Middlesbrough head coach Michael Carrick was at a loss to explain how his side gave up a three-goal lead and drew 3-3 at home to Sheffield Wednesday.
Finn Azaz's double and a goal from Ben Doak had them three up after 30 minutes and seemingly cruising towards three points.
But three goals in 14 second-half minutes, which also included a red card for Boro defender Rav van den Berg, saw the Owls stage an incredible comeback.
It meant Carrick's team slipped out of the Championship's top six.
"There were so many good things in the first half to be in a position like we were in and be in a commanding position going into the second half," Carrick told BBC Radio Tees.