Reo Hatate and Kyogo Furuhashi scored two goals each as Celtic easily beat St Johnstone to regain a nine-point lead at the summit of the Scottish Premiership.
Kyogo’s close-range double followed Hatate’s opener after a defensive calamity from St Johnstone.
The makeshift full-back bagged his second after the break, before Drey Wright netted a consolation.
Celtic substitute David Turnbull was then sent off late on.
However, the midfielder’s high challenge on Remi Matthews came way too late to make any difference to the outcome as St Johnstone remain fifth.
Celtic were unbeaten in their last 24 meetings with St Johnstone and had the festive fever oozing out in search of a timely 25th.
The surprise parcel in Ange Postecoglou’s starting line-up saw Hatate filling in at right-back due to Anthony Ralston’s injury and Josip Juranovic’s recent World Cup exploits, but he made his presence known promptly.
In much more familiar territory on the edge of the box, he scooped up a slack clearance from Wright and steered it beyond Matthews, with help again from a Wright deflection.
Kyogo believed he nabbed the opener with a nearby nod but Kevin Clancy said Matthews palmed the effort away before it crossed the line. There were no doubts, however, with his first-half, close-range brace.
Matt O’Riley’s flashed cross into the front-post was flicked in before he placed the finishing touch on a frantically fantastic move. Aaron Mooy’s defence-splitting pass into James Forrest was then put on a plate for the Japanese striker to tie the move off with a bow.
Hatate made it four when he latched on to a threaded through pass before sneaking the ball by Matthews. The wait for confirmation, though, was lengthy before an incorrect offside flag was overturned.
Against the grain, Saints pulled one back in impressive fashion. Stevie May’s shot after brilliantly bringing down a lob called Joe Hart into action, with the Celtic goalkeeper allowing Wright a go before gifting him a second bite at the cherry where he made no mistake.
Celtic called in the attacking cavalry on an afternoon wrapped up by Turnbull’s red card for a high boot on Matthews in stoppage time.
Player of the match – Reo Hatate
Celtic pulled a Christmas cracker while St Johnstone snapped – Analysis
Postecoglou noted in midweek that he was not too happy with the performance against Livingston and was in search of a reaction… his side delivered.
Celtic have so many strings to their bow. When required, they can be patient in their play, bide their time in stretching and exhausting their opposition before pouncing – as was the case against Aberdeen last week.
This showing was much more of what the Australian will want to see, as will the fans. There was a zip, a swagger and a confidence among the Celtic ranks. When they’re in that kind of mood, they have total control of the affair.
St Johnstone were up against it from the off. The qualities the hosts decided to dip into would have had many sides battling.
At times, their defending was resolute, and Callum Davidson will surely find comfort that it took for cutely crafted manoeuvres to break them down.
The six-game unbeaten run may have ended, but the Saints’ season certainly won’t be judged on trips to Celtic Park.
What’s next?
Celtic travel to Easter Road to take on Hibernian (20:00 GMT) while St Johnstone welcome Hearts (19:45) on Wednesday.
More to follow.
Player of the match
FuruhashiKyogo Furuhashi
Celtic
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Squad number8Player nameFuruhashi
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Squad number41Player nameHatate
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Squad number42Player nameMcGregor
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Squad number20Player nameCarter-Vickers
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Squad number49Player nameForrest
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Squad number13Player nameMooy
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Squad number33Player nameO’Riley
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Squad number38Player nameMaeda
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Squad number3Player nameTaylor
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Squad number11Player nameAbada
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Squad number4Player nameStarfelt
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Squad number1Player nameHart
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Squad number17Player nameJota
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Squad number7Player nameGiakoumakis
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Squad number9Player nameHaksabanovic
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Squad number14Player nameTurnbull
St Johnstone
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Squad number21Player nameCrawford
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Squad number18Player nameMacPherson
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Squad number7Player nameMay
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Squad number5Player nameMitchell
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Squad number2Player nameBrown
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Squad number6Player nameGordon
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Squad number4Player nameConsidine
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Squad number14Player nameWright
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Squad number1Player nameMatthews
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Squad number23Player nameCarey
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Squad number13Player nameMcGowan
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Squad number37Player nameClark
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Squad number17Player nameBair
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Squad number22Player nameHallberg
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Squad number34Player namePhillips
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Squad number26Player nameMcLennan
Line-ups
Celtic
Formation 4-3-3
- 1Hart
- 41Hatate
- 20Carter-VickersBooked at 33mins
- 4Starfelt
- 3Taylor
- 33O’RileySubstituted forHaksabanovicat 63′minutes
- 42McGregor
- 13MooyBooked at 13minsSubstituted forTurnbullat 79′minutesBooked at 90mins
- 49ForrestSubstituted forAbadaat 62′minutes
- 8FuruhashiSubstituted forGiakoumakisat 68′minutes
- 38MaedaSubstituted forNeves Filipeat 63′minutes
Substitutes
- 6Jenz
- 7Giakoumakis
- 9Haksabanovic
- 11Abada
- 14Turnbull
- 17Neves Filipe
- 25Bernabei
- 31Siegrist
- 50Lawal
St Johnstone
Formation 5-3-2
- 1Matthews
- 14Wright
- 13McGowan
- 6Gordon
- 4Considine
- 2Brown
- 22HallbergSubstituted forMitchellat 62′minutes
- 34PhillipsBooked at 16minsSubstituted forMacPhersonat 62′minutes
- 23CareySubstituted forCrawfordat 79′minutes
- 37ClarkSubstituted forMcLennanat 62′minutes
- 7MaySubstituted forBairat 87′minutes
Substitutes
- 5Mitchell
- 10Wotherspoon
- 11O’Halloran
- 12Parish
- 17Bair
- 18MacPherson
- 21Crawford
- 26McLennan
- 29Murphy
- Referee:
- Kevin Clancy
- Attendance:
- 58,635
Live Text
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Match ends, Celtic 4, St. Johnstone 1.
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Second Half ends, Celtic 4, St. Johnstone 1.
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Attempt missed. Liel Abada (Celtic) right footed shot from the centre of the box is too high. Assisted by Reo Hatate.
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Offside, St. Johnstone. Remi Matthews tries a through ball, but Connor McLennan is caught offside.
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David Turnbull (Celtic) is shown the red card.
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VAR Decision: Card upgraded David Turnbull (Celtic).
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Delay over. They are ready to continue.
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Delay in match because of an injury Remi Matthews (St. Johnstone).
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Foul by David Turnbull (Celtic).
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Remi Matthews (St. Johnstone) wins a free kick in the defensive half.
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Corner, Celtic. Conceded by Drey Wright.
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Liel Abada (Celtic) wins a free kick in the defensive half.
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Foul by Andrew Considine (St. Johnstone).
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Attempt missed. Liel Abada (Celtic) right footed shot from the right side of the box is high and wide to the right. Assisted by David Turnbull.
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Attempt missed. Jota (Celtic) right footed shot from the centre of the box misses to the right. Assisted by Liel Abada.
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Attempt blocked. Jota (Celtic) right footed shot from outside the box is blocked. Assisted by Callum McGregor.
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Attempt missed. Carl Starfelt (Celtic) header from the centre of the box is close, but misses to the right. Assisted by David Turnbull with a cross following a corner.
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Substitution, St. Johnstone. Theo Bair replaces Stevie May.
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Corner, Celtic. Conceded by Remi Matthews.
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Attempt saved. Giorgos Giakoumakis (Celtic) right footed shot from the centre of the box is saved in the centre of the goal. Assisted by Liel Abada.