The Football Association has rejected Bolton defender Gary Cahill's appeal for wrongful dismissal against Arsenal.
Cahill was controversially shown a straight red card by referee Stuart Attwell for a challenge from behind on Marouane Chamakh at Emirates Stadium during Bolton's 4-1 defeat.
Bolton boss Owen Coyle was hopeful of having the red card overturned after being infuriated by the decision last Saturday.
However, the FA has rejected Bolton's appeal and it means Cahill will be forced to serve a three-game ban.
An FA statement said: "At a regulatory commission hearing today, a claim for wrongful dismissal from Bolton Wanderers defender Gary Cahill was dismissed.
"As a result, Cahill's three-match suspension will remain and will be served with immediate effect."
It means Cahill will miss this weekend's clash with former club Aston Villa, the home game with Manchester United and the Carling Cup tie against Lancashire rivals Burnley.