Mark Warburton admitted his sloppy Rangers let an opportunity slip through their grasp as they blew the chance to go level on points with second-placed Aberdeen.
It was just 13 months ago St Johnstone went to Ibrox and knocked Rangers out of the League Cup, winning 3-1.
Marcus Haber can fire Dundee off the foot of the Premiership table.
Summer signing James Vincent has vowed he and his team-mates must cut out the errors that are proving costly to Dundee.
St Johnstone defender Tam Scobbie will begin his comeback from injury in tonight’s U/20 game against Rangers at Stirling Albion’s Forthbank (7pm).
Dundee’s new signing Marcus Haber is confident his knowledge of being involved with teams near the bottom of the league will hold him in good stead to help Dundee move away from the foot of the table.
Dundee were left rooted to the foot of the Ladbrokes Premiership as they were eased aside 2-1 by Tayside rivals St Johnstone.
Tommy Wright insisted it would have been a "travesty" had his St Johnstone side not held on for their win against Dundee.
Dundee boss Paul Hartley is looking for a more clinical performance from his team when they make the short trip to face St Johnstone today.
The return of Darren O’Dea to the Dundee side does not necessarily mean Kosta Gadzhalov will be the man to make way in the starting XI at St Johnstone on Sunday.
St Johnstone have drawn away to Hamilton and beaten Ross County away in their last two fixtures.
Goalkeeper Zander Clark is St Johnstone’s Player of the Month for September.
St Johnstone boss Tommy Wright has praised his club’s travelling support.
Danny Swanson believes St Johnstone showed they have quality all over the pitch against Ross County as they secured another impressive win on the road.
St Johnstone manager Tommy Wright pulled off a great stroke of business when he managed to persuade Joe Shaughnessy to sign in the summer of last year.
Paul Paton is “absolutely delighted” at the way his move to St Johnstone has worked out.
St Johnstone defender Keith Watson has had an injury-hit time since joining from St Mirren in the summer.
St Johnstone team boss Tommy Wright has praised young defenders Aaron Comrie and Liam Gordon for stepping up to first-team duty and doing well.
St Johnstone will be minus four players for tonight’s away Betfred Cup quarter-final tie against Aberdeen.
Scotland manager Gordon Strachan was at the St Johnstone-Hearts game and must have been impressed with Saints’ young keeper Zander Clark.