What happened: San Francisco is working new defensive linemen into the rotation early in the season. The group's shared priority is blending into the front rather than arriving as isolated additions.

Why it matters: That matters for a 49ers team already off to a 3-0 start, where a clean defensive fit can help preserve early momentum. A settled front also keeps attention on on-field performance as the club navigates Jed York's six-game suspension.

What to watch: Watch for how quickly the new linemen settle into defined roles as the regular season moves deeper into October.