The Seahawks defeated the Green Bay Packers 29-21 on Saturday night in Seattle.
Seattle has won four straight games in this series and will host Green Bay in Week 16.
With a win in Week 14, the Seahawks would win the division and the NFC West title, which is a playoff berth.
Seattle would be eliminated from playoff contention if the Packers win their final two games.
The Packers won the division after defeating the Seahawks 28-10 in Week 3.
Green Bay would clinch the NFC North title with a victory over the Dallas Cowboys on Sunday.
Green Bay beat the Seahawks 23-10 at home in Week 7.
The Packers were without starting defensive end Julius Peppers (ankle) for the game, and safety Micah Hyde (shoulder) also missed the game.
The Packers and Seahawks split their two meetings this season, and Green Bay won 27-16 at home last year in the divisional round.
Seattle was 4-0 in the regular season and 3-0 overall in the playoffs.