Vassell smashed the ball home and with Doncaster tiring it looked like the end of their challenge.
BBC: SPORT | Football | League Cup | Doncaster 1-1 Man City (aet)
Ireland lit up an otherwise poor match when he made a cracking connection with Darius Vassell's cross from the left.
Darius Vassell gave City the lead from the spot early in extra time after the first 90 minutes finished goalless.
BBC: SPORT | Football | League Cup | Doncaster 1-1 Man City (aet)
But City were not done yet and Elano volleyed over from six yards before substitute Vassell somehow scored the winner.
Darius Vassell's pass across the box finding the midfielder after Michael Johnson had intelligently let the ball run through his legs.
Our hero was soon limping, it became clear he could not carry on and he was eventually replaced by Darius Vassell.
Elano was somehow running the game from right-back, picking out Vassell behind the defence and finding Petrov with some wonderful crossfield passes.
It was a great feeling when Darius Vassell scored our first goal and, when the second went in, it was almost unreal.
Vassiriki Diaby dispossessed Darius Vassell with a crunching tackle and fed Eboue, whose whipped cross from the right was clinically despatched by Rosicky.
The ball fell to Vassell and he powered in at the second attempt after his first strike was blocked by Van der Sar.
But for all of the visitors' opening endeavour, a calamitous communication breakdown between Sol Campbell and David James gifted Vassell the opening goal.
Hughes' plans for the new season suffered a blow on Tuesday when Darius Vassell was ruled out for 10 weeks with a knee injury.
Pompey were a man down just before half-time when Hermann Hreidarsson was sent off for impeding Darius Vassell as the City forward ran through on goal.
Darius Vassell put City in front after a defensive mix-up on 10 minutes, with Martin Petrov doubling the lead with a deflected strike two minutes later.
In the end his third effort struck the wall before Vassell wasted the final chance of the match with a shot which was too close to Myhill.
Hughes has released former England international striker Darius Vassell, while England Under-20 forward Daniel Sturridge has joined Chelsea for a fee to be resolved by a tribunal.
Vassell then broke towards the City goal in a two-on-two attack but he failed to find strike partner Juan Pablo Angel, making his first appearance of the season.
Gregory is likely to name an unchanged side with Ugo Ehiogu and Darius Vassell injured and recent signing Benito Carbone cup-tied after playing in the competition for Sheffield Wednesday.
City's Vedran Corluka ghosted into space and lashed a 25-yard drive narrowly wide on 10 minutes, while Vassell saw a deft flick-on whistle wide from a Martin Petrov free-kick.
BBC: SPORT | Football | Premier League | Man City 1-0 Aston Villa
Derby missed a couple of opportunities to clear and Vassell crashed the ball home from six yards after Neil Danns' powerful strike rebounded off the foot of the post.
Darius Vassell came off the bench to provide a brief moment of hope when he was played in by teenager Michael Johnson on his City debut, but the striker shot wide.
But while Chopra immediately caught the eye with some lively play and a shot, it was Vassell who made the more telling contribution with a flash of inspiration before Ireland's explosive finish.
James ended a thoroughly entertaining first half with a world-class fingertip save to prevent Vassell's accurate curling left-foot strike from the edge of the area from sailing into the top right corner.
Striker Darius Vassell also pulled out on Tuesday with a stomach upset but there was better news for Eriksson as skipper David Beckham has shaken off a slight knock and will definitely play.
After 56 minutes both managers had seen enough, with Sven-Goran Eriksson throwing on Rolando Bianchi for Mpenza having withdrawn Michael Johnson, who was struggling with a groin problem, for Vassell at the break.
Eriksson made one alteration from the side which beat Sunderland, with Vassell replacing Sun Jihai and attacking midfielder Elano shifting to right-back, a position he has previously filled for Brazil and former club Santos.
Despite their numerical disadvantage, Portsmouth rallied and continued to conjure opportunities - although City fashioned counter-attacks through Vassell and Benjani, the latter firing wide of James's right post from the edge of the box.
City's form deserted them drastically as McIndoe, James Coppinger and Paul Heffernan all scored for the hosts while Vassell hit the bar before Budtz saved from Antoine Sibierski and Dunne to take the hosts through.
BBC: SPORT | Football | League Cup | Doncaster 1-1 Man City (aet)
Portsmouth's rearguard was severely hampered when Hreidarsson was adjudged to have impeded Vassell as he ran on to Ireland's through ball on 40 minutes, a foul which referee Andre Marriner believed merited a straight red card.
应用推荐