Tight end Saubert executed the decisive two-point conversion for Seattle.
Seattle staged a remarkable comeback to defeat the Los Angeles Rams in overtime, securing their place in the postseason.
Overcoming a sixteen-point hole in the final period, the Seattle squad emerged victorious by a single point at home, registering their fifth consecutive victory.
While the Rams had become the first to earn a playoff spot earlier on game day, the Seahawks secured their place to the postseason after a two-year hiatus.
With this result, the Seahawks have taken over their division's race with a 12-3 record, replacing the Rams, who fell to the fifth playoff position with an 11-4 standing.
Signal-caller Darnold threw two interceptions but regrouped to deliver two touchdown passes, including the second TD to wideout Smith-Njigba in the extra period.
The visitors held a 13-7 lead at the break before Walker broke free for a long scoring dash for the home side.
Los Angeles defensive back Wallace then returned Darnold's first interception for 56 yards, leading to a one-yard score by Blake Corum on the next play.
In the fourth quarter, a scoring pass from Stafford to Nacua pushed the Rams' lead to 30-14, but Rashid Shaheed ignited the comeback with a spectacular punt return.
Darnold then found AJ Barner in the endzone, and a successful conversion sent the contest into overtime.
Although Puka Nacua raced in for his another touchdown in OT, Jaxon Smith-Njigba responded in kind to setup the decisive score.
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