Arsene Wenger criticised his Arsenal side's concentration levels after the 2-0 defeat to Manchester City at The Emirates.
The Gunners were on the back foot from the word go and were down to 10 men inside 10 minutes when Laurent Koscielny wrestled Edin Dzeko to the ground.
Wojciech Szczesny kept out the Bosnian's penalty but it was not long before the champions capitalised on their advantage - James Milner hammering home a fantastic angled drive and Dzeko doubling the lead on the half-hour.
Vincent Kompany was dismissed for a challenge on Jack Wilshere late in the day, but by that stage Wenger's men were well beaten.
The Frenchman told Sky Sports afterwards: "It was frustrating because we were down to 10 men with 80 minutes to play and you know it will be a difficult game.
"I felt we were a bit too timid at the start with not enough authority. We let them dictate the game to us in the first 10 minutes and we were punished. From then on, it became difficult ...