Arsenal captain Per Mertesacker felt they weren't good enough in defeat at Watford.

Mertesacker gave Arsenal a 1-0 lead but felt they took the foot off the gas after halftime.

He said: "Yes, I think that's what we lacked, especially in the second half, you know when we got the ball we missed a chance, but we missed as well to play, we missed it completely. That's what we did really well in the first half, where we regained possession, kept possession, that was really good.

"In the second half we just wasted the ball and that's obviously not enough. If you just protect and you have no chances on the break and you miss one chance to kill the game, then it's difficult in the Premier League to win any game."

Asked about his playing return, the German added: "I mean obviously it's important, but if you want to make the difference on the pitch, you know in the second half even myself it was difficult to push. I have to do better next time, that is my target, to push these guys more that we get more out of that when we get the ball."