Karl Robinson was "ecstatic" with his players after MK Dons clinched a 2-1 victory at Oldham.
Robinson's side led 2-0 at half-time thanks to goals from George Baldock and Izale McLeod. And, despite former Dons striker Charlie MacDonald pulling one back for Oldham, they held on for a win which keeps them in play-off contention.
Baldock grabbed his first league goal after just four minutes, drilling into the bottom corner from the edge of the box.
McLeod converted Stephen Gleeson's through-ball to double the lead after 41 minutes, while Ben Reeves hit a post as Dons threatened to run riot.
Oldham improved dramatically after a triple substitution at half-time.
MacDonald headed in Gary Harkins' corner in the 57th minute, but the visitors held firm under pressure with goalkeeper David Martin bravely denying MacDonald in the closing stages.
Robinson said: "The way we won the game was testament not only to individuals but to the team.
"I couldn't be happier. Coming to Oldham on a Tuesday night, all the stats told you we would lose.
"To concede from a set piece was disappointing, but the way we rose to the challenge after that was tremendous.
"I'm ecstatic. I don't usually get this excited after a game, but we knew this would be difficult and to a man the players were sensational.
"I'm made up for George Baldock getting a goal. He got a terrible whack at Bradford on Saturday and it was touch-and-go whether he would play here.
"He has become a bit of a favourite with our fans and when I told him I needed him, he said he'd be ready."
Robinson also praised 17-year-old midfielder Dele Alli, adding: "He showed again that he's special.
"He had a row with their manager in the second half and I told him he'll be apologising for that, but his last two performances have been tremendous."