Celtic with a free-kick 25 yards out. Charlie Mulgrew strikes it well but Dundee keeper Scott Bain is equal to it and tips the ball round the post. 

The Dons think they've taken the lead at Tannadice as Kenny McLean smacks the ball home but Simon Church is flagged offside.

BBC Sportsound pundit Chick 'Chico' Young is positively purring over Partick Thistle's eye-catching opening half-hour in Perth. 

Two goals to the good and looking hungry for more, according to the bold Chick. Can St Johnstone stem the tide?

The Dons are warming to the task at Tannadice. The galloping Graham Shinnie tries to find Simon Church but is thwarted by some desperate United defending.

Richard Wilson
BBC Scotland at Celtic Park

"Dundee have defended stoutly enough, but not produced any coherent attacks. Celtic have been lively, and Patrick Roberts has impressed in a series of cameos while Leigh Griffiths has looked to shoot at every opportunity, but so far the home side has failed to be incisive or dominant enough to take control of the score line."

Only a fine Alan Mannus save prevents Saints falling further behind as the goalkeeper clings on to Sean Welsh's free-kick attempt for Thistle.

The visitors are swarming all over the hosts like a band of deadly wasps...

We're still waiting on our first goal at Tannadice. As though channeling football fans' frustration up and down the land and roaring "enough of this" - defender Gavin Gunning tests keeper Scott Brown with a drive. 

Come on boys, give us a goal! 

It's the double act again! Patrick Roberts picks out Leigh Griffiths with a little pitching wedge over the water and bunker that's the Dundee defence but Griffiths can't find the net with a volley. 

Patrick Roberts is aiming to strike up an early rapport with Leigh Griffiths, the winger supplies the in-form Celtic striker whose fizzing shot is comfortably saved by Scott Bain.

Martin Dowden
BBC Sport Scotland at McDiarmid Park

"Partick Thistle are rampant here and they're doing it in style. Quality football crucially executed with quality finishing on a pitch you wouldn't expect it on. It's a giant leap for Thistle if they go on from here with tough games on the horizon they may have given themselves some leeway in the run in."

Goalless at Tannadice but Kenny McLean and Peter Pawlett combine to force a corner for the Dons. United clear and try to launch a counter-attack but it fizzles out.  

Callum Booth's second goal in as many games has put Partick Thistle ahead against St Johnstone - the side they beat 2-0 last midweek.

Are the Saints in store for another loss to the Jags?

Image source, SNS

Partick Thistle double their lead in style as Steven Lawless fires a 25-yard howitzer beyond the despairing reach of Alan Mannus.

The first meaningful foray into Celtic territory for Dundee as Rory Loy's run forces Dedryk Boyata into conceding a corner.

Nothing doing, though, from the set piece. It remains goalless at Celtic Park.

Partick Thistle draw first blood at McDiarmid Park. Callum Booth canters up the left-hand side, cuts inside and bends a wonderful shot into the far corner. Pick it out!