Jay Stansfield finally broke Town’s admirable resistance in the 58th minute but Jon Brady's men refused to be beaten and kept going, striking right at the death to stun St Andrews. Here are our player ratings from the West Midlands….
5. Akin Odimayo
He defended superbly, both when out wide at wing-back and then again in the middle after moving to centre-half due to the injuries. Anderson gave him constant problems but he kept coming up with answers. His best game of the season... 8 Photo: Pete Norton
6. Nest Guinness-Walker
Back to his normal high standards. He and Laird had a personal duel down the left side and although Birmingham's attacking full-back threatened, his crosses were often blocked and cut out. He's very calm and cool on the ball in his own half, almost overly so at times... 7.5 Photo: Pete Norton
7. Ben Fox
He looked exhausted when he came off and understandably so. Emptied the tank with an incredibly hard-working, relentless running display in midfield. Disrupted Birmingham's flow and constantly shuffled from side to side to prevent them playing through the middle... 7.5 Photo: Pete Norton
8. Cameron McGeehan
He's an extremely useful player to have in games like this because he covers so much ground. He was up and down and side to side from minute one to minute 97, constantly chasing after Blue shirts. Suspended for next week though after picking up his fifth yellow card... 7.5 Photo: Pete Norton