Last Updated: 02/02/11 9:47pm
City will view it as two points dropped and perhaps concede their title hopes are now over but struggling Birmingham deserved a draw, which is a welcome boost to their survival hopes.
Kolarov bends it round the wall and inches wide of the far post. And that proves to be the last kick of the game as the final whistle goes to end an action-packed draw at St Andrews.
Zigic pulls back Boateng to give City a free-kick just inside their own half. Tevez is then brought down by Johnson 25 yards out. Perfect territory for Kolarov.
Birmingham look as likely to snatch a winner as City, with Kolarov having to hack clear from Gardner on the edge of their box.
Jiranek clears as City play the ball in front of the Birmingham box, before Dzeko hooks the ball into the danger zone and Foster takes the catch under pressure from Silva.
Johnson heads Bentley's corner goalwards and Hart catches it just under the bar. Four minutes of stoppage time are indicated.
Phillips tries his luck with a speculative volley from 25 yards and Hart has to back-pedal and tip it over.
Hart gets play restarted. Tevez drops back to get possession and his ball for Boateng down the right channel is too long.
Bentley's right-wing cross is headed clear by Kompany before Ridgewell's diagonal ball is too long for Zigic and it's a City goal-kick. Hart receives treatment for a blow to the head. The City keeper has a small gash above his left eye.
Ridgewell exchanges passes with Beausejour deep on the left but his cross is too long for Zigic, Hart fumbles the low cross back in and thankfully for the visitors, Toure is on hand to clear.
Blues' top scorer Gardner fancies it...but it's Bentley who tries his luck, curling it straight into the City wall.
Carr heads the corner clear before Kolarov plays it back to Hart. Blues come back at City and Vieira trips Phillips again, this time almost 25 yards out.
City pouring forward now before Kolarov loses possession on the left. Still plenty of time for the visitors to secure victory, though.
City are straight back on the attack, with the visitors queueing up on the edge of the Blues box. Boateng's cross is then punched out by Foster and Silva turns it over with Foster out of position. The Spanish playmaker should have done better there.
GOAL! Craig Gardner steps up and smashes the spot-kick high to the Hart's right. The City keeper guessed the right way but it was too high and too powerful for the England man to stop a seventh goal of the season for Gardner.
Beausejour turns Vieira before finding Carr on the opposite flank. Blues progress up the right before Phillips is brought down by Vieira just inside the City box and it's a Birmingham penalty.
Zigic is flagged offside from Bentley's ball down the right. Lee Bowyer makes way for Chilean winger Jean Beausejour.
Milner's cross is headed clear by Jiranek as far as Kolarov, who tests Foster with a fierce 25-yard drive.
Dzeko lays off for Milner in the Blues box but Jiranek makes a well-timed tackle to clear the danger, and Phillips comes on for the home side, replacing Cameron Jerome.
Jerome manages to keep in Bentley's deep cross but Hart can gather with ease. Kevin Phillips is about to come on for Blues.
Milner's cross clearly hits the right arm of Stephen Carr in the box but it wasn't deliberate so the penalty isn't given despite a big shout from City.
The game's really opening up now as City break again, with Tevez hitting a curling effort straight at Foster from Silva's lay-off.
City break but Dzeko loses possession before Blues come back at the visitors, with Jerome's cut-back going to Vieira.
Bentley's corner finds Bowyer, who sidefoots it goalwards and against Boateng. Claims for a penalty are in vain.
Boateng fails to keep a Vieira pass in and it's a Birmingham throw. Vieira's not quite got to grips with the game yet.
Jerome accidentally treads on the calf of Kolo Toure. The pair receive treatment while City boss Roberto Mancini hands a note to Jerome Boateng on the touchline.
Ferguson finds Jerome in the right channel but his cross is taken by Hart, player of the year on loan at Birmingham last season.
City break with Tevez feeding Silva in the box. His cut-back is blocked by Ferguson before Jiranek turns it behind.
A nicely-worked free-kick comes out to Jiranek, who fluffs his shot, before Johnson heads wide at the far post. Johnson had headed the initial ball down and is causing City some real problems from set-pieces.
Bentley's delivery is headed clear by Kompany but Bentley puts it back in. Hart is challenged by Johnson and City are given a free-kick.
City are still in possession, with Jerome Boateng exchanging passes with Dzeko before testing Foster from the right side of the Blues box.
Blues keep the pressure on with Bentley cutting in from the right before laying off for Gardner, who slices a left-footed strike well wide from 25 yards.
Zigic flicks on for Bentley, who sends a 20-yard volley dipping over the crossbar. Good start to the second half by the home side.
Birmingham are straight on the front foot and Bentley fires over from a wide angle after linking well with Ferguson on the left.
The two sides are coming out for the second half and City are preparing to make their second change, with Patrick Vieira coming on for Nigel de Jong. The Dutchman must still be groggy after that clash of heads with Richards.
So, can Blues come back into it or are City destined for another three points? Let us know your views at email@example.com
Kompany finds Kolarov down the left and he cuts inside Carr before delivering a poor low cross. Boateng puts it back in but it's gathered by Foster. And the whistle goes for half-time at St Andrews with Man City 2-1 up.
Bentley's free-kick fails to clear the first man but he whips in another good ball which Gardner almost latches on to.
