Birmingham captain Paul Robinson has been banned for three games by the Football Association.
The 38-year-old was charged with violent conduct after appearing to hit out at Aston Villa's James Chester in Sunday's 1-0 derby defeat.
The incident happened in the immediate aftermath of Gabby Agbonlahor's 68th-minute winner at Villa Park.
Robinson denied the charge and insisted his actions were not intentional as Chester ran past from his blind side.