Motherwell manager Stuart McCall lamented poor defending from his experienced players following the 3-1 defeat by Dundee.
The visitors raced into a three-goal lead before Henrik Ojamaa pulled one back for the Steelmen.
It was Well's seventh Scottish Premiership defeat from 10 games this season, leaving them second-bottom of the division.
"From an experienced side, that was really disappointing," said McCall.
"I just felt defensively we were very poor. The goals we have lost were really poor.
"Fair enough, it's a great goal from Clarky (Dundee's David Clarkson) but he is all on his own. I think Mick (Stephen McManus) has got his hand up for offside but he is nowhere near offside and we are not trying to play offside.
"The second goal they carve through us and we don't pick up or organise.
"Defending is not about being a brilliant header of a ball or a brave tackler, it's about communication, awareness and organisation, and that we are certainly not doing at the moment."