The Paraguay international was sighted spitting at Molineux captain Richard Stearman in the dying moments of last Sunday’s Premier League clash, and has been handed a three-match ban by the FA.
McCarthy has criticised the South American for the act, but revealed that Martinez has apologised on behalf of the DW Stadium club.
“What happened is 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 he [Alcaraz] has just made a mistake,” McCarthy told The Guardian.
“I don’t know where it came from but he’s made a stupid mistake and got punished with a ban, and we all think that is right.
“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,” he concluded.
By Gareth McKnight