Frazer Wright, Michael O'Halloran and Brian Graham all came into the team, with Lee Croft dropping to the bench.Dundee were also forced into a change, Ferry replacing Peter MacDonald after the former Saints striker was ruled out with a knee knock.On-loan Dundee United striker Graham sent a diving header wide from an early corner but Dundee soon took control.Ferry blasted high and wide after a poor clearance from Frazer Wright but they could not capitalise on their superiority by creating clear chances.But the breakthrough came in the 26th minute following a set-piece.A Roberts corner was headed back and forth across the box until McAlister headed it back into the goalmouth
Harkins attempted to hook a leg on to the looping ball but Konrad got there before him to steer a header into the far corner.Harkins fired a first-time shot over from 18 yards as Dundee tried to build on their lead and they comfortably survived a brief spell of home pressure before McAlister saw a shot deflected wide after good wing play from Roberts.The visitors remained on top after the restart and good skill from Harkins set up Greg Stewart - but the lively striker's shot was blocked.Referee Willie Collum pulled play back for a late tackle on Harkins and the midfielder's free-kick was pushed away by Alan Mannus.St Johnstone soon lost Scott Brown to injury but the introduction of Simon Lappin failed to turn the tide and Paul McGowan had a shot saved from a tight angle.The Championship winners continued to look comfortable with the home side only managing a few long-range efforts which failed to trouble Letheren, and some well-defended crosses.Stewart and Harkins relieved the pressure at times with some enterprising runs and substitute Luka Tankulic headed on to the roof of the net as Dundee saw out the closing stages in the St Johnstone half
Source : PA
Source: PA