Blackpool manager Ian Holloway questioned his players' professionalism after they lost 4-1 at home to league leaders West Ham.
The Tangerines slipped out of the play-off places after the defeat, despite The Hammers playing half an hour with 10 men after goalkeeper Robert Green was sent off. On-loan Arsenal midfielder Henri Lansbury replaced Green in goal as United manager Sam Allardyce had not named a specialist goalkeeper on the bench.
First-half substitute Kevin Phillips had given Blackpool hope of a comeback after James Tomkins and Nicky Maynard had put West Ham ahead, but second-half strikes from Gary O'Neil and Ricardo Vaz Te meant maximum points went to London.
"It was pretty horrendous from our point of view," said Holloway. "Only one team turned up. In every single way they were better than us, they were more professional than us, they played it in the right way on a difficult surface and we just made mistake after mistake after mistake.
"To be honest, at half-time, God knows what the real score should have been.
"Just about everything that could go wrong did. I felt my lot were caught in the emotion of it, they weren't professional, they didn't get it right and we were beaten by a better team."