The 49ers Won Five of Six Close Games Last Year. Here's Why That Math Gets Harder Without Greenlaw and Samuel.

The number that keeps nagging at me isn't in the injury report. It's this one: San Francisco won five of its six games decided by a single score last season, an 83% close-game rate that was the primary engine of a 12–5 record that, by underlying point differential, should have looked more like a .600 team. That gap between what the 49ers were and what they appeared to be was always fragile. Darius Greenlaw's suspension and Deebo Samuel's hamstring — both listed out — don't just thin the roster. They erode the exact margins that made that fragile thing work.

Start with Samuel, because the receiving corps has been in quiet crisis for weeks. My colleagues have been cataloguing the damage since early October: Evans questionable, Juszczyk out, the room operating on fumes. Samuel's absence makes a thin group genuinely threadbare. Jauan Jennings produced 711 yards and nine touchdowns across 17 games last season, and George Kittle — when healthy — gave Brock Purdy a safety valve that produced 634 yards and seven scores in just 12 games before his Achilles ended everything. But Kittle's return from that Achilles tear is still not a certainty, and Purdy's 13 interceptions in 11 games last year suggest he is not a quarterback who thrives when his options narrow. Samuel was the release valve when the structure got tight. Right now that valve is closed.

The defensive side of this is less visible but arguably more consequential. Greenlaw has been one of the more underappreciated pieces of San Francisco's defensive identity for years — a linebacker whose football IQ compensates for whatever he lacks in raw athleticism. Fred Warner logged only six games last season, which means the linebacker corps was already operating shorthanded for stretches. Dee Winters led the team with 110 tackles across 18 games, and Marques Sigle contributed 66 in 15 before landing on the out list himself. The depth behind those players — Tatum Bethune, Jaden Dugger, Romello Height — has not been tested in meaningful situations. That's not an indictment; it's just an honest accounting of what we don't know.

Here's the part that actually worries me. That 83% close-game win rate wasn't random — it reflected a team that executed in high-leverage moments better than its overall efficiency suggested it should. But that kind of performance is notoriously difficult to sustain. Teams that dramatically outperform their point differential in tight games tend to regress, and San Francisco's playoff demolition at the hands of Seattle — 6–41 — was the first hard evidence that the regression was real. What Greenlaw's suspension and Samuel's hamstring do is remove two of the players who were presumably part of that close-game execution. You don't get to run the same trick with a different cast and expect the same result.

The 49ers have enough talent, when healthy, to absorb one of these losses. Nick Bosa is also out, which means they are simultaneously missing a pass rusher, a linebacker, and their most dynamic skill player on offense. Three simultaneous absences at three different positions of consequence is not a depth problem — it's a structural stress test. And the underlying numbers from last season suggest this team was already operating closer to the edge than the record implied. That edge just got narrower.