F-T: MK Dons 0 Rotherham United 4
Nine points clear of the drop zone and unbeaten in eight matches ... Rotherham look to have all but mathematically secured their Championship survival after a 4-0 demolition of MK Dons.
They destroyed the home side and cut them adrift in the third and final relegation spot with only five games of the season to go.
Manager Neil Warnock has guided the Millers to six wins and two draws in their last eight fixtures and a raucous away following over around 3,000 supporters sang his name throughout the match.
Rotherham got off to a dream start and were a goal up within a minute.
Grant Ward made a superb break down the right and Matt Derbyshire smashed the ball into the roof of the net, after seeing his initial effort saved, with just 54 seconds on the clock.
Dean Bowditch headed wide for the home side soon after, but the Millers were 2-0 up on 17 minutes when Leon Best coolly stroked home a penalty after Richard Wood had been felled by goalkeeper Cody Cropper.
Best refused to give the ball to Greg Halford, who had converted a spot-kick in the win over Leeds United last week, and delivered when he needed to.
MK were poor and, despite their season being on the line, never rattled Warnock's men who were too sharp and too competitive for Karl Robinson's side.
The visitors wrapped up the match in the 54th minute when fans favourite Kirk Broadfoot buried his header from Joe Newell's free-kick, sparking wild scenes in the away end.
Richie Smallwood added to the Millers' delight in the 80th minute with a looping 20-yarder to make it 4-0.
The only blot on a near-perfect day for Rotherham was an injury to key midfielder Lee Frecklington who limped off in the 40th minute.
The Millers were unchanged from their 1-1 away draw in the Battle of Bristol City in midweek, even keeping the same bench as centre-half Lloyd Doyley's inflamed knee ruled him out of contention again.
Halford suffered whiplash during the hostilities at Ashton Gate, but had recovered enough to take his place as a defensive midfielder at stadiummk.
Rotherham's delirious fans had to be stopped from invading the pitch as Broadfoot celebrated his first goal for the club.
But there was no stopping the magnificent Millers' safety march.
MK Dons (4-2-3-1): Cropper; Baldock, Kay (Maynard 77), Walsh, Lewington; Potter, Forster-Caskey; Bowditch (Baker 67), Williams (Carruthers 67), Murphy; Revell. Subs not used: Burns, Spence, Long, Powell.
Rotherham United (4-1-4-1): Camp; Kelly, Broadfoot, Wood, Mattock; Halford; G Ward, Smallwood, Frecklington (Newell 40), Derbyshire (Thomas 77); Best (D Ward 54). Subs not used: Kenny, Facey, Richardson, Clarke-Harris.
Goals: Derbyshire 1, Best pen 17, Broadfoot 54, Smallwood 80 (Rotherham).
Referee: Iain Williamson (Berkshire).