Sam Darnold was five snaps into the 2026 NFL season — and the Seahawks were five snaps into their Super Bowl title defense — before everything took an unexpected turn. A sack ended Seattle's opening possession. Darnold walked gingerly to the sidelines before later limping to the locker room with a hip injury, and suddenly Drew Lock found himself as QB1.
Seattle won anyway (with some help); Lock finished 16 of 22 for 187 yards and a touchdown, the defense picked off Drake Maye three times in the fourth quarter and the defending champs rallied from a 10-point deficit. The early news on Darnold has been encouraging – tests ruled out a fracture and the injury is believed to be muscular — but he is expected to miss at least the Week 2 matchup against Arizona. Which brings us to a question that comes up almost every NFL season: What actually happens when a championship-caliber team loses its starting quarterback?
The easy answer: The team gets worse. The more interesting question is whether the rest of the roster can absorb that drop-off without letting one injury change the entire season. History says good teams can survive losing QB1 — especially when the absence is short and the backup fits the offense.
So, yes, no surprise here: Good teams get worse when they lose their starting quarterback. The surprise is how often they still survive it. Looking at data from 2015-2025, 41 teams were above .500 at the time they had to turn to a backup quarterback.
Those backups went just 55-82, a .401 winning percentage, which tells you exactly what you'd expect: Losing your starter usually makes even a good football team significantly worse. Here's the caveat: 24 of those 41 teams — nearly 60% — still made the playoffs. Twelve won at least one postseason game, and four eventually won the Super Bowl.
And the better the team, the better its chances of surviving. Among more established contenders — teams that had played at least four games and were winning at a .600 clip or better —nearly two-thirds still made the playoffs despite their replacement quarterbacks going just 36-47. That's the important part.
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