I'm not quite as worried as others are, these were two of the best five teams in the game and it could have gone either way. We will be fine. (Harrison Smith looked really old in this game though).
1) I think Darnold was better than many think. PFF actually gave him a pretty high game score (second to Jones on the offense). He wasn't perfect but he did enough. It's also worth remembering this is only his 7th start in the last two years. It's not unreasonable to think he's still seeing new things out there.
2) Ingram was horrible. Darnold was under a lot of pressure all game, straight up the middle. Makes it hard to do a lot with a crashing pocket. I suspect Ingram will be benched soon.
3) Lions were lucky and the refs blew a few calls that really impacted the game. On the second TD, Pace was tackled by their lineman for a pretty obvious hold, for example, and several illegal hits weren't called on Detroit's defense. The Lions also recovered their own fumbles twice. Any of these things change, we likely win.
4) KOC is a huge positive but, as I've mentioned a few times now, his play-calling is not always ideal. The rollout on third and four being the big example this week. We've also had a lot of stupid pre-snap penalties that hurt our drives. That's really annoying and usually a coaching issue.
5) We have a kicker.