Season highlights included a sweep of the Oakland Raiders for the second straight year, and winning both of their Monday Night Football contests on the road against the Atlanta Falcons and at home against the New York Jets, where Jim Zorn completed 13 passes in a row in a 30–7 victory.
The team also enjoyed their first victory over the Denver Broncos 28–23 on a 43-yard touchdown pass from Zorn to Largent in the final minutes.
The team lost twice to the Kansas City Chiefs, including a 37–21 defeat in week 14 that eliminated Seattle from playoff contention.
The team also lost running back David Sims, who led the AFC in touchdowns in 1978, to a career-ending injury.
Running backs (RB) Wide receivers (WR) Tight ends (TE) Defensive linemen (DL) Defensive backs (DB) Special teams Reserve [1] Divisional matchups have the AFC West playing the NFC West.
A 37–21 loss to the Kansas City Chiefs in week 14 knocked them out of playoff contention, but rebounded to end their season repeating 1978 at 9–7.