- Dons go to within three points off leaders Celtic
- Powerful Hayes strike put Dons ahead
- Church close-range effort doubled lead
- Griffiths' low shot consolation for visitors
Aberdeen substitute Peter Pawlett takes over from Simon Church, who is given a warm applause from the home fans following his scoring debut.
Frustration for Celtic as Gary Mackay-Steven's inswinging corner is not attacked by any of his team-mates and the ball drifts harmlessly out.
- SMS Message: @Pete short memory Leigh Griffiths 27 goals this year! That's above average from Anonymous
BBC Scotland at Pittodrie
"Aberdeen should in truth be further ahead with Church missing a glorious chance early in the second half and Rooney also going close. 'Sacked in the morning' is ringing around Pittodrie and whilst perhaps unlikely, Ronny Deila is now under some serious pressure. His side simply aren't doing enough here."
Niall McGinn makes way for Aberdeen and on comes Andy Considine.
Twenty minutes of regulation time remaining.
James Forrest replaces Callum McGregor for Celtic.
- SMS Message: Two terrible games in a row from Griffiths. Too much praise for an average overall player. from Pete
Celtic captain Scott Brown goes into the referee's book following an off-the-ball challenge.
Adam Rooney just mis-times his header after a corner delivery takes a nick on its way towards the back post and the Aberdeen forward heads just wide.
An audacious effort from long range by Niall McGinn has Celtic goalkeeper Craig Gordon at full stretch to beat away. The Dons are playing with a lot of confidence.
Aberdeen fans briefly start celebrating after Graeme Shinnie's low ball fizzes in towards the left-hand post but goalkeeper Craig Gordon had in fact smothered the ball, much to the visiting support's relief.
Leigh Griffiths' looping header drops wide of the Aberdeen goal.
Leigh Griffiths fires a low ball across the Aberdeen box and substitute Colin Kazim-Richards is inches away from making a crucial connection.