Receiver Saubert executed the game-winning two-point play for the Seahawks.
Seattle engineered a remarkable comeback to defeat the Rams in overtime, clinching their place in the postseason.
Rallying from a 30-14 deficit in the fourth quarter, the Seattle squad triumphed 38-37 at home, registering their fifth consecutive victory.
While the Los Angeles had already secured a post-season berth earlier on Sunday, the Seahawks booked their return to the play-offs after a 24-month absence.
With this result, the Seattle have taken over their Conference standings with a 12-3 mark, supplanting the Los Angeles, who dropped to the fifth playoff position with an 11-4 record.
Signal-caller Sam Darnold threw two interceptions but recovered to deliver two scoring throws, culminating in the second TD to wideout Jaxon Smith-Njigba in overtime.
The visitors held a 13-7 lead at half-time before Kenneth Walker III broke free for a 55-yard scoring dash for Seattle.
Rams defensive back Josh Wallace then took back Darnold's initial pick for 56 yards, leading to a short score by Corum on the ensuing snap.
In the final stanza, a touchdown from Matthew Stafford to Nacua extended the Rams' lead to sixteen points, but Rashid Shaheed provided Seattle's hope with a spectacular punt return.
Darnold then connected with AJ Barner in the endzone, and a converted two-point play forced the contest into an extra period.
Although Puka Nacua scored for his another touchdown in overtime, Jaxon Smith-Njigba responded in kind to setup the decisive score.
Isla Mariner is a seasoned maritime journalist with over a decade of experience covering shipping, ports, and ocean conservation.