Goals from Troy Parrott and Conor Coventry in the first half helped Dons put the game to bed as they moved into second spot in League One.
Here's how we rated the players at Stadium MK.
1. Jamie Cumming - 7
Had one half-save to make when Long almost got in behind, but was kicking himself at the end for conceding in stoppage time to dirty his clean sheet. Endured long periods with nothing to do.
3. Dean Lewington - 7.5
Never troubled defensively, so showed off his attacking prowess with a brilliant assist for Parrott's opener
4. Harry Darling - 7
Cruised through defensively, and went on a few of his trademark romps forward, even unleashing an effort which did not trouble the keeper
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