St Johnstone were comfortbale winners as they ended the Challenge Cup hopes of Third Division Queen's Park.
The First Division side spurned several chances before Jason Scotland expertly lobbed goalkeeper Mark Cairns for the opener after 19 minutes.
Peter MacDonald's first goal in a year put Saints further ahead and Scotland added his second for his team's third.
Queens could have got one back through David Weatherston but his second-half effort went narrowly wide.
St Johnstone: Cuthbert, Lawrie, Dyer, Mensing, Anderson, James, Stevenson, Sheerin, MacDonald (O'Donnell 82), Scotland (Jackson 72), Stanic (Moon 79).
Subs Not Used: Halliwell, Coyle.
Goals: Scotland 19, MacDonald 38, Scotland 59.
Queens Park: Cairns, Paton, Dunlop, Agostini, Reilly, Canning, Kettlewell (Quinn 82), Weatherston, Ronald (Trouten 63), Dunn (Bowers 52), Ferry.
Subs Not Used: Crawford, Whelan.
Ref: E Smith (Scotland).
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