Stephen Robinson says getting his players to believe in facts and not fantasy is the key to St Mirren toppling Rangers.
And the Buddies boss has even got the measuring tape out to dispel any myths the Ibrox pitch is much bigger than their own park in Paisley.
The top-six hunting Saints have conjured up some magic results against the Old Firm at home this season, dishing Celtic out their only domestic defeat so far back in September before Rangers rescued a late draw in November through a James Tavernier penalty.
