Tight end Saubert executed the decisive two-point conversion for Seattle.
The Seattle Seahawks engineered a remarkable comeback to overcome the Rams in overtime, clinching their spot in the NFL play-offs.
Rallying from a sixteen-point deficit in the fourth quarter, the Seattle squad emerged victorious by a single point at home, registering their fifth straight victory.
While the Los Angeles had already secured a post-season spot earlier on game day, the Seahawks secured their place to the postseason after a two-year hiatus.
With this result, the Seattle now lead their division's race with a twelve and three record, replacing the Rams, who fell to the number five playoff position with an eleven and four record.
Quarterback Darnold had two picks but recovered to make two touchdown passes, including the second TD to star receiver Jaxon Smith-Njigba in the extra period.
The visitors held a six-point advantage at the break before Kenneth Walker III burst through for a long scoring dash for Seattle.
Rams cornerback Wallace then returned Darnold's initial interception for a big return, setting up a one-yard touchdown by Corum on the ensuing snap.
In the final stanza, a touchdown from Stafford to Puka Nacua pushed the advantage to sixteen points, but Rashid Shaheed provided Seattle's comeback with a 58-yard punt return.
Darnold then connected with Barner in the end zone, and a successful conversion forced the contest into an extra period.
Although Nacua scored for his another touchdown in overtime, Jaxon Smith-Njigba answered in kind to set up the decisive conversion.