Szczesny and defender Laurent Koscielny went for the same ball from Nikola Zigic's long pass and the ball landed at the feet of Martin, who slid it into the net.

Zigic had exploited defensive frailties to head Birmingham in front in the 28th minute, but Robin van Persie volleyed Arsenal level 11 minutes later.

Birmingham's victory left Arsenal searching for its first trophy since the 2005 FA Cup.
Birmingham won the 1963 League Cup final.