Celtic comfortably saw off Partick Thistle on Wednesday evening, racking up a 3-0 win at Firhill Stadium - which now leaves them three points clear at the top of the Scottish Premiership.
The Bhoys have now opened up a gap at the top of the table, and even have a game in hand on second placed side Aberdeen.
Ronny Deila handed debuts to deadline day signings Gary Mackay-Steven and Stuart Armstrong, and his faith was repaid after just 37 seconds.
Mackay-Steven turned the ball home from close range inside the first minute to give Celtic the lead, before Armstrong made it two after half an hour.
Fellow midfielder Stefan Johansen then made it 3-0 on 66 minutes, handing the Hoops a convincing victory in what could have been a potential banana skin.
Winger Mackay-Steven will grab all the headlines after a sensational start to life as a Celtic player, and he reflected on his debut during an interview with club's official website.
"I’m obviously delighted to have made my debut, first and foremost, and to score straight away settled some nerves," he admitted. "It was a great day all round for me. I have been here just over a week and I was itching to just play my first game. I was ineligible at the weekend and I didn’t like watching from the stands, I just wanted to be out there with the boys."
“It came tonight and it was a great experience for me, the boys helped me through it. It (the goal) was a bit of blur. You just want to get your first tough right to settle into the game but to score so early was great for me and the team overall played very well and we were well worth the three points," added the former Liverpool trainee.
With Kris Commons potentially out of Celtic's big Europa League tie against Inter Milan, it's vital that Mackay-Steven hits the ground running given that he could end up replacing him - and the game against Partick couldn't really have gone much better for him.