years at the club that we've been forced to take such action."
Wigan travel to Castleford later this afternoon. The match gets underway at 3.30pm.