Bolton Wanderers manager Owen Coyle blamed schoolboy defending for his side's 3-0 derby defeat at the hands of Blackburn Rovers on Sunday.
Rovers had goals from Niko Kalinic, Jason Roberts and Gael Givet to thank for their biggest win of the season.
Bolton remain deep in relegation danger after a run of just one win in 11 games left them languishing down in 18th place in the Premier League table.
"I was disappointed with our performance today," explained Coyle. "It's no excuse to say you've played a lot of games, we still expect better that what we offered today.
"I think there was a 20-minute period at the start of the second half where we looked like ourselves and could have had an equaliser.
"We had bits and pieces in the first half, which I thought was quite scrappy.
"We paid a heavy price and the goals we lost and I wouldn't expect to lose those goals in the school playground.
"There were two Blackburn players in offside positions for the second but they didn't affect the goal and Sam Ricketts was certainly playing Roberts onside.
"The third goal, we've allowed a short free-kick to be taken and put no pressure on the ball.
"That was really disappointing given how well we've been defending of late and obviously not scoring.
"When you do those two things well, you get results and points - and we didn't do that well enough."