Arsene Wenger was upset with his players after Arsenal's 1-1 draw with Birmingham City.

Everything looked to be going to plan when Emmanuel Adebayor's penalty put Arsenal ahead after 21 minutes after Stephen Taylor was adjudged to have brought down Eduardo from behind.

However, Birmingham were level just after the restart through Garry O'Connor's deflected header following a corner, and the visitors held on under immense late pressure to boost their own confidence of staying in the top flight.

Wenger accepted his side - whose only other failure to win at home in the Premier League came against Manchester United, which ended 2-2 - were below par.

"It was very frustrating," said the Arsenal boss.

"The crowd pushed us on, but we were punished for losing concentration on the set-piece.

"We thought it was going to be too easy, but we didn't create enough overall.

"We were not sharp enough and they defended well. It's as simple as that."

Wenger added: "Every game is important so it's hard to say which is the crucial month, but today we lost two points we shouldn't have lost.

"I'm confident the team will re-focus because they are very disappointed. The focus today wasn't good enough."