When considering accuracy, you can't look just at the completion percentage. That does tell an important part of the story, but not the whole story. You also need to look at the offense. Locker had no TE to throw too, really. It's not part of the offense. It's very vertical, with a lot of low completion throws, but one that also gives him more room to run as a QB. This will lower his completion percentage. Also, look at how often he had to throw the ball away because all his guys were covered. Look at how many plays called for short, dump passes (not many). The better way to look at accuracy is to watch the guy play. When he throws the ball, does it go where he's aiming? Yes or no? Unfortunately, even that's not very clear in this case. When he's on the run, he's pretty accurate. From the pocket, he's less so. What does this mean? Well, it might mean that he's overthinking it and does better when he can't think too much. It might mean he doesn't trust his pocket. It might be a vision issue. I don't know.