Dungannon Swifts manager Darren Murphy resigned following Saturday’s 1-0 defeat to 10-man Ballymena United.
David Cushley’s last-gasp winner sealed the points for the Sky Blues – who also had Matt Tipton sent off.
Murphy believes it is the right time to stand down as Dungannon boss – with the side second from bottom in the Danske Bank Premiership.
“There have been too many times this year when the team have gone through the motions and I just feel today is the right time to go,” said Murphy.
“For the amount of commitment and effort I put in I don’t feel I have got enough back this season,” he added.
“I’ve been in the Irish League for 24 years but there is only so much you can do as a manager. I don’t want to overstay my welcome and people to forget the good times we have had.
“There are a lot of great people at this club but all things come to an end and I think it needs a fresh face and a fresh voice to inject a wee bit of life into the club.”
Ballymena captain Jim Ervin had an early penalty saved by Andy Coleman after Tipton had been fouled inside the box by Andrew Burns.
Tipton was shown a red card for a challenge on Ryan Harpur on 49 minutes, but Cushley fired home the winner after Kyle McVey headed a long throw-in into the path of the winger.