Gary Megson has been relieved of his duties as Bolton manager with immediate effect, the club confirmed on Wednesday.
The 50-year-old leaves the Reebok Stadium with Wanderers 18th in the Barclays Premier League. His final game was Tuesday night's 2-2 draw at home to Hull.
A club statement read: "The decision has been taken in the light of the position the club finds itself in the Barclays Premier League at the halfway point of the season. Assistant manager Chris Evans and first-team coach Steve Wigley will take charge of first-team matters for the interim period."
Megson's departure is unlikely to be lamented by the Bolton support.
Even though he helped save the club from relegation when he took over after an ill-fated stint by Sammy Lee in 2007, the Trotters faithful have never warmed to a man dubbed "the Ginger Mourinho".
Countless times he was forced to deflect attention on himself away from the team, insisting the fan reaction was not having an impact.
But chairman Phil Gartside knew that situation was unsustainable over the long-term and, after tossing away a two-goal lead at the Reebok Stadium on Tuesday night, has decided to act.
With an FA Cup tie against lowly Lincoln looming on Saturday, followed by a Premier League trip to Arsenal next Wednesday, it is not as if Bolton have any breathing space to take stock.
Evans and Wigley will take temporary charge, although whether Gartside appoints either man on a full-time basis is open to doubt given the disaster that unfolded when he appointed Lee from Allardyce's backroom team.
Megson becomes the third Premier League boss to lose his job this season, and the second in less than a fortnight following Mark Hughes' exit from Manchester City.
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