But they face an in-form Burnley side, who could also move themselves into a Champions League spot if they claim all three points today.
Despite a mixed start to the season, only Manchester City and Manchester United have now won more Premier League games than Arsenal. First, though, for Arsenal is a midweek visit from Huddersfield on Wednesday night.
"We changed a bit of shape (at half time), I felt we had to give more".
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"It's easier for everyone on the pitch when we work together and then afterwards we have the quality to get forward and create opportunities to score".
Cech made a volleyball style set save on a well-struck Robbie Brady effort in the 39th minute. "We had to get more out of ourselves in the second half and I think we did that much better".
They looked to be settling for a point on Sunday but banked all three points when Alexis Sanchez converted a disputed injury-time penalty. When you see how hard it is to score against them it's a big result, you'd think that many clubs will drop points here.
But an improved display after the interval resulted in what Wenger felt was a warranted second away win of the campaign.
Egypt Hunts For Killers After Mosque Attack Leaves At Least 235 Dead
Witnesses said the assailants surrounded the mosque with all-terrain vehicles then planted a bomb outside, AFP reported. The blast occurred during Friday prayers, when the complex was packed with worshipers.