David Unsworth's first game in charge of Latics ended in defeat at the hands of Bromley.
Michael Cheek troubled the Oldham defence early on, he got his head to a number of crosses, including one that forced Norman to tip his effort over the bar.
Carragher charged forward with the ball, giving possession to Luke Burgess deep in the Bromley half. Burgess tried his luck from a good shooting position, but it failed to trouble Tom Smith.
Bromley, who came into this game with the best home record in the National League, took the lead just after the half-hour mark, Latics failed to clear their lines and Omar Sowunmi smashed home from close-range.
Last season’s FA Trophy winners doubled their lead minutes later, Jude Arthurs’ cross from the right hand side found Reece Hannam at the far side, who fired home from a tight angle.
Latics went in two goals down at half-time.
Oldham pushed to half the deficit as the second-half kicked off, Luamba twisted and turned outside the box, but couldn’t aim his shot on target.
Bromley got their third when their corner flew towards the far post and Mike Fondop turned it into his own net.
Benny Couto came on in place of Threlkeld, playing in central midfield, and looked decent as Latics looked to pick up a consolation goal.
Jack Stobbs created a number of chances for Latics as the game wound down, he had two shots saved in quick succession after he cut in from the left, the second shot was parried awkwardly to McGlynn who couldn’t get it under control.
Oldham: Norman, Stobbs, Burgess (Fondop 45), Sheron, Roberts, Cooper, Tollitt, Threlkeld (Couto 71), Wellens (McGlynn 45), Luamba, Carragher.
Attendance: 3628 (401)