Wakefield’s Oliver Wilkes has had his appeal against a one-match ban dismissed by the RFL Disciplinary Committee.
Wilkes, 32, was handed the suspension for a reckless tackle on Rob Burrow during the Wildcats’ 38-18 win over Leeds on Monday night.
The forward will now miss Wakefield’s derby clash against Castleford this weekend.
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Johnstone was absent on Boxing Day.
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A round-up of rugby league’s Boxing Day action.