Wolves midfielder Jamie O'Hara was upset with Wigan Athletic defender Antolin Alcaraz after he spat at Richard Stearman.
Stearman chose not to discuss the incident after yesterday's win.
But O'Hara said: "You can't spit. There's no need for that in the game.
"We're all footballers together who shake hands after the game, but you can't be spitting at fellow professionals. It's just not right."