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Celtic defeat prevents them going top
Celtic's Idah has early penalty saved then Yang sent off for high boot on Cochrane following VAR intervention
Grant nets penalty awarded for Iwata handball & Shankland has goal ruled offside before sweeping in second
Hearts 1-0 Celtic
Allan Preston
Former Hearts defender on BBC Sportsound
Can Steven Naismith become the second manager to beat Brendan Rodgers twice this season? Derek McInnes has done it with Kilmarnock.
Hearts 1-0 Celtic
Here we go for the second half.
Ten-man Celtic have sent on Kyogo, with Paulo Bernardo withdrawn.
HT: Hearts 1-0 Celtic
This is the handball incident that led to the Hearts penalty.
Tough to judge on one image, of course.
Don Robertson had a good look on the screen before making up his mind.
Image source, SNSThe ball strikes Tomoki Iwata's arm. Penalty? Apparently so.
HT: Hearts 1-0 Celtic
Injured Hearts defender Frankie Kent has time for a quick word with BBC Radio Scotland.
"We're playing well, we're in control, we just need to keep being aggressive," he says.
"Celtic have got nothing to lose now, so we need to stay concentrated."
HT: Hearts 1-0 Celtic
Allan Preston
Former Hearts midfielder on BBC Sportsound
This where you really see the loss of Callum McGregor. He would be sorting Celtic out, driving them on.
HT: Hearts 1-0 Celtic
Here's a stat for you - Don Robertson has given four red cards in 13 Scottish Premiership games this season, no referee has given more.
Image source, SNSYang is shown red by referee Don Robertson after his high boot caught Alex Cochrane
HT: Hearts 1-0 Celtic
Allan Preston
Former St Johnstone defender on BBC Sportsound
If that goes 2-0, this place is rocking. Now it's gone quiet. Hearts fans need to realise they're ahead and have played very well.
Equally, Celtic could have scored their penalty kick. It's been a brilliant 53 minutes.
Hearts 1-0 Celtic
Pat Bonner
Former Celtic goalkeeper on BBC Sportsound
Big let off for Celtic which keeps them in the game, and it will give them a boost.
Any bets there will be a few more VAR situations in this game?
Hearts have the lead and there is steam coming off the VAR monitor after an eventful first half at Tynecastle.
Zander Clark saved a penalty from Adam Idah, then Yang Hyun-Jun had a yellow card for a high boot upgraded to red.
The second penalty award came after a check on a Tomoki Iwata handball and Jorge Grant tucked it away nicely.
Hearts thought they'd scored again when Lawrence Shankland found the bottom corner, but a tight offside decision went against the striker.
Image source, SNSJorge Grant celebrates his cool penalty finish
Hearts 1-0 Celtic
A reprieve for Celtic and Tomoki Iwata as Lawrence Shankland is ruled offside after a lengthy check.
Alan Forrest really should have played the striker in earlier.
Lawrence Shankland
A dozy Tomoki Iwata is robbed by Beni Baningime near the halfway line and Alan Forrest races forward to tee up Lawrence Shankland.
The striker drills it home, hard and low.
VAR is drawing up some of those offside lines though...
Hearts 1-0 Celtic
We're well into six minutes of added time before the interval.
Hearts 1-0 Celtic
Pat Bonner
Former Celtic goalkeeper on BBC Sportsound
Joe Hart would have studied every Shankland penalty this season, so maybe the right decision to change the penalty taker. It's an incredible twist in this game.
Hearts 1-0 Celtic
Allan Preston
Former Hearts midfielder on BBC Sportsound
It shows you that Grant is the designated penalty taker when Shankland plays.
Joe Hart is into the crowd. I don't know what he's doing.
Jorge Grant (pen)
It's a surprise to see Jorge Grant step up rather than Lawrence Shankland but the midfielder drills the ball low into the corner, with Joe Hart diving off in the other direction.
Hearts 0-0 Celtic
He's given it!
Tomoki Iwata's arm is outstretched, although he has no idea where the ball is.
Hearts 0-0 Celtic
Referee Don Robertson is off to the monitor again...
Hearts 0-0 Celtic
It appears we have a VAR check on a possible handball against Tomoki Iwata.
Hearts 0-0 Celtic
Liam Scales slides in to make a vital near post block just as Lawrence Shankland shapes to shoot. Soon after, Cameron Carter-Vickers steps in to make another good interception.
Hearts 0-0 Celtic
Another Celtic corner and this one falls to Tomoki Iwata, who was just clutching his ankle in some discomfort, so it's no real surprise to see him shank the ball out of play.