Arsenal have lost their appeal against David Luiz's red card during Tuesday's Premier League match against Wolverhampton Wanderers, but a ban for Southampton's Jan Bednarek has been overturned by the Football Association.
Luiz was sent off for the third time in his Arsenal career after the centre back was adjudged to have committed a last-man foul on Willian Jose in the box in a 2-1 defeat at Wolves.