Denis Betts has described Gareth Hock's sending-off during Widnes Vikings' 22-22 draw with Bradford Bulls as "an absolute joke".
The second rower was dismissed during the first half for dissent, leaving Widnes a man short for much of the match.
After the match, the Vikings coach told reporters: "It was an atrocious decision and an absolute joke. It was a very poor decision and a player should not be sent off for swearing.
"Are we in a schoolyard? You shouldn't get sent off for swearing. Maybe warn him or a sin bin but not a sending off. It's very frustrating."
Despite Hock's dismissal, Widnes fought back from 20-4 down at half time to share the points with their opponents.
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