Receiver Saubert executed the game-winning two-point play for Seattle.
Seattle engineered a remarkable comeback to defeat the Los Angeles Rams in overtime, clinching their place in the NFL play-offs.
Overcoming a 30-14 hole in the final period, the Seahawks triumphed 38-37 at home, notching their fifth straight victory.
While the Los Angeles had become the first to earn a post-season berth earlier on game day, the Seahawks booked their return to the postseason after a two-year hiatus.
With this outcome, the Seahawks have taken over their Conference standings with a 12-3 mark, supplanting the Los Angeles, who fell to the fifth seed with an eleven and four record.
Quarterback Darnold threw two interceptions but recovered to deliver two touchdown passes, including the second score to wideout Smith-Njigba in the extra period.
The Rams held a 13-7 advantage at half-time before Kenneth Walker III broke free for a 55-yard touchdown run for the home side.
Rams cornerback Josh Wallace then returned Darnold's initial interception for a big return, leading to a short score by Corum on the next play.
In the fourth quarter, a touchdown from Matthew Stafford to Nacua pushed the Rams' lead to sixteen points, but Shaheed ignited the comeback with a 58-yard return for a score.
Darnold then found Barner in the end zone, and a successful conversion sent the contest into overtime.
Although Nacua raced in for his another TD in OT, Smith-Njigba answered in kind to setup the game-winning score.
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