The Senators' Blue Line Was Always a House of Cards. Sanderson's Injury Just Proved It.

There is a version of Ottawa's offseason that reads as coherent strategy. Trade the captain, absorb the pain, sign Jordan Spence to shore up the blue line, bring back Claude Giroux on a one-year deal to steady the room, and let Jake Sanderson anchor the defense while the new pieces find their footing. It is a plan with internal logic. It is also a plan that only works if Sanderson plays — and right now, he is not playing.

I have been tracking this team's defensive situation all summer, and the Sanderson injury has never been a minor footnote. It is the load-bearing wall. Last season he logged 24.5 minutes a night, posted 37 points, and finished at plus-seven in a year when this team bled goals in tight games. He was the one defenseman on this roster who could be trusted with the hardest matchups, the late-game situations, the moments when a team's defensive identity is actually revealed. When Ottawa won only 43 percent of its one-goal games last season — a collapse that cost them the playoffs — Sanderson was the exception to the organizational pattern, not the rule.

Here is the historical parallel that keeps coming back to me: teams that rebuild around a young defensive anchor and then lose him to injury at the start of a transition year almost never recover in that same season. The 2017-18 Colorado Avalanche, the mid-decade New Jersey teams, the Carolina clubs that cycled through defensive injuries before their culture finally took — they all shared one trait. The rebuild timeline extended the moment the foundational defenseman went down. Ottawa is not in a different situation. They are in that exact situation.

What makes this worse is the compounding. Artem Zub is also sidelined. Ridly Greig is suspended. The secondary scoring problem that Tim Stutzle's 50-point season quietly papered over last year has not been solved — Stutzle carried the offense at a point-per-game pace while everyone around him underperformed. Now the blue line is short two bodies before a single puck has dropped in 2026-27, and the team is asking Spence — a reasonable signing, not a savior — to absorb responsibilities he was never meant to carry alone.

My read is this: the Senators' defensive foundation was always thinner than the Sanderson narrative allowed us to believe. He was genuinely excellent. He was also doing the work of two defensemen, logging nearly 24 and a half minutes per game because the options behind him were limited. The Spence signing addressed depth on paper. It does not address the reality of replacing a player of Sanderson's caliber with a player who has not yet proven he can operate at that level. When you build a defensive structure on one pillar and that pillar cracks, the whole thing lists — and this one listed before the season even started.

The declaration is not subtle: if Sanderson misses meaningful time in the first month of 2026-27, Ottawa will not make the playoffs this season. The close-game problem will resurface. The blue line will be exposed. Stutzle will again carry more than any one player should carry. The timeline on that prediction depends entirely on what the organization knows about this injury that it has not yet shared publicly — but the structural argument does not require a timeline to be true. It already is.