Wakefield coach Chris Chester was frustrated no punishment was handed out for the tackle that ended Tom Johnstone’s evening in the defeat to Wigan.
Johnstone, 25, was forced off with a head knock sustained from a tackle by Willie Isa after 28 minutes and never returned.
The game remained tied 6-all at half-time, but Wakefield struggled to contain Wigan in the second half, with Isa laying on two of Jake Bibby’s hat-trick of tries.
Chester said: “Losing Tom didn’t help.
“I thought something should have been done at the time. It was a high tackle and, because it wasn’t put up as foul play, we lost a substitution.
“I’m not sure why it’s not been picked up when we’ve got all these camera angles. There was contact on the head.
“But that’s not cost us the game, the start to the second half cost us the game.
“We had some real good control first 40 minutes. I thought we dominated field position.
“The second 40 minutes is not good enough. We’ve got to work harder for 80 minutes. We didn’t match that energy that Wigan came at us.”
Wigan coach Adrian Lam said he didn’t expect any further action for the challenge.