James Forrest comes on for Anthony Stokes as Celtic seek to inject fresh impetus into their attack as we approach the final 15 minutes at Hampden.

BBC Sportsound pundit Pat Bonner

Scott Brown has been all over the pitch and leading by example. I've not seen the same from Rangers.

A rare Rangers attack fizzles out as Lee Wallace sends an unconvincing chip sailing over the bar. With a rueful shake of the head, he looks down at the Hampden surface, before trudging back upfield.

Stuart Ritchie: Explain to me again why Scottish football needs this fixture? Dire.

Tom and 20 others: The 1 thing rangers could have done to give themselves a chance would have been to turn up with a game plan.

Image source, SNS

Leigh Griffiths, who opened the scoring at Hampden, is finished with his day's work and is replaced by John Guidetti.

BBC Scotland's Richard Wilson at Hampden

The game is still feisty. Celtic are playing within themselves and comfortable; Rangers searching for a response. It's Ronny Deila's side that looks more dangerous when they do break upfield.

With half an hour remaining, Celtic are aiming to take the sting out of the recent flurry of Rangers attacks. Celtic still two goals to the good, can Rangers reduce the deficit?

Leigh Griffiths chases down a long ball that seems to head up to the moon before coming down for him to strike inside the penalty area but he's denied by a combination of Ian Black and Lee Wallace.

Much better from Rangers as Kenny Miller thunders down the right before sending in a cross that is just out of reach of the diving Nicky Law.

Celtic striker Leigh Griffiths, in the mood to add to his earlier goal, scuttles up before arrowing a 25-yard free-kick narrowly wide.

Michael Dickson: Gers look very ragged and dead ball moves from them are very poor. Gordon has had nothing to do. Score to double or more

John Watt: Rangers are lacking "dig" in midfield.

The introduction of Rangers striker Jon Daly has done little to alter the complexion of the game as Celtic enjoy possession with Rangers sitting deep.

Another move sends Kris Commons clear inside the box but the ball gets stuck under his feet and Rangers recover.

Biton, Brown and Griffiths trade passes as Celtic push for a third goal. Rangers, though, are snapping at their heels and denying a clear path to Steve Simonsen.

Kris Commons has an early chance to flight a free kick into the Rangers area; it's headed clear before Commons fires in a 20-yard shot that Steve Simonsen claims at the second attempt.

Celtic get us back under way with Hampden bathed in afternoon sunshine.

Rangers shuffle their pack for the second half: Jon Daly is on for Fraser Aird as, BBC Scotland's Al Lamont reports, Rangers shift to a 4-4-2.

Here's the half-time stats for you to chew over alongside your Sunday roast.

John: Best bit of turf at Hampden today is the two technical areas, shocking state of pitch #celticvsrangers #SFA #bbcscotfootball

Brian Stokes: This game is really showing that Rangers are still light years away from being a top side in Scottish football.

Image source, SNS

The earth shook when Ian Black and Scott Brown locked horns in midfield.

Image source, SNS

Leigh Griffiths ensured early Celtic pressure paid dividends when he nodded them in front.

Image source, SNS

Kris Commons doubled Celtic's lead with a fizzing drive.

Image source, SNS

Rangers have been unable to stem the tide of Celtic attacks or threaten Craig Gordon's goal.

Tom English
BBC Scotland

This is what Celtic fans would've hoped it would be: it's been utter dominance, 2-0 going on three or four. It looks like there's going to be a few more.