United dominated possession from the first whistle and it was one-way traffic towards the home goal.
Fletcher had a shot blocked, at the expense of a corner. Then Paul Scholes from in space 20 yards out and Rooney headed wide from a Fletcher centre. McFadden brought down Scholes 25 yards out but Valencia's free-kick was charged down by Lee Bowyer. Park Ji-Sung had an opportunity when running onto a Fletcher through-ball but he lost his balance when under pressure from Carr.
But after 39 minutes Birmingham stunned United by taking the lead in their first worthwhile attack from Jerome. He forced a corner when his shot was blocked by Scholes. United failed to deal with McFadden's centre, Bowyer headed the ball back across goal and it bounced off Johnny Evans to Jerome, who applied the finishing touch for his fifth goal of the campaign.
United finally drew level after 63 minutes through an own goal from Dann. The central defender was under pressure from Park when he turned a low centre from Evra past Hart.
Hart held onto a low Valencia drive and Scholes fired over the bar as United searched for the winner. But they couldn't break thru the blue defence.
