Longford manager Denis Connerton hailed his county's stunning victory over Monaghan as "one of our greatest victories".
Longford produced a remarkable performance to dump the Ulster champions out of the qualifiers as Robbie Smyth's late goal proved decisive in a 2-13 to 1-13 triumph in Clones.
Connerton admitted he had warned his team that they needed to be at their best just to give the Farney men a decent test, but the Leinster side went well past that standard to deliver one of the shocks of the GAA summer.
"It's a fantastic evening," said Connerton, who was also in charge when Longford beat Monaghan at the same venue in 2004.
"We knew we'd be up against it and that we'd have to play out of our skins to stay in the game.
"Then to win it we really had to play way above ourselves. So we played very well this evening, it was a brilliant, brilliant performance.
"All of those guys put in such a marvellous effort, it was really gigantic what they put into that game.
"We're after taking out a top-five team. To win here in the qualifiers ranks as one of our greatest victories.
"It's tremendous for us and possibly is the greatest victory we have ever had in the qualifiers, because we are after beating the Ulster champions.
"To come out of Ulster is some achievement and for us to come up here and beat them in their own backyard, that is some achievement also.
"Of course the six-day turnaround is difficult and Donegal took a lot out of them and they were tired. But for us it was just one of those fantastic, fantastic achievements."
Longford face a similarly short wait for their next game as they go into Monday morning's draw, which will see them pitted against one of Cork, Mayo or Kildare.
But, Connerton insisted the quick turnaround would not play as big a part next week given all four sides were in action today.
"We'll be on a level playing field, same as the other teams in our side of the draw," he told RTÉ Sport.
"All we can do is try and recover as quickly as possible. There's euphoric scenes here but we'll just have to get everybody back to earth as quickly as we possibly can.
"You'd love to be able to enjoy the moment but really it is only a moment, because you have to start looking ahead."
