It took until the last game of the NFL regular season, but the first seed in the NFC playoffs has finally been determined.

Detroit’s offense awoke in the second half and its defense held firm all night to beat NFC North rival Minnesota 31-9 and claim the No. 1 seed on “Sunday Night Football.” It was the first meeting in league history between two teams with at least 13 victories, and it clinched the highest postseason seed in Lions franchise history.

Either team could have claimed the NFC’s top seed — and with it, a valuable first-round bye and home-field advantage — with a win. With the loss, the Vikings (14-3) fall to the No. 5 seed. They will open the postseason Jan. 13 in Los Angeles against the fourth-seeded Rams.

Though both the Vikings and the Lions (15-2) ranked in the top 10 in scoring average, neither team had surpassed 200 yards of offense at halftime, as the Lions led 10-6. A field goal early in the third quarter pulled the Vikings within a point, at 10-9, but Minnesota ultimately never took the lead.

Lions running back Jahmyr Gibbs caught a 10-yard touchdown pass late in the third quarter for a 17-9 lead, ran for a 13-yard touchdown early in the fourth quarter to extend the cushion to 24-9 and scored his fourth touchdown of the night to seal the victory with five minutes left in regulation on a short run. The four touchdowns gave Gibbs 20 this season, breaking a franchise record once held by Hall of Famer Barry Sanders.

Gibbs finished with 139 rushing yards on 23 carries and caught five passes for 31 more yards. Detroit quarterback Jared Goff completed 27 of his 33 passes for 231 yards, though he threw two interceptions, his most in a game in seven weeks.

Goff’s counterpart, Vikings quarterback Sam Darnold, completed only 18 of his 41 passes for a season-low completion percentage. One of the NFL’s best teams at scoring inside the red zone, the Vikings were 0-for-4 there Sunday, while Detroit was 3-for-3.

The victory didn’t come without a potential loss, however. Lions rookie cornerback Terrion Arnold injured a foot in the third quarter and did not return after he was carted to the locker room; Detroit, whose depth chart has been riddled by significant injuries, now has a chance to rest up with its first-round bye secured.