Aston Villa skipper Stiliyan Petrov says their set-piece defending was woeful for defeat to West Bromwich Albion.
Boss Alex McLeish blasted his players for their errors in a 4-1 defeat at Manchester City last week and, despite extensive work in training, West Brom netted twice from Chris Brunt corners.
Skipper Petrov groaned: "We conceded at set-pieces again which has become a little bit frustrating because we are usually very good at those.
"You can work as hard as you want on the training ground but if no one is there to head them out in games there is no point."