Mark Lawrenson has admitted that he is unsure whether he was right to tip Arsenal to finish in fourth place in the Premier League this season.
Given the ease with which Chelsea beat Huddersfield, changes to the team may feel slightly unfair.
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The 19-year-old Matteo Guendouzi was once again given a start and once again impressed at the heart of Arsenal's midfield.
Emery's predecessor, Arsene Wenger, rarely played both Lacazette and Aubameyang together in the same side last season as he often erred on the side of caution despite their hugely impressive statistics when playing in the same team together.
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A bit dramatic, perhaps, but the early signs are that the post-Cristiano Ronaldo era will be challenging for more than one reason.
But it wasn't all ideal for Jorginho and Chelsea.
There is one sequence in the first half that fans and pundits (and even Bayer Leverkusen) zeroed in on, where he narrowly avoided passing the ball into his own net. Emery, however, has reassured Özil that he is central to Arsenal's attack.
Willian and Pedro didn't give Marcos Alonso and Cesar Azpilicueta much support defensively and that will concern Sarri, but eventually they tweaked the system with Kante dropping more centrally in the second half.
First up Chelsea. Eden Hazard is still on the bench for the Blues, whilst Mateo Kovačić gets onto the bench after being signed on loan from Real Madrid.
Torreira is a more natural defensive midfielder than either, and should add some much-needed protection to the back four.
Aside from the defensive deficiencies of both teams, it is clear that both Sarri and Emery will aim to entertain and attack in their maiden seasons in the Premier League. On the whole, he was one of Arsenal's better performers. They've not got players that accept responsibility without the ball.