There are afternoons that leave you scratching your head, and this was certainly one of them. Despite dominating large swathes of the match, we fell to a 2-1 defeat at home to AFC Bournemouth, a result that puts a significant dent in our title charge.
The game started in the worst possible way. Teenager Eli Junior Kroupi finished at the back post on 16 minutes, the first time they got at our box. We found a way back on 34 when Viktor Gyökeres slammed home a penalty, his 18th goal in a debut campaign.
The second half was a story of missed opportunities, and then a sucker punch: a ball played through and Alex Scott rifling home from close range on 73 to inflict only our second home defeat of the season.
We pushed hard in the final fifteen minutes, throwing everything but the kitchen sink at the Cherries' goal, but a side unbeaten in 11 held firm.
Arteta did not soften it:
"A week ago I was standing here feeling proud and today we have to apologise for the performance in the second half. It was not acceptable."
"Mathematically, (the title) it's still possible, but today it's impossible to think about it. We need to digest the result and the performance in the second half, understand why and have a different reaction."
Instead of going 12 clear, we sit nine ahead with Manchester City at Chelsea on Sunday and the Etihad waiting for us the Sunday after.
Man of the Match: Viktor Gyökeres. His penalty was flawless and his work rate off the ball was tireless, even when the service to him was limited.