Seattle was up against the clock, needing a field goal to tie San Francisco as the game wound down.
The Seahawks’ drive stalled around midfield, out of field-goal range.
On fourth and 10, Sam Darnold hit veteran wide receiver Cooper Kupp, but only for a nine-yard gain. Kupp tried to spin and dive for the first down, but the officials said that he was short.
The play was reviewed, and there wasn’t a good angle showing exactly where the ball was when it crossed the sideline.
The ruling on the field stood.
The 49ers take over, and this game is over. San Francisco wins 32-29.