Ben Brown's preseason knee injury just became official: the Patriots backup center/guard is out, which means Greg Van Roten inherits the primary reserve role up the middle. This wasn't unexpected after Brown went down in the Aug. 13 preseason game, but it confirms what Mike Vrabel and Eliot Wolf are working with at interior offensive line depth heading into the regular season.

Van Roten is a veteran presence—exactly the kind of guy you want holding a clipboard and ready to go if something happens to your starters. The Patriots have invested in continuity here, and a 10-plus year pro has the experience to slot in without panic. That's not sexy, but it's functional. The real question isn't about Brown or Van Roten; it's whether this interior line as constructed can stay healthy. One injury down and you're already cycling in journeymen. That's a fragile setup if Vrabel's going to run the kind of power running game he wants.

The more encouraging sign is TreVeyon Henderson traveling with the team despite his ankle injury. The fact that Henderson wasn't downgraded to out—unlike Brown—suggests the Patriots believe he's tracking toward availability sooner rather than later. Henderson's role in this backfield matters. If he can get healthy and contribute in that committee approach, it takes pressure off the run game to be one-dimensional. If he's sidelined longer, you're leaning harder on Rhamondre Stevenson and whatever else is available in the room.

This is the preseason tax: bodies break, depth gets exposed, and suddenly your backup plan is your plan. Van Roten's capable enough to handle the workload if needed, but the Patriots would prefer not to find out. Health up front will define whether this offense can establish the tempo Vrabel wants. One knee injury down. Hope they don't get another.