BBC Sport has confirmed that Chesterfield have sacked manager 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.
Sheridan, 47, led the club to promotion in 2010-11 and guided them to the Johnstone’s Paint Trophy last season.
However, relegation back to the bottom tier and two draws and a defeat from his side’s opening three League Two games have cost him his job.
Chesterfield appointed the former Oldham boss as manager in June 2009.
After narrowly missing out on a place in the play-offs in his first season in charge, finishing eighth, the former Sheffield Wednesday and Republic of Ireland midfielder helped the club to promotion as champions in 2010-11.
They were unable to carry that momentum into the following season though and, despite victory in the Football League Trophy, he was unable to stop them making an immediate return to League Two.
Hopes were high at the Proact Stadium at the start of the season but defeat at AFC Wimbledon, followed by home draws with Rochdale and Rotherham have seen him relieved of his duties.
Assistant manager Tommy Wright and goalkeeping coach Mark Crossley have been placed in temporary charge and will take the club to Gillingham, one of the two clubs in the division with a 100% record, on Saturday.
Sheridan’s most famous moment for the Republic of Ireland came during a 1994 World Cup qualifier against Spain in Dublin. Spain were leading 3-0 with 15 minutes to play and Sheridan scored what appeared to be a consolation goal.
When the few more games in the Group that were left to play ended up being played, Sheridan’s goal against Spain was eventually the difference between the Republic qualifying and not as the Boys in Green pipped Denmark on goals scored for a trip to USA’94.