Aberdeen beat Hearts 1-0 at Tynecastle on Friday night to move to within two points of second-placed Rangers in the Ladbrokes Premiership.
Jonny Hayes converted a Niall McGinn cross midway through the second half as Derek McInnes' men claimed a deserved victory in the capital.
It was a third straight win in the space of a week for the Dons as Hearts suffered their first home defeat since losing to Celtic on the opening weekend.