Harry Kewell's team put on another promising display, this time against higher league opposition.
Taking place in the late afternoon, which coincided with a break in the recent downpour, and rescheduled to be hosted at the Nigel Doughty Academy in Nottingham, it was a chance for Latics to play against Sabri Lamouchi's team in what would be their first pre-season fixture after narrowly missing out on the Championship play-offs last month.
With Kewell opting for a similar formation as to previous fixtures, it included the same two trialists in the centre of midfield again as the boys in blue started the brighter and were rewarded for their efforts.
Keillor-Dunn continued his fine form since signing for the club by scoring his third goal in as many pre-season games in the fifth minute.
His effort was a looping header, running onto the ball and rising the highest in the six yard box after a floated cross from the equally impressive Zak Dearnley on the left hand-side of Forest's area, after they failed to clear a corner properly.
Comfortable in possession, Latics played against a first-half Forest side that featured the likes of Michael Dawson, Sammy Ameobi, Lewis Grabban, Matty Cash, Brice Samba along with recent additions Lyle Taylor and Tyler Blackett.
The second goal came on the half-hour mark as Latics quickly broke on the counter through Keillor-Dunn who was supported by McAleny.
The latter on the left found Dearnley in the box. His turn in a tight area from a few yards out meant he could get a shot off and place the ball into the back of the net.
Having joy down both wings, it was the link-up play between the front four of Grant, Keillor-Dunn, McAleny and Dearnley that caught the eye and kept the opposition on the back foot.
Grabban hand a handful of chances in and around the box, with his shots either going off target or landing into the grasp of Lawlor.
In the second-half though, Forest fielded a new side that included well-known players such as Albert Adomah, Joe Worrall and Carl Jenkinson.
As the game progressed, Kewell made sure his travelling squad was also rotated, but it was thanks to some crucial saves and quick reactions at close range from Lawlor that made sure a clean sheet was recorded, as Latics failed to threaten the hosts as much as they did in the opening 45.
Worrall played some fine pin-point passes from the heart of defence to get Forest on the front foot and attacking through Adomah who looked lively down the left wing.
Fage prevented the winger from scoring though by running over 40 yards to recover and put him under pressure, meaning he dragged his shot wide after a quick change from defence to attack as Oldham lost possession in a dangerous area.
But, the trialists and second-year scholars from the academy held their own in the closing stages and most importantly kept Alex Mighten at bay who looked like their best chance of scoring in the second-half with his pace.
Team: Lawlor, Hamer (Fage 69'), Jombati (Trialist 76'), Piergianni (Sutton 76'), Borthwick-Jackson (Trialist 57'), Grant (Da Silva 69'), Trialist (Hough 69'), Trialist (Trialist 76'), Keillor-Dunn (Trialist 69'), McAleny (Luamba 57'), Dearnley (Rowe on at HT).