Gallacher then claimed substitute Steven Milne's cross as Deuchar waited to pounce.

BBC: Kevin Moon and Billy Mehmet

Jennison Myrie-Williams earned a start for St Johnstone in place of the injured Murray Davidson, while Marcus Haber, Peter MacDonald and Steven Milne came in for Collin Samuel, Sam Parkin and Andy Jackson.

BBC: Emilio Izaguirre

McInnes freshened up his side after the midweek Co-operative Insurance Cup defeat, Jennison Myrie-Williams coming in for the injured Murray Davidson, while Marcus Haber, Peter MacDonald and Steven Milne came in for Collin Samuel, Sam Parkin and Andy Jackson.

BBC: Saints boss McInnes unhappy with basic defensive errors