Dundee United boss Peter Houston was disappointed with the lack of fight his players showed towards the end of their 4-0 defeat to Rangers.
An own goal from Sean Dillon set the ball rolling early in the first half, before a Kenny Miller brace either side of a strike from substitute Steve Naismith.
And it was the nature of his side's late collapse that riled Houston.
"For 70 minutes, we were right in the game," he said.
"We did okay, we had plenty of possession and a couple of sniffs at goal but after the second goal we retreated and accepted defeat and that was disappointing.
"We need to get mentally tough and get back into the game, rather than accept defeat."