A crestfallen Arsene Wenger refused to put the blame on Manuel Almunia for Arsenal's shock home defeat to newly-promoted West Brom.
Almunia conceded a penalty in the first half when he brought down Odemwingie but he saved Chris Brunt's weak effort, though the Spaniard was at fault for the second Baggies goal. Their defeat left Arsenal four points adrift of Barclays Premier League leaders Chelsea while West Brom moved into fifth place.
"Well, you can have question marks over many players today if you look at the performance, especially defensively,'' added Wenger. "Many players made massive mistakes defensively. I do not want to talk about any one performance, we were collectively poor. You could single out many players. Overall it was a poor team performance and we have to analyse why and respond well.
"It's unexplainable how flat the whole thing looked for the whole game, it's a mystery for me. Today in our performance something was not right. It was unusual to see a team as flat was we were.''
"We were poor and we got a poor result,'' said Wenger. "We were poor everywhere, at the back, up front and in the middle of the park. We had an off day and were not good enough to win the game. I believe the concentration that gives you the sharpness was not there today.
"We made it more difficult because we were not at our usual level, defensively or offensively. Anything was difficult for us today, to pass the ball, to win it back. Overall we got what we deserved, that is zero points. We didn't deserve more.''
West Brom boss Roberto Di Matteo was full of praise for his battling Baggies after they won at Arsenal for the first time in 27 years. "I would say we deserved it, the way we played, the way we created chances, scored goals and played very well,'' said Di Matteo.
"We pressed them very high, we pressed them all over the pitch. We managed not to let them play their usual way. And when we had the ball we passed it very well and created chances ourselves.
"I don't want us just to be pretty, I want results at the end of the day. We got a hammering at Chelsea and it wasn't a pretty week after that, but we've learned. We've cut out those mistakes and that gives us a chance to stay in a game and win things.
"We go into games believing we can win. It was the way we won, we were not lucky. We played some tremendous football and defended well too. I knew at 3-0 in front the game wasn't over because with the players Arsenal have on the pitch they will create chances.''