"I don't know how much but it puts you under pressure because you have to make a result. We are up for it. We are ready for a fight and the team is highly focused to do it. We are on a very strong run.
"We definitely have a momentum, if you look at the points we have made compared to two months ago. We are going for it and we make the points.
"Away from home recently we have won everywhere - at Fulham, at Sunderland, at Swansea, at QPR. Derbies are difficult to win."
"We scored early and started well. Walcott is 24 now. He is a mature player. He has improved his finishing. He has improved his ability to resist pressure from the opponents. It was as similar goal to the one he scored on Sunday against Manchester United.
"After that I felt QPR played with quality, pride and they were fearless. You can see that if they had not had to play with fear in the last few months they had the quality to stay in the Premier League.
"We needed a special focus today to win the game. The points were vital for us today. We couldn't make any mistakes and that was a bit detrimental maybe to our offensive game.
"They made life difficult for us. We had good focus and good determination. We lacked a few final balls in the final third.
"Overall, I expected a difficult game and I was not disappointed."
Source: Arsenal World