Leeds boss Neil Warnock pulled no punches after watching his side suffer a 3-0 defeat at Ipswich and laid the blame firmly at the feet of Tom Lees.
The centre-half was sent off for a dangerous, high tackle on Jay Tabb just after the half-hour mark, with the visitors well on top at Portman Road. The red card proved a major turning point and David McGoldrick's double either side of half-time was followed by a third from Jay Emmanuel-Thomas.
"It's difficult doing a press conference when you think you should have won three or 4-0 and you've lost 3-0," said Warnock. "It's a crazy day and I can't believe we haven't won. We've got one lad who's let everyone down. He's let me down, the team down and all the fans who travelled here.
"It was one stupid moment. I don't know what else I can say, other than it was a ridiculous tackle. We were dominating. I've never been to Ipswich and dominated as much as that in my life and if I were (Ipswich boss) Mick (McCarthy) I'd fill in a lottery ticket tonight."
Warnock admitted the defeat put a major dent in his side's already slim npower Championship play-off chances. "Mathematically, we're still going but it means we've got to win every game now," he said.
McGoldrick opened the scoring seconds before half-time. Carlos Edwards' cross was headed against the bar by Luke Hyam, but McGoldrick was in the right place to nod in his third Town goal.
Hyam was also the architect of the second goal, soon after the restart. The midfielder battled into the area and cut in from the left, before squaring to McGoldrick, whose shot deflected in off substitute Jason Pearce.
Town's third came midway through the second half when Aaron Cresswell's cross reached substitute Emmanuel-Thomas, who showed quick feet before drilling a low shot inside the right-hand post.
McCarthy said: "I'm pleased because it's the first time I can remember when we got away with an ordinary performance. Leeds were better than us, certainly for 30 minutes.
"It was our turn to have a bit of good fortune and the red card changed the game. I don't think anyone could argue against it. It was a sending off, in my view."