What happened: Gray suffered a concussion in a utility task vehicle accident last week. He missed practice throughout the week, including Wednesday and Thursday's sessions documented by Tennessee. [Titans injury updates](https://www.tennesseetitans.com/news/week-1-injury-report-titans-vs-jets).

Why it matters: Tennessee must replace a linebacker listed as a starter on its current depth chart. Cody Barton and Owen Pappoe are among the other linebackers on the 53-man roster.

What to watch: Sunday's snap distribution will show how Tennessee fills Gray's role.