SEATTLE (AP) -- Malcolm Smith returned an interception 37 yards for a touchdown, Marshawn Lynch added a 2-yard scoring run and the Seattle Seahawks clinched the NFC West title and home-field advantage throughout the playoffs with a 27-9 win over the St. Louis Rams on Sunday.
Seattle (13-3) matched the franchise record for wins in a season and finally wrapped up the No. 1 seed after failing in two previous attempts, including last week's loss to Arizona that snapped a 14-game home winning streak.
Smith's interception was the start of a dominant performance by the Seahawks defense that held St. Louis under 100 yards of total offense into the fourth quarter.
The defensive effort and a lack of discipline from the Rams (7-9) helped Seattle's offense do just enough. Russell Wilson threw a 47-yard TD pass to Golden Tate, and Lynch finished with 97 yards rushing.