Kenneth Vargas rattles the far post, a mid-air swipe after a well delivered ball from the right by Alan Forrest.

Hearts' goal seems to have given them a fresh impetus after being on the back foot for much of the second half.

Kheredine Idessane
BBC Scotland at Celtic Park

Kilmarnock have been right at it in this second half, and have just enjoyed their best spell.

A cracking Joe Hart save from Liam Donnelly's point-blank header has kept Celtic ahead.

The wind has really gone out of the home side's sails in this second period, with Yang, Bernabei, Kuhn and Bernardo all now on and hoping to help get the second goal.

Joe Hart denies Liam Donnelly for a second time with a fine save.

Danny Armstrong sends an inswinging free-kick into the Celtic penalty box and, when the midfielder rises above the home defence, the former England goalkeeper has to beat away the powerful header over the crossbar to keep the hosts ahead.

Joe Newell does brilliantly down the left after Jordan Obita clips a through ball forward to his captain.

Newell gets to the bye-line and finds Emiliano Marcondes, who powers his finish in from close range.

Newell and Obita are both possibly offside. It's tight, I tell ya.

Martin Dowden
BBC Sport Scotland at Tony Macaroni Arena

St Mirren are probing here, desperate to get back on level terms and you can just sense Livingston dropping ever deeper trying to protect this vital lead.

It's absolutely crucial that they hang on to this and put pressure on Ross County above them.

Kenny Crawford
BBC Sport Scotland at Falkirk Stadium

Ahkeem Rose has led the line brilliantly for Accies, and his second goal - a well-taken back post header - has put Falkirk on the ropes.

Celtic are so nearly gifted a second goal by a moment of hesitation inside the Kilmarnock penalty box.

Goalkeeper Will Dennis and one of his defenders leave the ball to one another as Daizen Maeda lurks behind them, but the Japan midfielder is unable to take advantage before it's cleared.

Despite being on the back foot for much of this second half so far, Livingston look to try and create something.

Tete Yengi looks like he's about to break away but is closed down by about four St Mirren players as he tries to race through on goal.

Livingston eventually get the ball into the St Mirren box but the visitors defend it well.

Hearts with the best chance of the game to score so far - twice!Firstly Lawrence Shankland attempts a forward scissor kick, which edges past the Motherwell goal but falls kindly for Alan Forrest at the other end of the box.Forrest controls, turns and shoots, forcing Liam Kelly to tip it just behind him - but the ball falls less kindly for Shankland this time and his attempt is behind.

Duk goes down on the edge of the box. David Munro doesn't think it's a foul and Duk writhes in frustration.

Play goes on and Graeme Shinnie crunches Lewis Miller. It's a booking for the Aberdeen skipper.

Luke McCowan unleashes a thunderous drive from close to 30 yards out, and it flies just wide.

Serious venom in that one.

Jane Lewis
BBC Scotland

The visitors have started the second half well, as Yan Dhanda forced Trevor Carson in to making an early save, and they look dangerous when they break forward.

Dundee's defence is being tested but is holding up well... so far.

Now then, what will VAR David Dickinson make of this?

Nectarios Triantis fails to cut out a ball over the top. The ball bounces between Bojan Miovski and David Marshall, with the goalkeeper trying to punch the ball.

Instead, he swings an unbelievable hook on to Miovski's jaw. We'll see what happens here...

Play on. It's an Aberdeen corner.

More intricate passing takes Celtic into the Kilmarnock penalty box.

However, the hosts fail to increase their lead thanks to a fine diving stop from Will Dennis from Matt O'Riley's side-footed drive.

That's the second time the Denmark midfielder has been denied by the Kilmarnock goalkeeper in this game.