Chelsea have parted company with Liam Rosenior - just 107 days after he took charge.
Calum McFarlane will take lead the team into Sunday's FA Cup semi-final with Leeds at Wembley and remain as interim head coach until the end of the season.
Rosenior had been appointed as a surprise replacement for Enzo Maresca in January but seven defeats in the last eight matches has led to his reign being cut short after just four months.
Rosenior had signed a six-year contract with Chelsea when he made the move from Strasbourg, who are owned by Chelsea's parent company BlueCo. But there were chants from Chelsea fans for him to be dismissed during and after the 3-0 loss at Brighton on Tuesday night.
It was a fifth Premier League defeat in a row and makes qualification for next season's Champions League unlikely. Chelsea failed to score in each of those five league defeats - their worst goalless losing league run since 1912.
Rosenior leaves Chelsea seventh in the Premier League, seven points off fifth-placed Liverpool, who have a game in hand. Maresca left Chelsea in fifth but they had slipped to eighth by the time Rosenior took over from interim boss McFarlane.
No goals, no points - Rosenior's final five PL games
Chelsea 0-1 Newcastle - March 14
Everton 3-0 Chelsea - March 21
Chelsea 0-3 Man City - April 12
Chelsea 0-1 Man Utd - April 18
Brighton 3-0 Chelsea - April 21
The 41-year-old apologised to the travelling fans at Brighton at full-time but then hit out at his players, calling their performance "indefensible", "unacceptable" and "unprofessional".
During his time in charge, Rosenior also oversaw Carabao Cup semi-final defeats to Arsenal and an 8-2 aggregate thrashing in the Champions League last-16 by Paris St-Germain.
However, he did secure FA Cup wins over Championship sides Charlton, Hull City and Wrexham (on penalties) before a 7-0 drubbing of League One bottom club Port Vale set up Sunday's FA Cup semi-final with Leeds.
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Chelsea boss and players apologise to fans.
Liam Rosenior apologises to fans with players following Chelsea defeat against Brighton, their fifth successive in the Premier League
More to follow...
Rosenior fumes at performance in Brighton defeat
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ROSENIOR POST-MATCH 21 APR
Chelsea manager Liam Rosenior claimed the 3-0 defeat to Brighton in the Premier League was an 'unacceptable' performance from his side and said that he never wants to see that again from his players
Liam Rosenior speaking to Sky Sports after Chelsea lost 3-0 at Brighton on Tuesday:
"That was unacceptable in every aspect of the game. I keep coming out and defending the players, that was indefensible, that performance tonight. The manner of the goals we conceded, the duels that we lost. Something has to change drastically right here, right now.
"We need to look in the mirror. I need to look in the mirror. But I can't keep coming out here and defending some of the things that we're seeing. Manchester United, genuinely result wasn't there but I felt we turned a corner.
"But the general attitude, spirit was lacking - determination from three or four of the starting eleven. That's nowhere near enough for this club. I can't come out and lie. I tell the truth. That was an unacceptable performance at every level."
Merson: Rosenior lost the fans and the players
Sky Sports' Paul Merson:
"When you get the sack as a manager, you get it for two reasons: either the fans are on your back, or the players aren't running for you.
"This is double bubble. And he knows that because of his interview after the game. He's taken the blame and backed the players. Tuesday was a sign to me that he knows he's in major trouble and needs to look after himself.
"Fair play, he told the truth. The players threw him under the bus, and he did the same back.
"There is no way he'll be on a contract where he gets paid up for the remainder of it. I'd be shocked. That would be more worrying to me than anything, if they think a manager who has never managed at the top level can come in and be a massive success immediately. It ain't happening."
Read more from Paul Merson as he slams the Chelsea players for their performance at Brighton
The damning stats behind Brighton defeat
Brighton out-ran Chelsea by seven kilometres
Image: Brighton out-ran Chelsea by seven kilometres
By Sky Sports' Sam Blitz...
The lack of fight by the Blues was seen in the duels.
Chelsea's players took 32 minutes to complete their first tackle of the game. By half-time, 10 out of their 11 starters hadn't managed a single one.
Chelsea rank bottom for distance covered per game
Image: Chelsea rank bottom for distance covered per game
It was no surprise that Chelsea were so limp off the ball because Chelsea have been out-run by every single one of their Premier League opponents - 34 matches out of 34.
But it's in attack where the headlines lie. To go four Premier League games without scoring a goal is bad enough but to not even register a shot on target in the fifth?
The underlying data is even worse than just 'no shots on target'. Their first half Expected Goals (xG) tally of 0.04 was lower than they had in any of Enzo Maresca's 114 halves of Premier League football as Chelsea boss - a sign of how far backwards they are going.
Read more here...
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Tim Sherwood discusses Liam Rosenior's position at Chelsea
Tim Sherwood said Chelsea players keep throwing their managers under the bus
Chelsea's next five fixtures
April 26 Leeds (N) - FA Cup
May 4: Nottingham Forest (H) - live on Sky Sports
May 9: Liverpool (A) - Premier League
May 17: Tottenham (H) - Premier League
April 25: Sunderland (A) - Premier League