The Dons came out fighting at the start of the second half and took the lead in the 49th minute. DAVID ROWSON collected the ball 25 yards out before inching forward, side-stepping a defender and striking a great low shot past Alan Main. St Johnstone came close when an attempted clearence rebounded off Phil Scott and Dons keeper Jim Leighton was happy to see the ball go just wide of the post.
Aberdeen ought to have increased their lead in the 70th minute but Stephen Glass could only find the sidenetting from the edge of the box.
With less than ten minutes left, Saints levelled when substitute RODDY GRANT headed home a free kick.