Dundee started well and had a lot of the ball but failed to create anything clear cut. Niall McGinn had a shot that hit the side netting.
Partick looked dangerous on the break. They opened the scoring on 16 minutes Dundee gave the ball away in midfield and Thistle played a quick one two for Fitzspartick to score from 20 yards. Dundee attacked next and Mulligan had a shot well saved by the Jags keeper.
But it was 2-0 soon after when mistakes in the Dundee defence led for Brannigan to score. the ball should have been cleared first time.
Second half was only 5 minutes old when it was 3-0 slack defensive play let the unmarked Lawless to head home to the delight of the away fans.
But on 64 minutes Dundee scored from a corner when Cammy Kerr headed home. At least it give us some hope for the last 26 minutes. Josh Mulligan then had a great chance but put his shot over the bar it really should have been on target.
Ryan Sweeney hit the post with a header so unlucky not to score. Dundee battled away and scored again with 6 minutes left, Tyler French headed home from a McMullen corner.
Dundee kept at it but failed to score again they did have a few half chances but the ball would not fall.
Partick deserved the three points Dundee need to sort out the errors which cost them today.
Dundee: Sharp, Kerr, Sweeney (c), French, Marshall, Byrne (Robertson 75), Anderson (Robinson 75)
Mulligan, Williamson (McMullan 26), McGinn (Rudden at half time), Jakubiak. Unused Subs: Lawlor (gk), Ashcroft, McCowan, Cameron, Fisher.
Referee: Alan Muir
Att: 5,513
