Two clubs, two holes in the trenches, and neither closes before November. The Los Angeles Chargers and Indianapolis Colts each sent a lineman to injured reserve with a four-game minimum attached, and the two situations are not remotely equal in cost.
Start with the Chargers. Rashawn Slater is headed to injured reserve after a successful ankle surgery, and the offensive tackle is out at least four games. That is the real one. Tackle is the position where a replacement isn't a downgrade, it's a different offense. Los Angeles now has to account for a new body on the edge every week, and my expectation is that the Chargers buy that help with a chip from a back or a tight end more often than they'd like. One fewer receiver releasing into the route on the downs where separation matters most. They don't lose the season here. They lose margin, and margin is what a contender spends all year protecting.
Now Indianapolis. The Colts placed defensive end Arden Key on injured reserve with a hamstring injury, also a minimum of four games. The reflex is to call this a gut punch to a pass rush that has produced just 1.5 sacks this season. I don't buy that framing. A group generating at that rate wasn't getting home because of Key's win rate off the edge, so removing him doesn't remove pressure. It removes a body. What it actually changes is the menu. My read is that the Colts lean harder into blitzing to manufacture what the front four can't, and that bill gets paid in the secondary every time the ball comes out hot. I also expect Indianapolis to work the outside market for an edge rather than promote from within, because the internal options are the same players who got the Colts to 1.5 sacks.
Here's what connects the two moves. Injured reserve in October is a roster mechanism as much as a medical one, a four-game commitment that teams use to buy themselves a healthy body later. Both clubs are now shopping a thin market for line help at the same time, and whoever moves first pays less. That matters for the Chargers, who need a tackle, and for the Colts, who need an edge, in a league where every other front office is doing the same math on the same short list of available linemen.
My verdict, and I'll own it: the Chargers' problem is the bigger one by a wide gap, because a tackle is harder to hide than an edge rusher. You can scheme a pass rush. You cannot scheme a left side of the line that holds up on its own. The Colts' defense has an answer available to it, even if that answer is more blitzing and more risk. Los Angeles mostly has to hope.
If I'm wrong, it's because the blitz-heavy version of the Colts gets shredded for the next four weeks and their defense can't get off the field, in which case Key's absence cost more than Slater's. I'd take the other side of that bet today, and I'd take it with money.