Bentley knocks the ball past Kolarov on the right wing before being chopped down. The City goalscorer is the second man in the book.
Lull in play now but the visitors will have to get back on it as there'll be plenty of stoppage time played before the half-time whistle goes.
Birmingham win a free-kick in the City half, which is headed back across goal by Johnson but Kompany heads clear.
The Serbian full-back has been threatening to do just that with his trusty left boot all season and after scoring his first City goal against Leicester in the FA Cup, he hits the free-kick around the wall and just inside the bottom corner, leaving Foster stranded.
GOAL! And Birmingham are right to be worried as Aleksandar Kolarov smashes it into the bottom corner to put City back in front.
Dzeko has another chance to run at Blues and is brought down by Gardner for a 20-yard free-kick. Good position for City this.
Nigel de Jong then comes sprinting back on with a bandage on his head...only to be sent back to the opposite touchline and the fourth official!?!
Kolo Toure is now on the field as Richards is carried off, to generous applause from both sets of fans.
Richards is helped onto the stretcher. He has just moved his arm so he's no longer unconscious. City signal they are making an immediate substitution.
De Jong is walking off with a towel held to his head but Richards is still on the floor. The City defender has clearly come off worse. There's a stretcher on now too.
Zigic's poor touch allows Silva to nip in and lay off for Barry down the left. His cut-back finds Dzeko in the box but the £27million striker drags a right-footed shot wide on the turn. Sila might have been better placed to take that one.
City break and win a free-kick on the right, which goes through to the opposite flank, where Milner unsuccessfully claims a foul.
The referee lets play continue after Nigel de Jong's poor challenge on Bentley but then gives then shows the City midfielder the game's first yellow card.
Terrible defending by the visitors as they let Zigic run, leaving Hart totally exposed. The slightest of touches from the striker - if, indeed, he does touch it!
Sloppy play now as neither side are able to keep possession, before Blues win a free-kick on the left wing.
Terry ("Irish but in Cape Town") reckons: "I fancy City to absolutly steamroll Birmingham tonight using great semi counter-attacking football to win 3-0, Tevez brace."
Barry Ferguson is having treatment after going over on his ankle. Plenty of you are going for a City win by two goals. But Birmingham fan, Gabriel Sutton, is going even further: "Looking up the line-ups, I don't like to say it but I'm plumping for a 4-0 Man City win. I think their midfield will outweigh ours and disrupt our defence. Tevez to get 2, Dzeko & Silva."
Carr gets to the byline down the right and crosses for Jerome to head back across goal. A poor clearance by Barry allows Zigic to volley goalwards from 20 yards and Hart tips over.
Richards outmuscles Zigic on the edge of the City box but Jerome then heads over from a fine right-wing cross by Bentley. Positive signs there for Blues.
City win another corner and it's a comical attempt by Milner as he kicks the flag out while rolling the ball back into play. Blues charge upfield.
Jerome is fouled on the edge of the City box by Micah Richards but Bentley's free-kick is charged down.
A bobbly pitch is making it difficult for the two sides to play it around but Milner manages to find Tevez in the right channel. Tevez is unable to cut it back, though, and Foster gathers.
Billy Armstrong has gone for a 3-1 win to City, with Tevez on the scoresheet. You're on your way, Billy!
Stephen Carr's poor cross is cleared by James Milner before City build possession and Gardner cuts out Tevez's pass intended for Silva.
The Birmingham defence stood off as David Silva jinked into the box before finding Tevez. He turned and fired goalwards from a wide angle and his shot bobbled inside the far post off Jiranek.
GOAL! City are in front already through a deflected strike from skipper and top scorer Carlos Tevez.
James Milner crosses from the right but Gareth Barry is unable to reach with his head. Ben Foster charges out to clear for throw being doing well to hold on to Edin Dzeko's low cross.
The visitors get the game under way and Nigel de Jong soon gives the ball away before Craig Gardner fires off target from just over 20 yards.
News that Yaya Toure is suffering from flu while Obafemi Martins is out of the country to sort out his visa.
But the hosts are also desperate for the points as only goal difference seperates them from the relegation zone heading into tonight's Premier League games.
With Man United, Arsenal and Chelsea all winning last night, City will be keen to keep up with their title rivals having lost last time out across the city at Aston Villa.
Mancini makes five changes for tonight, with Vincent Kompany, Aleksandar Kolarov, Nigel de Jong, David Silva and top scorer Carlos Tevez all coming back in. Kolo Toure is on the bench but brother Yaya is out altogether so may be carrying a niggle.
City also made changes for their FA Cup draw at Notts County but it was hardly a weak side given Roberto Mancini's star-studded squad.
Only Liam Ridgewell, Martin Jiranek, David Bentley and Nikola Zigic remain, with Czech defender Jiranek making his first Premier League appearance. Curtis Davies is on the bench while fellow new signing Obafemi Martins mustn't be fit enough yet as he isn't even amongst the subs.
Blues boss Alex McLeish fielded a weakened side for Saturday's FA Cup win over Coventry so there are a further seven changes for their return to Premier League action tonight.
Birmingham: Foster, Carr, Jiranek, Johnson, Ridgewell, Bentley, Gardner, Ferguson, Bowyer, Jerome, Zigic.