Full-time: MK Dons 1-5 Chelsea
- Oscar netted a first-half hat-trick as Chelsea eased to a comfortable victory over Championship strugglers
- MK Dons grabbed a fortuitous equaliser when Darren Potter's long-range shot deflected off Nemanja Matic and beyond Thibaut Courtois
- Eden Hazard scored his first goal of the season from the penalty spot after Potter's foul, while substitute Bertrand Traore added a fifth
- The Blues remain unbeaten under interim manager Guus Hiddink, but captain John Terry confirmed post-match that he will leave the club at the end of the season
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MK Dons 1-5 Chelsea
With no substitutions remaining, Willian jogs back on and will look to run off any lingering pain. One minute of added time signalled by the fourth official.
Concern for Chelsea here as Willian requires treatment after hurting himself while trying to take on Powell. Hiddink will hope that it's nothing serious.
More late signs of ambition from Robinson's side as Daniel Powell, who replaced Carruthers a few minutes ago, sees a shot saved by Courtois.
That is a stronger crowd than the one that witnessed MK Dons' quite incredible 4-0 demolition of Manchester United in the second round of the Capital One Cup last term.
A rare foray forward from MK Dons ends as Forster-Caskey shoots over under pressure from Fabregas. Pedro then cuts inside at the other end but he is thwarted by a good block.
Baba has been a constant menace down that left flank and Fabregas is the latest midfielder to pick out his run before the Ghanaian international is pulled down by Spence, who almost concedes a penalty. A clear yellow card and an obvious sign of frustration.
Pedro picks out Baba in acres of space with a lofted ball down the left channel. Ivanovic makes a lung-busting run towards the back post but the left-back instead finds Traore, who drags a shot inches wide.
With 15 minutes remaining, Robinson sends on Maynard in place of Bowditch. The striker would have started today had he not been suffering from a hamstring problem.
Almost a sixth for the Blues as the lively Pedro tees up Fabregas to shoot straight at the legs of Martin from an acute angle.
Walsh is then cautioned for hauling down Loftus-Cheek just outside the MK Dons penalty area, but Willian's free-kick is straight into the wall.
No attacking threat from MK Dons now. The energy and atmosphere has been sapped out of the sold-out Stadium mk and Chelsea are easing to the most comfortable of FA Cup victories. This was never a contest and it's being played at walking pace.
Robinson makes his first substitution as Williams, on loan from Crystal Palace, replaces Murphy for his home debut.
We should say that MK Dons had their own half-hearted penalty appeal before Traore's shot, but Murphy was never likely to get anything after an innocuous coming together with Baba.
Hiddink makes his final two changes after the fifth goal, withdrawing Oscar and Hazard. Pedro and Willian are on, which will not make MK Dons feel any better about things.
This is quickly resembling a simple training ground stroll for Chelsea. Traore has only been on the pitch for a matter of minutes but he is allowed to glide totally unmarked into the penalty box to sweep Hazard's low pass beyond Martin.
Goal: MK Dons 1-5 Chelsea (Bertrand Traore)
Oscar appeals in vain for a second penalty after he tumbles under the challenge of Lewington. That would have been very harsh indeed.
Hall then combines well with Spence before fizzing a shot narrowly over the top.
Job almost certainly done for dominant Chelsea now and Hiddink reacts by summoning Traore to replace Costa.
Moments after Loftus-Cheek botches his attempt at a volley, Hazard bursts towards the byline and is felled by an obvious kick from Potter.
Referee Moss points to the spot and after a great deal of deliberation over who should take the penalty, Hazard dusts himself down and sends Martin the wrong way with ease.
Believe it or not, that is his first goal of the season.
Goal: MK Dons 1-4 Chelsea (Eden Hazard)
Chelsea probe patiently, with Hazard playing an eye-catching one-two with Oscar before his heavy touch scuppers the move.
The visitors come straight back but Forster-Caskey is able to block Baba's low drive.
A brief period of pressure from the men in white as Cahill deflects Murphy's cross behind but the corner is cleared by Ivanovic before Courtois confidently claims a swinging ball from Hall.