Now it's United's turn to threaten as Marc McNulty gets the better of Jason Kerr, but the striker can only get the merest of touches on the bouncing ball in front of goal and goalkeeper Trevor Carson gathers.

Kerr recovers to make a solid block moments later.

It's young defender Liam Smith to the rescue for Dundee United as he slides to make a crucial block to deny Chris Kane.

Billy Dodds
Former Scotland striker on BBC Sportsound

No mistake this time from Alfredo Morelos.

County midfielder Jordan Tillson's awful clearance from a Calvin Bassey cross goes straight to Glen Kamara and the Finn feeds Morelos for a sclaffed finish by the Colombia striker into the far corner.

Image source, BBC Sport

Big let-off for County.

Steven Davis wins possession and releases striker Alfredo Morelos, whose drive from 10 yards flies wide.

Ice cold from Liam Boyce.

The Northern Ireland striker drills it down the middle with Joe Lewis diving to his left.

Image source, BBC Sport

Hearts winger Gary Mackay-Steven is caught by centre-half Declan Gallagher.

Liam Boyce steps up...

Gary Mackay-Steven, oh dear.

Scott Brown makes a hash of a clearance and Aberdeen keeper Joe Lewis flaps at the attempted catch.

The ball lands to Hearts winger Mackay-Steven, he has the whole goal to aim at but scuffs his finish wide.

Can someone check if Hearts midfielder Beni Baningime has velcro on his boots?

This guy just doesn't lose the ball.

Connor Randall is booked for clattering Rangers' Calvin Bassey on the edge of County's box.

It's prime position for a fee-kick, but Romania midfielder Ianis Hagi fires wastefully high and the hosts survive.

Shouts for an Aberdeen penalty as Peter Haring scuffs Calvin Ramsay's cross onto his own arm.

Would have been so, so harsh, but the handball rule is a bit mental these days.

Hearts winger Josh Ginnelly is the first to have a pop in the second half as he tries his luck from range.

Joe Lewis gathers easily, though, in the Aberdeen goal.

Half-time change for the Dons as midfielder Dean Campbell comes on to replace Jonny Hayes.

All three games remain in the balance as the whistles go at the three Premiership grounds.

If it stays like this, it will be very tight at the top with three sides tied on seven points from three games.

Michael Stewart
Former Hearts midfielder on BBC Sportsound

Billy Dodds
Former Scotland striker on BBC Sportsound

Tyrone Smith
BBC Scotland at McDiarmid Park

No goals at the break in Perth, but a decent game nonetheless.

Very little between the sides and perhaps that is not too surprising when you consider that the two teams contested four draws in their four encounters last term.

As the half wore on, the chances dried up a bit, but the endeavour didn't and some pretty tasty challenges in the midfield engine room summed up the nature of this game.

A first half of diminishing returns. A high-quality start followed by a scrappy finish.

Very keenly contested, though, so let's see what the second-half brings.

Image source, SNS

St Johnstone are crying for a penalty here as Charlie Mulgrew jumps into the back of Chris Kane in the box. The United captain was challenging for the ball, but he got nowhere near it. Not given.

Rangers were absolutely cruising after quickfire goals from Joe Aribo and Connor Goldson in a flying start.

But Harry Clarke's strike has given County hope for the second half.

Image source, sns