Receiver Saubert made the decisive two-point play for the Seahawks.
Seattle staged a stunning fightback to defeat the Los Angeles Rams in extra time, clinching their spot in the postseason.
Rallying from a sixteen-point deficit in the fourth quarter, the Seattle squad triumphed by a single point at home, registering their fifth consecutive victory.
While the Los Angeles had already secured a post-season spot earlier on Sunday, the Seattle team booked their return to the play-offs after a 24-month hiatus.
With this outcome, the Seattle have taken over their Conference race with a 12-3 mark, supplanting the Rams, who fell to the fifth seed with an 11-4 record.
Quarterback Sam Darnold had two picks but regrouped to deliver two scoring throws, culminating in the second score to wideout Jaxon Smith-Njigba in the extra period.
The visitors held a 13-7 lead at the break before Walker broke free for a 55-yard scoring dash for the home side.
Rams cornerback Josh Wallace then returned Darnold's initial interception for a big return, setting up a one-yard touchdown by Blake Corum on the next play.
In the fourth quarter, a scoring pass from Matthew Stafford to Puka Nacua pushed the Rams' lead to 30-14, but Shaheed ignited Seattle's comeback with a 58-yard return for a score.
Darnold then found AJ Barner in the endzone, and a converted two-point play sent the contest into an extra period.
Although Puka Nacua scored for his second touchdown in OT, Smith-Njigba responded in kind to setup the game-winning score.
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