Tight end Eric Saubert made the decisive two-point conversion for Seattle.
The Seattle Seahawks staged a remarkable comeback to defeat the Rams in overtime, clinching their place in the postseason.
Overcoming a sixteen-point hole in the final period, the Seahawks emerged victorious by a single point at home, notching their fifth straight win.
While the Rams had become the first to earn a playoff berth earlier on game day, the Seahawks booked their return to the play-offs after a 24-month hiatus.
With this result, the Seahawks have taken over their Conference standings with a 12-3 mark, replacing the Rams, who fell to the number five playoff position with an eleven and four record.
Quarterback Sam Darnold threw two picks but recovered to make two scoring throws, culminating in the tying score to wideout Smith-Njigba in the extra period.
The visitors held a 13-7 lead at half-time before Kenneth Walker III burst through for a long touchdown run for Seattle.
Los Angeles cornerback Josh Wallace then took back Darnold's first interception for 56 yards, leading to a one-yard touchdown by Corum on the ensuing snap.
In the fourth quarter, a touchdown from Matthew Stafford to Nacua extended the Rams' lead to 30-14, but Rashid Shaheed provided the hope with a 58-yard return for a score.
Darnold then connected with Barner in the end zone, and a successful two-point play sent the contest into overtime.
Although Nacua scored for his second TD in overtime, Smith-Njigba responded in kind to setup the game-winning conversion.
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