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As the postseason begins, the defending AFC champions are the fourth-betting choice to win Super Bowl 49 at a pair of major Nevada sports books.

Oddsmaker William Hill U.S. and the Westgate Las Vegas SuperBook both listed the Broncos as 6-1 shots to win it all as of Monday. Denver (12-4) is the No. 2 seed in the AFC.

The Seahawks are 9-4 favorites to repeat as Super Bowl champions at the SuperBook, while William Hill has Seattle and New England — the top seed in the AFC — as 11-5 co-favorites.

For the record, the Cardinals are the longest shot at both books. Arizona is 75-1 to win it all at the Westgate and 100-1 on William Hill’s oddsboard.

Here are the Super Bowl odds from both sports books:

Westgate Las Vegas SuperBook

Seahawks: 9-4.

Patriots: 5-2.

Packers: 5-1.

Broncos: 6-1.

Cowboys: 10-1.

Colts: 20-1.

Steelers: 20-1.

Ravens: 30-1.

Bengals: 40-1.

Lions: 40-1.

Panthers: 40-1.

Cardinals: 75-1.

William Hill U.S.

Patriots: 11-5.

Seahawks: 11-5.

Packers: 11-2.

Broncos: 6-1.

Cowboys: 8-1.

Steelers: 12-1.

Colts: 30-1.

Ravens: 30-1.

Lions: 40-1.

Bengals: 50-1.

Panthers: 50-1.

Cardinals: 100-1.