Victory is a real smash-and-grab by Paul Clement's Derby side. MK Dons had numerous chances, but the Rams showed their Championship experience by showing a finishing touch when it really mattered.
Derby are into the play-off places ahead of the 15:00 BST kick-offs, while MK Dons remain 20th in the table.
To relive the win Derby fans, you can read Gary Smee's finely-crafted report here.
That's all from us, but you can follow the rest of Saturday's action, and reaction to Tottenham's victory over Manchester City, via this link.