Liverpool boss Kenny Dalglish was left dumbfounded after seeing his side lose 3-2 against QPR after being two goals ahead.
The Reds started the game well and produced excellent passages of play at Loftus Road, but did not take the lead until after the interval when Sebastian Coates volleyed home.
Dirk Kuyt doubled their advantage as he forced the ball home after Paddy Kenny had parried Stewart Downing's shot.
However, Shaun Derry, Djibril Cisse and substitute Jamie Mackie scored within a 13-minute period to give Rangers a win that took them out of the bottom three.
Dalglish, though, was left red-faced as his team left London with nothing having dominated for long periods during the match.
"I think for us, we were a little mindful of opinions about how we would play after getting into the semi-finals [of the FA Cup] but I think they started fantastically well," he told Sky Sports.
"For most of the game they controlled it, they passed it, they moved it. They scored two goals and could have been four or five up by half-time and they weren't.
"They came out for the second half and started quite brightly again, and they went on and got two goals and out of nowhere they have got three.
"For us, we don't really have an explanation other than to say they deserve a bit of credit for what they did.
"We should have been out of sight before it even got to that stage. It's a difficult one to take because there was so much that was very positive about the game."