The Gunners got their season off to a good start, defeating managerless Crystal Palace 2-1 at the Emirates Stadium. Laurent Koscielny's first half goal cancelled out Brede Hangeland's opener, before Welsh midfielder Aaron Ramsey won the game for Arsenal in stoppage time.
The win papered over some of the cracks in Arsenal's display last night, as once again the Gunners conceded from a set piece - and goalkeeper Wojciech Szczesny has pointed out that it remains their big weakness.
"Maybe it was not the most beautiful of games, going 1-0 down we had to respond, but we will take the three points," Szczesny said. "We conceded to another piece which was not very good, although it was a good delivery and a great header, so that is something we can hopefully improve on."
Arsenal's defence continues to be a concern, with Arsene Wenger looking to bring in a new face following the £15m departure of Thomas Vermaelen to Barcelona earlier this month. The likes of Leonardo Bonucci (Juventus) and Kostas Manolas (Olympiacos) have both been linked, who should go some way to helping Arsenal's problems from set pieces.
It's also worth noting that defender Per Mertesacker missed the game having been given an extended break after his part in Germany's World Cup triumph, and his height would have been a key asset in trying to defend Hangeland's aerial threat - rather than have Alexis Sanchez marking him, which seemed perplexing in itself.
Some players didn't seem to know their responsibilities from the Crystal Palace corner, and some more training would surely help Arsenal become a more cohesive defensive unit.