Arsene Wenger says Arsenal's lack of focus just after the break and poor refereeing saw the Gunners lose two points against Hull City on Saturday.
Steve Bruce's side were denied a win at the Emirates as Danny Welbeck's late strike saw the north London club settle for a 2-2 draw. Mohamed Diame equalised for the Tigers and the Senegalese midfielder fouled Mathieu Flamini just before putting the ball behind the net.
Abel Hernandez gave Hull the lead as defensive errors saw Arsenal concede a cheap goal in the 46th minute. The Gunners had Per Mertesacker as the only recognised centre-back in the squad as Laurent Koscielny is out on the sidelines with injury and Calum Chambers is facing his one match suspension.
The World Cup winning defender was joined by Nacho Monreal in the heart of back four. Arsenal had majority of the possession and Wenger believes his side deserved to win their latest fixture.
"I think so [we did enough to win]. It was a disappointing afternoon because we got a point but we had 80 per cent possession. It is a very disappointing result," Arsenal's official website quoted Wenger as saying.
"We were unlucky with the referee on the first goal but on the second goal we can only blame ourselves. We came out of the dressing room with a lack of focus and gave them the lead straight away."
"It was difficult. I cannot fault the effort or the heart that we had in the game. The defensive concentration was missing on the second goal and when you make it difficult at that level you cannot give the goals away like that."
"We know that - we have enough experience to know that and we cannot give a goal away like we did. They had two shots on goal in the whole game."
"If you watch the game again you will be surprised that we played better than the result indicates. Even in the last five minutes we had three clear-cut chances on goal. It's difficult when we play against teams who are physically stronger and organised," the Arsenal manager stressed.