One of four added minutes played in Perth.

Ruari Paton is presented with a chance, well a half-chance, following Matty Todd's industry but can only shoot at Sam Johnstone.

Shim Mhueka gets into a dangerous area following a Celtic throw and gets the ball out his feet but St Johnstone do well to clear.

The Rangers players have just exited the pitch.

Fans of rival clubs will undoubtedly poke fun at the extent of those celebrations, but it feels like a massive win for Derek McInnes and his team.

The mood music is very different now with a double-header against Celtic next up.

Image source, SNS

Camilo Duran gets in amongst things with an intelligent pass down the right to receive Colby Donvan's pass and eventually get in a cross.

St Johnstone clear but are running out of time.

The celebrations at Ibrox go on.

The entire squad are lined up, applauding a bouncing ultras section.

Nicolas Raskin is kicking about with a camera.

Shim Mheuka's first contribution is to win Celtic a valuable free-kick in the centre circle.

Macaulay Tait replaces Joel Cotteril for St Johnstone.

Kasper Hogh and Liam Scales, who was just booked, make way for Celtic and on come Shim Mheuka and Kieran Tierney.

There are at least five or six Rangers players around Bojan Miovski treating him like a king.

Goalkeeper Ivor Pandur is holding him in the air. Derek McInnes is whipping up the crowd.

Five minutes plus stoppages to go in Perth.

St Johnstone are still in this and are throwing players forward.

And Toby Steward denies Celtic again, this time blocking Benjamin Nygren. Terrific stuff from the Saints stopper.

Image source, SNS

Suddenly, everything is OK again at Rangers...

A late, late Bojan Miovski goal is a sickener for St Mirren.

Kasper Hogh is found by Benjamin Nygren and it's a great chance.

The shot comes in and goalkeeper Toby Steward diverts out for a corner.

We're only just out of the first week in September and already this feels like a huge night in the title race.

The Rangers fans are belting out Penny Arcade and Derek McInnes is apparently clapping along.

Sam Johnstone continues in goal for Celtic for now.

Celtic goalkeeper Sam Johnstone is getting a bit of treatment in Perth.

Cramp or maybe a muscle pull? Viljami Sinisalo is warming up.

Bojan Miovski and Derek McInnes have a huge cuddle amid wild celebrations at Ibrox.

They are going to claim three points here. Surely.

So close for St Johnstone.

Enes Alic lines up a shot from around 30 yards out and smacks it just wide of the right-hand post.

As often is the case, that raft of changes has disrupted the flow of this game.

Plenty of fresh legs on but lots of tired ones too.