What happened: Field Yates said Fernando Mendoza is learning the NFL's terminology and communication systems during his first training camp. Yates framed that adjustment as learning a new language.

Why it matters: Mastering calls and protections is central to handling a larger role. Mendoza's recent work with the first team gives coaches a closer look at his command.

What to watch: Preseason snaps will test Mendoza's operation of the huddle, timing and protection checks.