Manager Jim McIntyre made one change from the team that drew with Livingston on Boxing Day. Martin Woods returning in the place of Benjamin Källman who was on the bench.
St Johnstone scored in the first minute a very poor goal to lose Tanser had space and time and his chip cross left Jack Hamilton helpless. After this St Johnstone were well on top and Dundee took ages to get into the game. In the last ten minutes of the half Jesse Curran had a shot saved by the saints keeper.
As half-time approached Calvin Miller had a shot which went across the goal and wide of the far post.
Glen Kamara was replaced at half time by Benjamin Källman as Dundee turned to a straightforward 4-4-2. Dundee started the second half but could not keep the ball. St Johnstone were in total control and they forced Dundee keeper Jack Hamilton to make some good saves.
On 58 minutes the game was finished as Liam Craig got the second goal the visitors deserved, they played a short corner and Watt flicked his header on for Craig who smashed his shot home a the far post.
Benjamin Källman had a header saved by Clarke which was Dundee's only chance near the end.
A poor performance from Dundee and hopefully they can change some of the players in the transfer window. They need to freshen up the squad and move on some of the dead wood.
It was too easy for St Johnstone and they fully deserved the win it could have been more than 2-0.
Dundee: Hamilton, Kerr, Boyle, O’Dea, Ralph, Curran, Kamara (Källman at half time), Woods, Calvin Miller (Nabi 63), McGowan,Kenny Miller (c). Unused Subs: Parish, Inniss, Spence, Moore, Lambert.
Att: 6,868.
Ref: Don Robertson.