Ian Ryan’s side went down 2-0 to Treaty United.
Athlone fell to a second defeat in three games in the League of Ireland on Friday night.
Ian Ryan’s side went down 2-0 to Treaty United in Markets Field after goals from former Town defender Ben Feeney, and a Cian Curtis penalty.
The result leaves Athlone in third place in the standings after six games, while Treaty remain bottom of the standings after getting their first win of the campaign.
The Midlanders return to action against league leaders Cork in Turner’s Cross on Friday.