Ross Embleton made two changes from last weekend’s defeat at Cheltenham. Jordan Maguire-Drew and Josh Wright returned to the starting line-up in place of James Dayton and Lee Angol.
Orient started on the front foot and fashioned the first real chance of the game in the ninth minute. A neat flick from Maguire-Drew found Craig Clay in space down the left, he then played a ball into the feet of Danny Johnson whose strike rippled the side-netting.
The bright start continued minutes later, James Brophy stood up a ball at the back post that almost found Conor Wilkinson, before the Oldham defence eventually bundled it away for a corner.
From the resulting set-piece the O’s broke the deadlock. Maguire-Drew’s in-swinging corner caused havoc in the opposition box with the ball being turned in by a combination of Ouss Cissé and an Oldham body.
The lead didn’t last long though as the away side struck back immediately through Zak Dearnley, the 21-year-old turning home from Carl Piergianni’s flicked header.
Dearnley then added another just three minutes later to flip the score on its head. The former Manchester United man this time prodding in from close range following a set-piece.
Johnson flashed a header wide from a Maguire-Drew cross as Orient battled to find a way back into the game before half time.
Christopher Missilou and Danny Rowe both had efforts from outside the box for the visitors, however both saw their strikes fail to find the target meaning the score remained 2-1 going into the break.
The O’s looked improved following the restart. Brophy’s overlapping runs from full back were causing the Latics defence problems and one of those bursts forward won his side a free kick in a dangerous position in the 53rd minute.
Wright stepped up to take the set piece and swung a ball in towards the back post. It was met by Cisse, who headed back across goal into the path of Johnson, he then tapped home to equalise and net his first goal for the club.
Immediately after the goal, Embleton made his first change of the day bringing on Ruel Sotiriou for Wilkinson.
Set pieces were proving fruitful for the O’s with another corner almost resulting in another goal. This time Dan Happe heading narrowly over from Maguire-Drew’s in-swinger.
Shortly afterwards, George Marsh found space down the right and put in a teasing cross that agonisingly evaded everyone in red.
Oldham had the ball in the back of the net in the 63rd minute, but David Wheater saw his effort chalked off by the referee for a foul in the build-up.
Orient remained in control of possession but struggled to create anything clear cut, as the game remained tight for the next twenty minutes with stoppages punctuating the play throughout.
With minutes remaining, the Orient defence had to be called into action for the first time in the second half. Josh Coulson clearing well from a dangerous cross, before Lawrence Vigouroux pulled off a fine save to deny Rowe.
The O’s had one last chance to win it deep into stoppage time as Maguire-Drew stepped up to curl in a corner. His delivery was met by Happe who saw his effort cleared off the line forcing Embleton’s side to settle for the point.
ORIENT: Vigouroux, Coulson, Clay, Wilkinson (Sotiriou 55”), Maguire-Drew, Happe, Brophy, Marsh, Cissé, Johnson, Wright
SUBS: Sargeant, Widdowson, Dayton, Angol, Kyprianou, Sweeney
BOOKED: Happe 31”
GOALS: Cissé 11”, Johnson 54”
OLDHAM: Woods, Mills, Missilou (Maouchie 74”), Sylla, McCann, Smith, Wheater, Piergianni, Hamer, Dearnley (Dieseruvwe 86”), Rowe
SUBS: De La Paz, Branger-Engone , Nepomuceno, N’Guessan, Borthwick-Jackson
BOOKED: Mills 8”, Hamer 45”, McCann 58”
GOALS: Dearnley 15”, 18”
REF: James Oldham
ATT: 5.334 (522)