The Blues had the chance to maintain their 100-per-cent winning start to the League One season when Gassan Ahadme was fouled in the penalty box 14 minutes from time.
However, substitute Shaun Williams failed to make the most of his chance from the spot as keeper Pontus Dahlberg saved his tame effort.
13. Michael Jacobs - 6
(Replaced Reeco Hackett-Fairchild on 62 minutes): Brought moments of quality as usual.
Photo: JPIMedia
14. George Hirst - 6
(Replaced John Marquis on 74 minutes): Grafted away but not time to have a real influence.
Photo: JPIMedia