Altrincham have been unsuccessful in their appeal against the red card given to Tom Hannigan.
The Robins defender received a straight red in the 1-0 win over Woking in the National League earlier this week.
The dismissal was for denial of a goalscoring opportunity.
Alty have explained today: “After studying video footage of the incident, and concluding Tom made contact with the ball initially and any subsequent contact could be deemed mutual and accidental, Alty decided to lodge an appeal.
“At a meeting of the FA’s regulatory commission, members of the panel considered Alty’s case but ruled it was not an instance of wrongful dismissal.
“A decision letter was relayed to the club yesterday, and Hannigan will now serve a one-match suspension, meaning he will miss Tuesday’s home game with Hartlepool United.”