We'll have St Johnstone manager Tommy Wright's thoughts on the quarter-final on the website as soon as possible. I'll call it a day here and thank you, once again, for joining me and for contributing through Twitter, texts and Facebook. All the best.

We're hearing from Ibrox that goalkeeper Steve Simonsen has been taken to hospital to check on his shoulder injury. It looked like he had bumped his head against the post. Certainly he hit the upright with considerable force. Our best wishes to the keeper.

Of course, should Celtic manage to get through against Partick Thistle tomorrow night, it sets up the possibility of an Old Firm semi-final.

Image source, SNS

Lewis Macleod celebrates his headed goal for Rangers that puts his team into the last four of the Scottish League Cup.

We're just waiting to speak to St Johnstone manager Tommy Wright at Ibrox. As you may be aware, we won't have any reaction to the match from Rangers boss Ally McCoist. He is continuing his policy of not speaking to the BBC.

Ross Armour: "Great victory for #Rangers in the Scottish League Cup over St Johnstone. Things looking up right now. In Ally we trust #bbcscotfootball."

We'll have highlights of tonight's match on the BBC Sport website later this evening.

BBC Scotland football pundit Willie Miller

"It's goals that are missing for St Johnstone. The two strikers played well enough. O'Halloran's pace was electric, [but] you were guaranteed goals with Steven MacLean and Stevie May."

BBC Scotland reporter Richard Wilson

"If this Rangers team were to be transplanted into the Premiership they'd be mid-table, top six. They would be some way short of being title contenders."

So, Rangers are the first team into the League Cup semi-finals. The three other quarter-finals take place tomorrow. Aberdeen are at home to Hamilton, Celtic welcome Partick Thistle and Hibs host Dundee United.

BBC Scotland football pundit Willie Miller

"I don't think it was a game of real quality. There was plenty of enthusiasm. The goal was a good header."

Joel McCroy Oblates: "#bbcscotfootball Rangers, so terrible tonight. They got no bearing and direction."

St Johnstone just cannot get hold of the ball. It's so frustrating for the men from Perth. Rangers are almost through.

Image source, SNS

Midfielder Lewis Macleod scores for Rangers in the closing minutes of the match.

Kenny Miller's first touch lets him down as he takes an incisive ball from Lee Wallace, allowing Alan Mannus to come off his line to repel the danger.

There will be six minutes of injury time.

James McFadden comes on for Lee Croft as Saints try to conjure a leveller. Rangers replace midfielder Fraser Aird with the more defensive Stevie Smith.

How can St Johnstone respond? There are two minutes of regular time to go plus a good chunk of injury time. Meanwhile, Ian Black cracks a shot at goal and Alan Mannus tips over.

Fraser Aird swings in a cross from the left, midway down the left flank, and Lewis Macleod rises between the Saints defenders to glance a header into the net. The Rangers fans in the crowd of 13,023 celebrate and begin to dream of a League Cup semi-final.