Oldham Athletic boss Paul Dickov was berating his defenders after his side gifted Coventry City 1-0 win at Boundary Park.
Seaking to the Press Association, Dickov said: "It was an unacceptable goal to concede and we aren't keeping enough clean sheets.
"The warning signs had been there a few minutes earlier, but we still allowed the cross to come in and we still gave their player room inside our box.
"I'm talking about basic defending and we work on these things every day, so we need to take them into games.
"I'm not stupid and I know we need results, but I also know that that's going to start happening."