League Two Chesterfield have axed boss John Sheridan after three years in charge.
The Spireites have failed to win any of their four competitive fixtures this campaign, having been relegated from League One last season.
"He's been relieved of his duties, he's on gardening leave," chief executive Chris Turner told BBC Radio Sheffield.
"This isn't just about the four games this season, there's a bigger picture here.
"There's no names being mentioned about someone else coming in. This decision has been made over the weekend.
"I can't speak highly enough of John because I think he has been fantastic for this club."
Assistant manager Tommy Wright and goalkeeping coach Mark Crossley have been placed in temporary charge.