An interception kept the deficit at three
Buffalo beat Los Angeles 24-16 despite recording five turnovers to the Chargers' one. That count identifies mistakes. It does not, by itself, measure their scoring consequences. C.J. Gardner-Johnson's fourth-quarter interception supplies a specific reason to keep the two separate.
Josh Allen lost a fumble on a Khalil Mack sack at 15:00, giving Los Angeles possession at Buffalo's 28 with a 13-10 lead. The Chargers had both the ball and a short distance to the end zone. Justin Herbert then completed passes for no gain and five yards, leaving third-and-5.
At 13:38, Gardner-Johnson intercepted Herbert at Buffalo's 1 and returned the ball 41 yards. Three Chargers offensive plays after the fumble, Buffalo had possession again. Its deficit was still three.
That was damage control, not erasure. Allen's lost offensive opportunity remained lost. Gardner-Johnson ended the ensuing Chargers possession without additional points; he did not retroactively make the fumble harmless. The distinction matters because Buffalo's next scoring task remained manageable: overcome a three-point deficit, rather than a larger margin produced by this particular mistake.
Rousseau made the late response harder
Later, with Buffalo ahead 17-13, Greg Rousseau supplied a different kind of limit. His sack did not change possession. It changed what Los Angeles needed to do to retain it.
The Chargers faced second-and-7 when Rousseau sacked Herbert for a three-yard loss at 6:02. The next requirement was third-and-10: more distance, with one fewer down available before fourth down. Herbert then threw incomplete on third down and again on fourth. Buffalo's next offensive play was a James Cook III run at 5:08, with the four-point lead intact.
The useful measure here is the change in the Chargers' conversion burden, not simply another mark in a sack total. Rousseau pushed the required gain from seven yards to ten during a late opportunity to answer Buffalo's lead.
The sack deserves that credit, but not ownership of the entire stop. Two subsequent incompletions were still necessary to return possession to Buffalo. The sequence supports a precise conclusion: Rousseau made the response harder, and the following passes left Los Angeles without points from that opportunity.
Cook supplied the gains before Allen supplied the finish
Between those defensive stops, Buffalo turned a three-point deficit into a four-point lead through a rushing sequence whose scoring line gives Allen the finish but not the whole explanation.
Beginning at 9:13 in the fourth quarter, Cook gained 11 yards to the Chargers' 16. His next carry gained another 11, reaching the 5. Both runs earned first downs. A four-yard carry followed, leaving Buffalo one yard from the end zone on second down. Allen scored from there at 7:35, and the extra point made it 17-13.
Cook's contribution was not merely yardage accumulated before a touchdown. The first two carries renewed Buffalo's opportunities; the third shortened the remaining scoring task to one yard. Each changed the conditions of the next play in a visible, useful way.
Score margin through the game
That is the explanatory value of this four-play stretch. Allen crossed the goal line, but Cook repeatedly reduced the burden before that finish. The sequence does not need a claim about blocking design or a particular defensive weakness to establish its importance. Two first downs and a one-yard finish are enough.
The narrow score was an opportunity Buffalo used
The connection is between containment and conversion. Gardner-Johnson kept one post-fumble opportunity from enlarging Buffalo's deficit. Cook renewed the downs and shortened the go-ahead finish. Rousseau then increased the burden on a late Chargers response, which ended with two incompletions.
Those sequences do not explain away five turnovers. They explain how Buffalo navigated a consequential stretch despite them. The turnover count captures the mistakes; the unchanged deficit, the renewed downs and the protected lead show why that count was not the whole game.
