Wolves players are furious with Wigan Athletic defender Antolin Alcaraz over a spit storm.
Television replays appeared to show him spitting at right-back Richard Stearman.
David Edwards, who scored Wolves' second goal in the 3-1 win, said: "That is out of order. That shouldn't be brought into the game and hopefully he should be pulled up on that.
"I'm sure with the television footage as well, some sort of action should be taken."