Receiver Eric Saubert executed the game-winning two-point play for the Seahawks.
Seattle engineered a remarkable comeback to overcome the Los Angeles Rams in extra time, securing their place 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 win.
While the Los Angeles had already secured a post-season spot earlier on Sunday, the Seattle team secured their place to the play-offs after a 24-month hiatus.
With this result, the Seattle have taken over their division's standings with a twelve and three record, replacing the Rams, who fell to the fifth seed with an eleven and four record.
Signal-caller Darnold had two interceptions but regrouped to deliver two touchdown passes, culminating in the tying TD to wideout Jaxon Smith-Njigba in overtime.
The visitors held a 13-7 lead at the break before Walker broke free for a long touchdown run for the home side.
Los Angeles cornerback Josh Wallace then took back Darnold's first interception for 56 yards, leading to a one-yard score by Corum on the next play.
In the fourth quarter, a touchdown from Stafford to Nacua extended the Rams' lead to sixteen points, but Shaheed provided the hope with a 58-yard return for a score.
Darnold then connected with Barner in the endzone, and a converted two-point play sent the contest into an extra period.
Although Puka Nacua raced in for his second TD in overtime, Jaxon Smith-Njigba responded in kind to setup the decisive conversion.
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