BYU Is a Heavy Favorite at Home on Halloween
The books have spoken clearly on this one. BYU enters as a massive home favorite over Arizona State when the two Big 12 programs meet in Provo on Saturday, October 31, with a noon kickoff. The Cougars are priced between -833 and -1000 across available books, making this one of the more lopsided college football matchups on the board this weekend.
BYU at -833 on DraftKings implies an 89.3% win probability. Kalshi is even more confident in the Cougars at -909, implying a 90.1% chance of a BYU win. The Odds Converter can help you translate any of these American odds into implied probabilities or decimal format.
Arizona State is getting between +575 and +669 depending on the book, which translates to a roughly 13% to 15% implied win probability for the Sun Devils.
Breaking Down the Spread and Total for Arizona State at BYU
The Spread: BYU -17.5
DraftKings has installed BYU as a 17.5-point favorite, with both sides priced at -110. That number lines up with what the moneyline is telling us: a team priced at nearly 90% to win outright is expected to do so comfortably, and a three-score spread reflects that expectation.
The key betting question is whether BYU can win by 18 or more, or whether Arizona State can keep it within three scores. Covering large spreads is never a given in conference play, where familiarity and motivation tend to compress margins.
The Total: 51.5
DraftKings has set the over/under at 51.5, with both sides at -110. Whether the game goes over or under will depend on how well Arizona State's offense moves the ball against BYU's defense, and whether the Cougars pile on points or manage the game once they establish a lead.
Notable Line Differences Across Books
The moneyline gap across books is worth noting. Kalshi is offering Arizona State at +669 compared to +575 at both DraftKings and Unibet. On a big underdog, getting the best number matters, and a 94-cent difference per dollar won adds up. Always shop the line before placing.
Unibet's BYU price of -1000 is the stiffest of the three books listed, suggesting some variation in how each book is handling liability on the Cougars' side. No spread or total data is available from Kalshi or Unibet at this time, so DraftKings is the primary reference for those markets.
Betting Factors That Could Move the Line
Injury and Availability News
With 10 days until kickoff, injury reports still have time to shape this line. If Arizona State loses a key skill position player or BYU's defensive depth is affected, the spread could move meaningfully. Watch practice reports in the days leading up to the game.
BYU's Home Advantage
The Cougars play in LaVell Edwards Stadium, where the altitude and crowd environment in Provo give home teams a consistent lift. That factor is likely already priced into this line, but BYU's home record this season is worth checking for additional context.
Arizona State's Season Form
Arizona State's performance in Big 12 play is worth examining before making any decision here. If the Sun Devils have been competitive in conference games, the +575 to +669 range may offer value. If they've been getting blown out, the current spread may be entirely appropriate.
Line Movement in the Days Ahead
With 10 days until kickoff, this line has room to move. Sharp money, public betting percentages, and news-driven adjustments could all shift the spread and total. The Line History tool tracks movement across 100-plus sportsbooks over the last 30 days, so you can see whether the number is drifting toward or away from BYU as game day approaches.
The market is as clear as it gets: BYU is expected to win at home and win big. The real betting question is whether 17.5 points is the right margin, and whether line differences across books create an edge worth pursuing on either side.