Lee Bowyer must sit out the first two games of the season for Birmingham City.
The FA rejected claims he had served a three-match ban for his sending off v Preston on April 25.
Bowyer was on loan from West Ham when he was dismissed.
He sat out Blues' last-day win at Reading. When his loan ended, he went back to the Hammers who had three Premier League games left. Blues argued he completed his ban during that period.