Charlton Athletic boss Guy Luzon has admitted that his side put in a "really poor performance" during their defeat to Birmingham City.
The Addicks saw their four-game unbeaten run in the Championship come to an end on Saturday as they suffered a 1-0 reverse at St Andrew's.
Despite losing by a single goal, Luzon concedes that his players deserved to come away with nothing.
"It was really a poor performance," he told BBC Sport. "The way we played was not very good.
"We played without patience and over 90 minutes we deserved to lose. I think it was our worst performance since I joined the club. The object was to play positively and I didn't like this kind of performance."
Charlton play their final game of the season next Sunday when they host promotion-chasing Bournemouth.
