Big chance for Rangers.

Borna Barisic's corner is flicked off the head of team-mate Filip Helander and Alfredo Morelos can only send his back-post volley high and wide from 12 yards.

Charlie Adam
Former Rangers midfielder on BBC Sportsound

Rangers striker Alfredo Morelos, not for the first time, can't help himself reacting as his legs get tangled between Liam Craig's after he fouls the St Johnstone midfielder.

A bit of shirt pulling and shouting and Morelos goes into the referee's book along with Jason Kerr after the visiting defender also gets involved.

Rangers goalkeeper Allan McGregor leaves it dangerously late to clear from right in front of goal under pressure from striker Stevie May.

Saints' high press continues to cause problems and that could so easily have deflected into goal.

Joe Aribo gets in front of his marker to meet a Borna Barisic cross to the front post, but the Rangers midfielder makes a mess of his attempt at goal.

Stephen Robinson
Former Motherwell manager on BBC Sportsound

Make that two efforts on target for Rangers.

However, Alfredo Morelos' header is never going to have enough power to beat goalkeeper Zander Clark.

One shot on target each at the moment.

Glen Kamara had a shot saved by Saints' Zander Clark, while Scott Tanser had a stunning volley pushed away by Allan McGregor at the other end.

Image source, SNS

For possibly the first time, Rangers get to the by-line and Ryan Kent dinks a cross to the back post, but Ianis Hagi can't get much on his header under pressure.

Ouch!published at 19mins

19mins

Rangers 0-0 St Johnstone

St Johnstone striker Stevie May is down clutching his face.

He seems to have collided with Filip Helander's elbow, but referee Alan Muir decides it was accidental.

Stephen Robinson
Former Motherwell manager on BBC Sportsound

What a strike!

Another corner and Liam Craig finds Scott Tanser lurking on the edge of the penalty box and the full-back's superb volley is pushed away by Rangers goalkeeper Allan McGregor.

Charlie Adam
Former Rangers midfielder on BBC Sportsound

Rangers break immediately from the corner and Glen Kamara's shot is pushed clear off the knees of goalkeeper Zander Clark.

St Johnstone are growing into this game and, when Scott Tanser plays in a dangerous cross, Jason Kerr's powerful drive takes a deflection and the visitors have another corner.

St Johnstone are pressing high up the pitch and have been caught offside a couple of times themselves so far.

Indeed, the visitors win the first corner, but Rangers manage to clear.

These two teams last met in the Scottish Cup in 2009, when Rangers won 2-0, and three players in tonight's line-up featured in that game - home goalkeeper Allan McGregor and Steven Davis along with St Johnstone midfielder Liam Craig.

It's been a sedate start to tonight's game so far.

The game is under way, with Rangers in their traditional light blue and St Johnstone in their yellow change strip.

Which club's dreams of a domestic double will still be alive by the end of the game at Ibrox?

Tom English
BBC Scotland's chief sports writer

Stephen Robinson
Former Motherwell manager on BBC Sportsound