Arsenal defender Thomas Vermaelen will serve a one-match suspension after the Premier League club's appeal against a red card he received against West Ham was rejected on Tuesday.
"At a Regulatory Commission hearing today, a claim for wrongful dismissal from Arsenal defender Thomas Vermaelen was dismissed," a Football Association statement read.
The 24-year-old Belgian international saw red in the first half of Saturday's 2-0 win over the Hammers for a last-man challenge on striker Guillermo Franco.
Second-placed Arsenal are already without Vermaelen's injured defensive partner William Gallas for Saturday's league match at Birmingham City.