MK Dons manager Karl Robinson hailed a memorable win after Antony Kay's late header snatched a 1-0 success over Sheffield United at Bramall Lane.
Kay nodded in Shaun Williams' 87th-minute free-kick, moments after Blades substitute Febian Brandy, who was later sent off, missed an open goal.
Brandy, a 63rd-minute replacement for Jamie Murphy, inexplicably steered his 85th-minute effort wide before seeing red for a challenge on Dons defender Lee Hodson.
Robinson, whose side remain unbeaten in League One, said: "It was smash-and-grab. I thought for 60 minutes it was a stalemate with two teams whose two styles were so similar.
"It was like, we try and play, you try and play, but we knew we could stop them. They knew they could stop us and it wasn't until the substitutions that the game opened up.
"I think Febian's miss was a big moment in the game and obviously we hit them with a set-piece; it's a very rare way we win games.
"There's a tremendous togetherness among the group and this is a special place to visit in League One. It's always an honour to come and play here - and to walk away with three points, it's something we will remember for a long, long time.
"To say you've come to Bramall Lane and got three points, there are not many managers at this level of English football who can say that."
United boss David Weir said it was painful to see his side lose the game and called for his players to have more belief in themselves.
The defeat stretched their winless run in all competitions to five matches and Weir said: "I think anybody who was here today would solidly agree that we did enough to win the game but ultimately we didn't and it's a big, big disappointment.
"We did so many things right but when the opportunities came we just couldn't finish them off and that, ultimately, is the business we're in.
"When you read the papers tomorrow and we lose 1-0 and you hear the score, it's a disappointment. I realise the facts of the industry but watching the game you realise there were so many positives and we created good chances, we just couldn't get them across the line.
"There's like a pain you feel when you see it happening and it's just really, really disappointing. I think it's just the mentality, I think we've just got to find it within the dressing room, within the group first and foremost.
"Like I said, I think we did enough to win the game and it's almost like a belief in ourselves that we can do that, that we can win and what we're doing is going to be successful.
"Ultimately you're judged on results, though, and today's result was disappointing."