Wigan boss Roberto Martinez has apologised to Wolves counterpart Mick McCarthy over the Antolin Alcaraz spitting row.
McCarthy believes Latics skipper Alcaraz will be regretting the incident which has landed him a three-match ban.
The Paraguayan defender has accepted an FA misconduct charge for spitting at Wolves defender Richard Stearman.
The incident happened during the closing moments of Wolves' 3-1 win at Molineux and sparked a huge melee between both sets of players.
Referee Lee Probert did not see the incident, but the FA decided to take action against Alcaraz following Sunday's game.
McCarthy said: "What happened was unacceptable. I have spoken to Roberto and he apologised on behalf of the club.
"I don't think it is indicative of Wigan, of Roberto, or Dave Whelan. They are lovely people, a lovely club, and I think Alcaraz has just made a mistake."
He added: "Personally I'd rather have a smack in the mouth than be spat upon.
"It's the worst thing you can do to a fellow professional. He will be regretting it now and will have to take the consequences."