Mutiny had never been more vociferous at Stamford Bridge this season as Chelsea fans booed Rafael Benítez and Fernando Torres after Swansea City consigned the Champions League winners to a 2-0 Capital One Cup semi-final defeat.
Goals from Michu and substitute Danny Graham have given the organised Swans an excellent chance of reaching their first Wembley final since the 2011 Play-off victory against Reading.
The languid Michu finished majestically in the 39th minute after Ivanović ceded the ball just outside Ross Turnbull's area, selling Gary Cahill a dummy in the process after Chelsea had threatened the visitors' goal.
Pleased to Michu
Swansea were rarely adventurous thereafter but Chelsea's dominance was sterile and whenever goalkeeper Gerhard Tremmel was called upon the saves were routine.
Torres appeared disinterested and was belatedly substituted for Demba Ba to a chorus of sarcastic applause and boos in the 81st minute, the clearest signal yet Chelsea supporters have lost faith with him. That Benítez made three separate substitutions within a 12-minute spell hardly helped Chelsea's fluidity.
Ba was booked for diving when it appeared Tremmel had clipped him in the penalty area as Chelsea chased an equaliser before Ivanović offered Graham a 90th minute gift so inviting he nearly passed on his generosity.
Ivan the terrible
The Serbian's blind backpass was intercepted by the striker, who rounded Ross Turnbull only to stumble, allowing Ivanović and Cahill to reach the six-yard box. However the former Watford goalscorer composed himself and blasted the ball past the two sliding pairs of legs for his fourth goal in as many games.
Ba, making his home debut, immediately replied but was denied his third goal in two games for his new club by the offside flag. Moments later the final shrill was sounded by referee Anthony Taylor and was drowned out by the boo boys.
Out of the Champions League, out of the Premier League race, Club World Cup final losers and nearly out of the League Cup, Benítez may have just the FA Cup and Europa League to contend with in a fortnight's time.
Chelsea 0-2 Swansea City
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(01 of58)
Swansea City's Danny Graham celebrates with his team-mates in front of the fans after scoring his side's second goal of the game (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(02 of58)
Swansea City's Danny Graham celebrates with his team-mates in front of the fans after scoring his side's second goal of the game (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(03 of58)
Swansea City's Danny Graham celebrates with his team-mates in front of the fans after scoring his side's second goal of the game (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(04 of58)
Swansea City's Danny Graham (top) rounds Chelsea goalkeeper Ross Turnbull to score his side's second goal of the game during the Capital One Cup, Semi Final, First Leg match at Stamford Bridge, London. (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(05 of58)
Swansea City's Miguel Michu celebrates scoring his side's first goal of the game during the Capital One Cup, Semi Final, First Leg match at Stamford Bridge, London. (credit:PA)
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Chelsea's Demba Ba during the Capital One Cup, Semi Final, First Leg match at Stamford Bridge, London. (credit:PA)
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Chelsea's Frank Lampard, right, competes for the ball with Swansea City's Jonathan de Guzman during the English League Cup semifinal soccer match between Chelsea and Swansea City at Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Matt Dunham) (credit:AP)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(08 of58)
Chelsea's Fernando Torres and Swansea City's Pablo Hernandez (top) battle for the ball during the Capital One Cup, Semi Final, First Leg match at Stamford Bridge, London. (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(09 of58)
Swansea City's Ashley Williams (left) and Chelsea's Demba Ba battle for the ball during the Capital One Cup, Semi Final, First Leg match at Stamford Bridge, London. (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(10 of58)
Chelsea's Fernando Torres and Swansea City's Pablo Hernandez (top) battle for the ball during the Capital One Cup, Semi Final, First Leg match at Stamford Bridge, London. (credit:PA)
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Chelsea's Gary Cahill, left, competes for the ball with Swansea City's Michu during the English League Cup semifinal soccer match between Chelsea and Swansea City at Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Matt Dunham) (credit:AP)
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Chelsea's David Luiz, left, competes for the ball with Swansea City's Leon Britton during the English League Cup semifinal soccer match between Chelsea and Swansea City at Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Matt Dunham) (credit:AP)
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Chelsea's Ramires, center, competes for the ball with Swansea City's Ki Sung-Yueng during the English League Cup semifinal soccer match between Chelsea and Swansea City at Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Matt Dunham) (credit:AP)
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Swansea City's manager Michael Laudrup, right, puts a hand on his player Wayne Routledge as he is substituted during their English League Cup semifinal first leg soccer match against Chelsea at Chelsea's Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Alastair Grant) (credit:AP)
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Chelsea's Gary Cahill, left jumps for the ball with Swansea City's Michu during their English League Cup semifinal first leg soccer match at Chelsea's Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Alastair Grant) (credit:AP)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(16 of58)
Swansea City's Ashley Williams (left) and Chelsea's Demba Ba battle for the ball (credit:PA)
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Chelsea's Fernando Torres, left, substituted off for Demba Ba during the English League Cup semifinal soccer match between Chelsea and Swansea City at Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Matt Dunham) (credit:AP)
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Chelsea's Demba Ba, left is shown a yellow card by referee Anthony Taylor, in yellow, as he plays against Swansea City during their English League Cup semifinal first leg soccer match at Chelsea's Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Alastair Grant) (credit:AP)
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Chelsea's Fernando Torres, left, shakes hands with interim head coach Rafael Benitez after being substituted during the English League Cup semifinal soccer match between Chelsea and Swansea City at Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Matt Dunham) (credit:AP)
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Chelsea's Frank Lampard (left) and Swansea City's Jonathan de Guzman in action (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(21 of58)
Chelsea's Demba Ba (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(22 of58)
Chelsea's Demba Ba (left) is booked by referee Anthony Taylor for diving (credit:PA)
