We'll have reaction from Celtic Park as it drops, don't worry, but it's not all about the derby today.

Still to come:

• Hearts v Dundee Utd (15:00)
• Kilmarnock v Hibernian (15:00)

Image source, SNS

Image source, SNS

Image source, SNS

Image source, SNS

Three and easy for the champions.

Celtic move five points clear of Rangers after just four games.

Sobering stuff once again for the Ibrox side on another disappointing derby day.

Image source, SNS

Pat Bonner
Former Celtic goalkeeper on BBC Sportsound

That is a big save from Kasper Schmeichel.

Kasper Schmeichel keeps his clean sheet in tact, spreading himself in trademark style to deny Ross McCausland.

A Celtic fan is crowd-surfing.

Billy Dodds
Former Rangers striker on BBC Sportsound

He has had one of his worst days, Tavernier, there is no doubt.

Since the goal, he's got that head-loss. He's been spun so many times, he doesn't know when to deepen. He's rushing his passes now, too.

He's a beaten man.

Four minutes added at Celtic Park.

Pat Bonner
Former Celtic goalkeeper on BBC Sportsound

The gap is evident here today. It's a big, big gap.

Card-happy John Beaton issues one to Greg Taylor now as the Celtic left-back commits a foul wide on the Rangers right.

A James Tavernier corner comes to nothing as the clock hits 86.

Another sobering day for Rangers in the east end of Glasgow nearing its conclusion.

Nico Raskin skies one and the home crowd dish out a sarcastic cheer.

The camera then pans to Christoph Waltz having a lovely time.

Billy Dodds
Former Rangers striker on BBC Sportsound

It has been incessant, it has been constant. Rangers have had no time to breathe. They have had their spells in the game but they could not sustain it.

Celtic have been ruthless, sharp and dominant. It's just been an all-round excellent performance from Celtic.

Image source, SNS

Off go Robin Propper, Vaclav Cerny and Dujon Sterling.

Leon Balogun, Nico Raskin and Hamza Igamane, making his debut, are on.

Kasper Schmeichel's called into action, stopping a James Tavernier volley at the back stick.

Celtic Park is bouncing to 'the huddle'.

Kilmarnock: O'Hara, Wright, Mayo, Findlay, Ndaba, Armstrong, Watson, Polworth, Kennedy, Vassell, Anderson

Substitutes: McCrorie, Burroughs, Deas, McKenzie, Mackay-Steven, Murray, Cameron, Wales, Bainbridge

Hibernian: Bursik, Miller, Ekpiteta, O’Hora, Obita, Newell, Kwon, Triantis, Molotnikov, Kuharevich, Boyle

Substitutes: Smith, Levitt, C. Cadden, McKirdy, N. Cadden, Bowie, Moriah-Welsh, Campbell, Bushiri

Amid the celebrations, Celtic make two changes.

Luke McCowan is on for his debut and is joined with Adam Idah as Kyogo and Reo Hatate head off.

Chris Sutton
Former Celtic striker on Sky Sports

What a finish. Trademark from Callum McGregor this season. Another wonderful strike.

Three goals, three points and a massive gulf between the two teams.

Image source, SNS

Pat Bonner
Former Celtic goalkeeper on BBC Sportsound

What a magnificent goal. That was self-made.

McGregor just drops the shoulder twice, steps inside and smashes it right across Butland.

James Forrest's first involvement results in a penalty appeal.

The home fans think his shot hits a Rangers hand but John Beaton says no.