The Sooners' over/under win total for 2018 is 10.5. Oklahoma has won the Big 12 the past three seasons, including in 2017 when the league brought back its conference championship game for the first time since 2010.
Texas's over/under is currently at 8.5.
Bovada released the betting propositions Tuesday afternoon.
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TCU is at 7.5 wins while Oklahoma State is given even odds at winning eight games. West Virginia should win seven games and Baylor is expected to win no more than six games, which would be a massive improvement from the Bears' 1-11 season under Matt Rhule in 2017.
Odds for the rest of the conference, including Texas Tech, will be released at a later date. Some teams aren't yet open for bets because of injuries or personnel questions.
Texas A&M is expected to win seven games under first-year coach Jimbo Fisher.
Alabama, Clemson, Georgia and Washington are all predicted to win between 10 and 11 games. Wisconsin is given even odds to win 10 games and Penn State, Miami and Ohio State should win between 9 and 10 games.