Marks out of 10 after an eventful first half at Tannadice? You can rate the players here.

Joe Chalmers' superb strike sees Inverness CT lead at the break. The visitors could have been further ahead, had Chalmers not been denied by the crossbar.

One minute of added time at the end of the first half.

United will want to regroup at the break and come out all guns blazing in the second half. Nicky Clark sees his shot blocked after Inverness CT fail to properly deal with a long ball into the box.

Aberdeen captain Graeme Shinnie was your man of the match from the draw with Rangers at Pittodrie, scoring an impressive 7.47 on the player rater.

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While Inverness CT look razor-sharp down the flanks, Dundee United have yet to find their feet in an attacking sense.

With eight minutes remaining in the first half, Robbie Neilson will be hoping his side spark into life.

BBC Sportsound pundit John Rankin: I want to see the two Dundee United full-backs higher up the pitch because they are very, very narrow at the moment. They can't get the ball into the striker as a result.

BBC Scotland's Jane Lewis at Tannadice: Dundee Utd manager Robbie Neilson is in and out of his seat in the dugout - at times very animated on the touchline. He looks to be telling his players to keep the ball on the deck. His opposite number John Robertson hasn't taken a seat yet and is being just as vocal...

Inverness CT's bearded assassin Joe Chalmers has proved lethal in the opening half-hour against Dundee United. Chalmers hasn't given United's defence a moment's peace: scoring a contender for goal of the round and denied a second by the crossbar.

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Dundee United's response? Fraser Fyvie, who has looked dangerous for the hosts, sees his goalbound effort blocked by Carl Tremarco.

"That's Carl's bread and butter," purrs BBC Sportsound pundit John Hughes in appreciation of the crucial block.

BBC Sportsound pundit John Rankin: Aaron Doran, for me, is the difference so far. Every time he gets the ball he's positive and tries to take someone on.

Joe Chalmers is proving a real thorn in Dundee United's side. The goalscorer ghosts in behind United's defence but sees his shot cannon back off the bar, much to United's relief, from Aaron Doran's superb cross.

The woodwork comes between Chalmers and a second Inverness goal.

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BBC Sportsound pundit John Rankin: Jamie Robson needs to deal with Joe Chalmers, he's got it wrong by letting him on his stronger side. It's a great finish.

Rangers manager Steven Gerrard gave his reaction to Premier Sport: "I think it’s probably fair in the end. Aberdeen were better first half, they turned it into a match full of competing, a bit of a war. I was disappointed at half-time and I asked for a reaction. Credit to the players second half, it was much better. I thought it was the least we deserved."

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Gerrardwas also unhappy with the state of the Pittodrie pitch: "Aberdeen trained on the pitch yesterday and it hadn’t been rolled, it hadn’t been cut, it was windy, there was a lot of ball in the air. And Aberdeen are really effective at turning games physical. Second half we matched them more.

"Now we've got a full Ibrox [for the replay], I'm sure they'll be behind us, we've got a better pitch, a bigger pitch and hopefully we can play more like Rangers next time."

Inverness CT boss John Robertson, deep in tactical thought on the touchline, will be the happier of the two managers.

His side are causing Robbie Neilson's troops all sorts of problems, but it remains goalless.

With Dundee United goalkeeper Benjamin Siegrist way off his line, Inverness CT's Liam Polworth can't capitalise with an attempted chip.