Arsenal's quest for Premier League glory got off to a winning start as Riccardo Calafiori's goal beat Manchester United 1-0 on Sunday, while world champions Chelsea were lucky to escape with a 0-0 draw against Crystal Palace.
After finishing second for the past three seasons, the pressure is on Arsenal boss Mikel Arteta to deliver the club's first league title since 2003/04.
The Gunners were far from impressive at Old Trafford but earned a huge three points thanks to a glaring error from United's stand-in goalkeeper Altay Bayindir.
The Turkish international flapped at Declan Rice's corner on 13 minutes, presenting Calafiori with the simple task of heading into an empty net.
United gave debuts to all of their new £200 million ($271 million) attacking trident of Matheus Cunha, Bryan Mbeu