New Latics coach Dino Maamria begins his reign with a 3-1 League Two win at home to Morecambe.
Maamaria watched Oldham clinch their first home victory with goals from Mohammed Maouche, Desire Segbe Azankpo and Jonny Smith.
The home side deservedly struck after 33 minutes, with Zak Mills delivering from the right and Maouche nodding in from close range.
Mills doubled Oldham's lead after 51 minutes when his cross found Segbe Azankpo, who controlled neatly before finishing in style.
Morecambe replied 12 minutes from time when AJ Leitch-Smith did well to set up fellow substitute Shaun Miller for a simple tap-in.
Home nerves were jangling as Oldham had sacrificed two-goal leads in their last two outings, but Smith settled it with a minute remaining by slamming in Johan Branger's pass.