CELTIC have dominated Rangers in the league and cup this season and can make it three in a row tomorrow.
I confidently backed the champions in the previous two – at Celtic Park and Hampden – but this will be their biggest test.
Rangers haven't lost at Ibrox in more than a year but saw their winning run end at St Johnstone on Wednesday and lie 16 points off the pace.
Celtic have lost a little focus since exiting Europe but haven't dropped any points and have notched 14 Premiership victories on the bounce.
The fact is on their day they're the better team but in derbies that's not always the deciding factor.
Celtic have been backed from evens to 8-11 at McBookie and spokesman Paul Petrie said: “This is without a doubt Celtic’s hardest challenge in the league this season but the odds still suggest they will come away from Ibrox with at least a point. And punters are confidentthey will be picking up all three.
“Rangers are still undefeated at home this season and it is 11-10 that remains the case after Saturday.
“Celtic are 10-3 to go through the season unbeaten, 11-8 to win the Treble, 5-6 to notch 100 points and 4-6 to hit 100 goals.”
While I'm tipping Celtic at a best 4-5 with William Hill I wouldn't write off an improving Rangers side.
Mark Warburton would love to hand his biggest rivals a first defeat of the season and give fans something to scream about and drown out tonight's bells.
Moussa Dembele will be the man Warbs fears most. He bagged a hat-trick in the 5-1 league win and hit the only goals in the Betfred Cup semi-final.
Scott Sinclair's another to consider and he is 5-1 at McBookie to bag the opener.
Martyn Waghorn's found a bit of form and is 13-2 at McBookie to break the deadlock and 9-4 at Skybet to score. He was also rested in midweek.
There has been one red in the games (Phillippe Senderos) but this could be the most fiery given the occasion and date. It's a big day for Steven McLean who has been handed his first Old Firm clash but a red flashed is a best 8-5 at boylesports.
He's been card-happy this season, showing 86 yellows in 18 games as well as four red. In only one game has given fewer than two bookings.
Only once this campaign has he taken charge of Celtic and flashed five yellows at Aberdeen while in the Rangers-Aberdeen league encounter this month he booked NINE and sent off two late one.
So can he keep his Christmas cards in his pocket? Bookings are giving nothing away but Skybet's 3-1 on between 65-85 card points could be value.
Elsewhere there are three other derbies in the Premiership as the matches come quick and fast.
Inverness have won five in a row away to Ross County but will do well to make it six after one win in eight. I don't have much faith in County either but there are usually goals so take over 2.5 at 3-4 with Marathonbet.
St Johnstone look in better shape than Dundee and are 11-8 at McBookie to win the Tayside derby.
Hamilton v Motherwell's been a tight contest with four out of six going under 1.5 goals. Back under 2.5 at 9-10 with McBookie.
In the Championship there's only one derby but it's a tasty one as St Mirren host Morton.
Morton ended a barren run in this fixture with a win at Cappielow but Saints have improved and this could be a draw. Both teams should score at 11-17 with 888sport and that's the best bet.
Hibs were knocked off the top when dropping two points at home to Raith last week and face a tough test at Falkirk and a draw is possible at 13-5 with bet365.
New leaders Dundee United should win at Dumbarton and are 4-5 with William Hill.
In League One I like Queen's Park at 7-5 at home to Stranraer and best bet in League Two are Edinburgh City at 19-10 with Marathonbet at Berwick.
Bets to Consider
Celtic & Btts
Dembele to score
Rangers v Celtic cards 65-85pts
Ross Co v Inverness btts
Hamilton v Motherwell under 2.5 goals
St Mirren v Morton btts