Celtic moved three points clear at the top of the Scottish Premiership after a comfortable 3-0 win at Partick Thistle on Wednesday night.
The Bhoys move clear of Aberdeen, and still have a game in hand on the Dons as Ronny Deila's men begin to tighten their grip on the title once again.
Celtic's night got off to a perfect start, with new signing Gary Mackay-Steven opening the scoring inside the first sixty seconds on the game.
Fellow new arrival Stuart Armstrong got his name on the scoresheet after half an hour to make it 2-0, before Stefan Johansen wrapped the game up with a third goal on 66 minutes.
It was a comfortable night's work for Celtic, and a sensational start to life with the Bhoys for deadline day arrivals Mackay-Steven and Armstrong, with both former Dundee United stars opening their accounts.
With the big Europa League tie against Inter Milan on the horizon, both players impressed and did their hopes of facing the Italian giants no harm with their displays.
Manager Deila was asked about their performances after the final whistle, and the Norwegian was full of praise for the pair after their contributions against Partick.
RD on Gary Mackay-Steven: 'It was a good start from him and we have seen it in training that they are good players.' (MH)— Celtic Football Club (@celticfc) February 11, 2015
RD on both debut Bhoys: 'We knew they could make an impact and they will get even better in a good team like Celtic.' (MH)— Celtic Football Club (@celticfc) February 11, 2015