Arsenal 2 Birmingham 1: Full time report
Arsenal got their Barclays Premier League campaign back on track with a hard-fought 2-1 win over Birmingham - but had Jack Wilshere sent off in stoppage time for a rash challenge.
The Blues took a shock lead through Nikola Zigic after 33 minutes as once again the Gunners - who had lost their past two league games before the international break - failed to make the most of early possession.
However, Samir Nasri levelled with a somewhat controversial penalty just before half-time, before Marouane Chamakh slotted home a well-taken effort two minutes after the restart which proved enough for all three points.
The win was soured late on, however, when England teenager Wilshere showed his immaturity with a reckless challenge on Zigic which earned him a straight red and a three-match ban.
Defeat at Chelsea last time out had left Arsenal some seven points off the pace, and manager Arsene Wenger had called on his team to produce a strong response from kick-off.
It was almost that as Chamakh went close after just four minutes following a neat one-two with Wilshere on the edge of Birmingham's box, but Stephen Carr blocked his side-foot effort.
Arsenal suffered a shock 3-2 defeat against West Brom in their previous match here last month - and there was more frustration for the home supporters during the first quarter-of-an-hour following some resolute defending by Birmingham.
On 17 minutes, Sebastien Squillaci headed in Samir Nasri's chipped free-kick from the right wing, but the offside flag was quickly up.
Arsenal were presented another golden opportunity on 24 minutes when a soft back pass from former Arsenal midfielder Sebastian Larsson in his own penalty area gifted Gael Clichy a free shot at goal from 10 yards, but the full-back dragged his shot wide of the far post.
Gunners goalkeeper Lukasz Fabianski had not really been troubled, but needed to be alert to collect an inadvertent backward header from Emmanuel Eboue, which was set for the top corner, after a free-kick into the Arsenal box.
The Blues, however, continued to look dangerous from set-pieces and it was no real surprise when the visitors went ahead after 33 minutes.