The Gunners are currently top of the table.
"It’s hard to say [why Arsenal have started so well],” Mertesacker said. “I think one point is that we didn’t lose any players from last season. It was always a bit hard when we lost Van Persie and Alex Song last season. The year before, we lost Nasri and Fabregas. We kept the squad [this summer] and now I think there’s more quality to come. We have a few injured players as well, we hope they are coming back soon.”
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