The Shannonsiders are now five points off the playoff spots with three games left to play.
Treaty United picked up an important 3-2 victory over Longford Town on Friday night to keep their playoff hopes alive, moving up to sixth in the table, and five points off of fifth place.
While the playoffs is still mathematically possible, Tommy Barrett’s men must face champions Galway and second placed Waterford in their final three games.
In contrast, fifth-placed Athlone have a much easier set of fixtures to see the season.
While it is unlikely, this Treaty side will continue to fight as long as there is a chance, and that spirit was shown on Friday evening as they picked up all three points away from home.
Following a tense first-half, all five goals were scored in the second 45, with Conor Barry scoring his first and second Treaty United goals, before Adam Lennon added the third.
Derek Daly and Dylan Hand popped up with goals for the hosts, but the Shannonsiders had done enough, and picked up their eleventh victory of the season.
Barrett’s side are in action again this Friday, as they welcome Finn Harps to the Markets Field, in what is a must-win game.