Ouch!published at 15:06
Oh dear, that looks really sore... Mikael Lustig and Juwon Oshaniwa slide into a challenge and their knees clash together. Both men will need a spot of treatement.
Nir Bitton scores after Blazej Augustyn error
Sam Nicholson levels with volleyed finish
Tom Rogic curls in a shot from the 18 yards
Sow makes it 2-2 with late shot from distance
Celtic move one point clear at the top
Colin Moffat
Oh dear, that looks really sore... Mikael Lustig and Juwon Oshaniwa slide into a challenge and their knees clash together. Both men will need a spot of treatement.
We're up and running again and within 30 seconds Celtic striker Nadir Ciftci steals the ball from Blazej Augustyn and hammers in a low shot. Neil Alexander has to look very lively to get down and get a hand behind it.
Chris McLaughlin
BBC Sport Scotland at Tynecastle
"Both teams head up the tunnel all square after a completely captivating first half. The pendulum has continued to swing from one end of the pitch to the other and with it came two fabulous finishes. Celtic looked spooked after losing Armstrong and Boyata and that gave the home side some real belief. Nothing quite beats Tyncastle when it rocks and it certainly rocked in the first period. What a second half we have in store. Prediction? No chance!"
Chris McLaughlin
BBC Sport Scotland at Tynecastle
"Tynecastle erupts and rightly so. Take a bow Sam Nicolson - a fabulous finish on the volley. What a game we have now. Dreadful mistake from Augustyn to let Nir Bitton in for the opener."
Hearts level in first-half stoppage-time! Prince Buaben lifts the ball into the danger area from the right and in comes Sam Nicholson, who just wants it more than defender Mikael Lustig, as he flicks the ball high into the net to send Tynecastle wild.
Hearts are caught out with too many bodies up the park as Blazej Augustyn makes a mess of an attempted clearance and Morgaro Gomis can't mop up properly. Nir Bitton is sent through on goal by a clever header from Callum McGregor. The tall Israel midfielder is coolness personified as he slides a low shot beyond Neil Alexander and into the corner.
Gavin Reilly is making the most of his starting opportunity for Hearts as he swings in a dangerous, looping cross from the right. A sliding Sam Nicholson meets it at the back post but cannot steer his effort on target.
Efe Ambrose is on for the injured Dedryk Boyata and is quickly shown a clean pair of heels by Gavin Reilly. The Hearts striker pings in a low, angled shot and it needs another good, diving stop from Craig Gordon to keep it out.
Craig Gordon take a bow! Arnaud Djoum knocks a low ball across the face of goal, a sliding Gavin Reilly is inches away from connecting before Prince Buaben does. The ball is speeding in at the post but the Celtic keeper is somehow able to reach behind himself and claw it out.
Hearts are probing for an opening as Celtic continue with 10 men for now but the home side are maybe in too much of a hurry and are struggling to retain possession.
Celtic defender Dedryk Boyata has pulled up with what looks like a hamstring problem. He might be done...
Hearts forward Gavin Reilly runs on to a long, raking pass out of defence and he's able to prod it beyond the advancing Craig Gordon but he started from an offside position and play is brought to a halt.