The Kansas City Chiefs have solidified their position as the betting favorite to win the Super Bowl as the NFL season reaches its midpoint according to TheLines.com, an affiliate of the PlayUSA.com network. 

But the odds have shifted significantly from Week one to Week nine for much of the NFL, said the firm which tracks odds in the US regulated sports betting markets.

A consensus of the nation’s largest legal online sportsbooks — including FanDuel, DraftKings, PointsBet, PlaySugarHouse, and BetMGM — now places the Chiefs at +350 to win the Super Bowl, meaning bettors would win $350 for every $100 wagered. The reigning NFL champions entered the season at +600, a narrow favorite over the Baltimore Ravens.

Meanwhile, the 7-0 Pittsburgh Steelers are now +550 to win the Super Bowl after opening the season at +2500. Only the Chiefs have higher expectations. The Tampa Bay Buccaneers are third at +750, a shift from +1500, and the aforementioned Ravens have fallen to +900 from +650. 

The Seattle Seahawks are now the NFC favorites at +800, up from +2000 and supplanting the preseason NFC favorite San Francisco 49ers, who have fallen from +900 to +2800 after their Week 8 loss to Seattle.

“Death, taxes, and the Chiefs as NFL favorites are the surest bets right now,” said Brett Collson, lead analyst for TheLines.com. “The NFL is a league built on parity, and a significant change in Super Bowl odds are expected. But if there is a common theme among the favorites, it is that they all have stars at quarterbacks. In that way, it’s not surprising at all that these teams are favored at the midway point of the season.”