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Chelsea's Demba Ba (left) goes to ground after a challenge by Swansea City goalkeeper Gerhard Tremmel (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(24 of58)
Swansea City's Danny Graham scores his side's second goal of the game (credit:PA)
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Chelsea's Eden Hazard (left) and Ashley Cole look dejected after the game (credit:PA)
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Swansea City's Danny Graham scores his side's second goal of the game (credit:PA)
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Chelsea's Branislav Ivanovic shouts at one of the assistant referees during the English League Cup semifinal soccer match between Chelsea and Swansea City at Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Matt Dunham) (credit:AP)
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Chelsea's Oscar, right takes the ball away from Swansea City's Ki Sung-Yueng during their English League Cup semifinal first leg soccer match at Chelsea's Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Alastair Grant) (credit:AP)
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Chelsea's Branislav Ivanovic, left with teammate Gary Cahill, center, part hidden by the ball, jump to head the ball with Swansea City's Wayne Routledge, and Chico Flores, right, during their English League Cup semifinal first leg soccer match at Chelsea's Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Alastair Grant) (credit:AP)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(30 of58)
Chelsea's Demba Ba (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(31 of58)
Chelsea's Demba Ba appeals (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(32 of58)
Chelsea's Gary Cahill (left) consoles teammate Branislav Ivanovic (right) after the final whistle (credit:PA)
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Swansea City's Michu attempts an overhead kick to shoot at goal as his team plays Chelsea during their English League Cup semifinal first leg soccer match at Chelsea's Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Alastair Grant) (credit:AP)
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Chelsea's Oscar, right takes the ball away from Swansea City's Ki Sung-Yueng during their English League Cup semifinal first leg soccer match at Chelsea's Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Alastair Grant) (credit:AP)
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Chelsea's Branislav Ivanovic reacts in frustration after making a back pass that was intercepted by Swansea City's Danny Graham who then scored their second goal during the English League Cup semifinal soccer match between Chelsea and Swansea City at Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Matt Dunham) (credit:AP)
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Chelsea's David Luiz,, centre, reacts after missing a chance to score against Swansea City during their English League Cup semifinal first leg soccer match at Chelsea's Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Alastair Grant) (credit:AP)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(37 of58)
Swansea City's Danny Graham (right) celebrates scoring his side's second goal of the game with teammate Jonathan de Guzman (left) (credit:PA)
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Chelsea's Branislav Ivanovic shouts at one of the assistant referees during the English League Cup semifinal soccer match between Chelsea and Swansea City at Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Matt Dunham) (credit:AP)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(39 of58)
Swansea City's Danny Graham (right) celebrates scoring his side's second goal of the game with teammates (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(40 of58)
Swansea City's Danny Graham (centre) celebrates scoring his side's second goal of the game with teammates (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(41 of58)
Chelsea manager Rafael Benitez on the touchline (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(42 of58)
Chelsea manager Rafael Benitez on the touchline (credit:PA)
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Chelsea's David Luiz, at rear attempt to head the ball under pressure from Swansea City's Dwight Tiendalli during their English League Cup semifinal first leg soccer match at Chelsea's Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Alastair Grant) (credit:AP)
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Swansea City's Danny Graham (third right) celebrates scoring his side's second goal of the game with teammates (credit:PA)
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Chelsea's Demba Ba, right heads the ball towards goal as Swansea City's Ashley Williams defends during their English League Cup semifinal first leg soccer match at Chelsea's Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Alastair Grant) (credit:AP)
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Chelsea's interim first team manager Rafael Benitez, gestures as he watches his team play Swansea City during their English League Cup semifinal first leg soccer match at Chelsea's Stamford Bridge stadium in London, Wednesday, Jan. 9, 2013. (AP Photo/Alastair Grant) (credit:AP)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(47 of58)
Swansea City's Danny Graham scores his side's second goal of the game (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(48 of58)
Swansea City's Danny Graham celebrates scoring his side's second goal of the game with teammate Jonathan de Guzman (on back) as Chelsea's Branislav Ivanovic (left) stands dejected (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(49 of58)
Swansea City's Pablo Hernandez (right) is shown the yellow card by referee Anthony Taylor for a foul on Chelsea's Oscar (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(50 of58)
Swansea City's Miguel Michu celebrates scoring his side's first goal of the game (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(51 of58)
Chelsea's Emboaba Oscar (left) in possession before he is fouled by Swansea City's Pablo Hernandez (right) (credit:PA)
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Swansea City's Miguel Michu (left) celebrates with team-mate Jonathan de Guzman after scoring his side's first goal of the game (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(53 of58)
Chelsea's Emboaba Oscar (right) is fouled by Swansea City's Pablo Hernandez (left) (credit:PA)
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Chelsea's Emboaba Oscar (right) is fouled by Swansea City's Pablo Hernandez (left) (credit:PA)
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Swansea City's Chico (right) and Ashley Williams (left) battle for the ball in the air with Chelsea's Branislav Ivanovic (centre) (credit:PA)
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Swansea City's Miguel Michu celebrates scoring his side's first goal of the game (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(57 of58)
Chelsea's Nascimento Ramires (left) and Swansea City's Chico (right) battle for the ball (credit:PA)
Soccer - Capital One Cup - Semi Final - First Leg - Chelsea v Swansea City - Stamford Bridge(58 of58)
Swansea City's Miguel Michu celebrates scoring his side's first goal of the game (credit:PA)