Receiver Eric Saubert made the game-winning two-point play for the Seahawks.
The Seattle Seahawks engineered a stunning fightback to defeat the Los Angeles Rams in extra time, clinching their spot in the NFL play-offs.
Rallying from a 30-14 deficit in the fourth quarter, the Seahawks emerged victorious by a single point at home, notching their fifth consecutive victory.
While the Los Angeles had become the first to earn a playoff berth earlier on Sunday, the Seattle team secured their place to the play-offs after a 24-month absence.
With this result, the Seahawks have taken over their Conference race with a twelve and three record, replacing the Rams, who fell to the fifth playoff position with an 11-4 standing.
Quarterback Sam Darnold had two interceptions but regrouped to make two touchdown passes, including the second score to wideout Jaxon Smith-Njigba in overtime.
The visitors held a six-point lead at half-time before Walker broke free for a 55-yard touchdown run for Seattle.
Los Angeles defensive back Wallace then returned Darnold's first interception for 56 yards, setting up a short touchdown by Blake Corum on the next play.
In the final stanza, a touchdown from Stafford to Nacua extended the Rams' lead to 30-14, but Rashid Shaheed provided Seattle's comeback with a spectacular return for a score.
Darnold then found Barner in the endzone, and a converted two-point play forced the contest into overtime.
Although Nacua raced in for his another touchdown in overtime, Smith-Njigba answered in kind to set up the game-winning score.