Tight end Eric Saubert executed the game-winning two-point play for Seattle.
Seattle engineered a stunning comeback to defeat the Los Angeles Rams in overtime, securing their spot in the postseason.
Overcoming a 30-14 hole in the final period, the Seattle squad triumphed by a single point at home, notching their fifth straight victory.
While the Los Angeles had become the first to earn a playoff spot earlier on game day, the Seattle team booked their return to the postseason after a two-year hiatus.
With this outcome, the Seattle now lead their division's race with a 12-3 mark, replacing the Rams, who fell to the number five playoff position with an 11-4 record.
Signal-caller Sam Darnold threw two interceptions but regrouped to make two touchdown passes, including the tying score to wideout Smith-Njigba in the extra period.
The visitors held a 13-7 lead at half-time before Walker broke free for a 55-yard scoring dash for the home side.
Rams cornerback Wallace then returned Darnold's first interception for 56 yards, leading to a one-yard touchdown by Corum on the next play.
In the fourth quarter, a touchdown from Stafford to Nacua extended the Rams' lead to 30-14, but Shaheed ignited the comeback with a 58-yard punt return.
Darnold then connected with AJ Barner in the end zone, and a successful two-point play sent the contest into an extra period.
Although Puka Nacua raced in for his second TD in overtime, Jaxon Smith-Njigba answered in kind to set up the game-winning score.