Oldham have parted company with head coach Matt Diskin with immediate effect.
The Roughyeds have lost their last seven Championship games and have lost nine of their last 10 league games. Assistant coach Brendan Sheridan will now take charge of Oldham’s training.
Oldham chairman Chris Hamilton said: “This is never something I like doing and in this case I feel sorry for Matt because the mistakes we are making are not down to coaching.
“They are costing us games, however, and we need to do something to get us into the dog-fight to stay in the Championship.
“Matt has worked very hard during his time at the club, most of which has been during Covid, which has been very difficult for a number of reasons.
“I’ve enjoyed working with him too, which makes this decision all the harder, but I have had to do what I think gives the club the best chance of moving forward.”
Oldham are without a game this weekend after their scheduled match at Toulouse was cancelled following the UK Government’s latest review of travel guidelines.