Liam Rosenior lashed out at an "indefensible" performance from his Chelsea side and said something must change "drastically" after they were thumped 3-0 by Brighton.
Chelsea's Premier League losing streak stretched to five games, their worst since 1993, as they were put to the sword at the American Express Stadium on Tuesday.
Ferdi Kadioglu, Jack Hinshelwood and Danny Welbeck scored for a dominant Brighton side, who leapfrogged Chelsea into sixth place.
Rosenior's team did not manage a single shot on target and have now failed to score in five consecutive league games, the club's worst run since November 1912.
Chelsea are now seven points off the top five with only 12 to play for, and the Opta supercomputer now assigns them just a 1.3% chance of Champions League qualification.
In addition to Aston Villa (98.9%), Manchester United (98.2%) and Liverpool (90.6%), Brighton (6.1%), Bournemouth (2.8%) and Brentford (1.8%) are viewed as more likely to qualify.
Asked if he had just seen the worst performance of his three-month reign, Rosenior told Sky Sports: "By far. By far. It was unacceptable in every aspect of the game.
"I keep coming out and defending the players, but 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."
Asked what that change might be, Rosenior said: "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. Against Manchester United, genuinely, the result wasn't there, but I felt we turned a corner.
"But the general attitude and spirit was lacking – the determination from three or four of the starting 11. 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."
Across each team's last nine games in the Premier League, only 18th-placed Tottenham (two) have won fewer points than Chelsea (five – W1 D2 L6).
The Blues managed a meagre 0.04 expected goals (xG) in the first half of Tuesday's game, a lower tally than they recorded in any of Enzo Maresca's 114 halves of Premier League football at the helm. It was also their longest wait from kick-off (41 minutes) before attempting a shot in any game this season.
And at the other end, Chelsea have failed to keep a clean sheet in 12 Premier League games, their second-worst run in the competition, after a 13-match streak during 1996-97.
Blinksclinton1997
0
To be honest the coach is not the problem, some of the players don't have the strength to fight for a win. lazy player's.
Gauzy
0
If the drastic changes that Rosenior calls for doesnt include BlueCo Out and Rosenior Put, then its not a drastic change.
zuzbeilmru
0
thunder fire u manager
Suncdilrsz
0
Winning is sure serious once only 080❤️ 259❤️ 284❤️ 04❤️
Suncdilrsz
0
If you know you are a good staker why not come let's win ✅ 080❤️ 259❤️ 284❤️ 04❤️
Yoyabceipr
0
Let's start the change by sacking Rosenior immediately. Useless coach
Luebeikno
0
not d coach d problem we have players who r not fit to play for chelsea trust jus look d team so much lazy ass player pay much money no performance
kizbkrsuy
0
ya and the change will start from him
Jacqfunda
0
Guys please spare the coach there are problems at Chelsea that go far beyond the manager,for instance,how did we get maresca fired?how about pochettino before him?and Thomas tuchel? you don't change coaches for fun,there must be genuine reasons,and it's these same players who were on long winning streak under this Coach,now what changed and they are losing without fighting at all at all
Fris
1
Drastic changes from who
Nemcems
0
they should let that coach leave becoz his realy lost
Biodilmnyz
0
Look at this this good for nothing baby coach
Duoabcemo
1
fire..this..man..now
Mitchello2
1
When i ,a Chelsea fan said sacking Maresca was a Huge mistake , many other Chelsea fans said it was the right decision from the management. Now see where we are now !!!
Exactly, they were celebrating his sacking
Hikcdeiot
0
Even FA cup Leeds 4 Chelsea 0
Hikcdeiot
1
Even Chelsea Bosses and management they don't know about football
jucbdeklu
0
Fire Liam Rosenior and Liam Delap
so you don't like the Liams?
Fapadeknz
1
Fire Liam Rosenior and Liam Delap
Fapadeknz
1
Fire Rosenior
Pohabcekrz
0
When i ,a Chelsea fan said sacking Maresca was a Huge mistake , many other Chelsea fans said it was the right decision from the management. Now see where we are now !!!
ziteknrsty
1
just sack him please
Puoadnruy
1
worst coach that has no idea and no pattern
Puoadnruy
0
nothing is bad with this performance to me, we just need to stay focus and end the season at the bottom of the table, we deserve it because we just found ourselves in the hand of the worst owner ever. 😭😭😭😭
fawbdklmtu
1
Thanks to Enzo Marscea he gained the most points at the beginning otherwise Chelsea will be next to Tothitham or Worse than them don't know what's the problem and why management is not bringing quality manager
ChelseaFan321
1
he can't keep on Playing Neto and Delap while they don't give anything 🚮
kitbilnopt
2
And Chelsea will lose all the four remaining games and finish on position twelve, sack the so called idiot coach
seeadmpsz
1
The hammer must come down and come down really hard rosenior must be sacked straight away kick him straight out the gate get you idiot stupid dopey jackass you and them goggles stuck too your face every time i see you get out and dont even dream of ever comeing back you mule
zazdeisuyz
1
nonsense coach
Tobbclnpry
1
Chelsea gonna win conference league trophy again 🤣
AbdulZaks008
2
Chelsea,s Last 5 EPL games... 5 Loses 11 Goals concede 0 Goals scored 0 Wins 0 draws Yikes 😳
vaciklmptz
0
Bet and see Chelsea will finish 11 position and go to relegation zone next season
maximanuel01
1
it's a nightmare to watch Chelsea games this Days, extremely heart breaking 💔
naoadept
2
please 🙏 Chelsea board sack this coach reasoning be he's not mature enough to coach Chelsea. Let him leave the club. Comment from sierra Leone 🇸🇱 west Africa.
Widbiltz
0
Drastic changes,what about all those yahoo boys acquired by Chelsea since last season
buweilnpy
2
The worst coach ever known. This guy is a joke. Whoever hired him smokes weeds
Ivanoadam4
3
Too bad..