Arizona State vs BYU Picks, Prediction, Odds, and Line Movement for Saturday October 31 2026

BYU returns home following an upset loss at UCF and is favored by more than two touchdowns against Arizona State. That number reflects the Cougars’ broader season, but the game-week injury report lists running back LJ Martin, cornerback Evan Johnson and lineman Trevin Ostler out. Rebuilding rhythm without Martin will not be automatic.

Arizona State visits BYU on Saturday, October 31, 2026, with kickoff scheduled for 3:30 PM ET. The October 30 sportsbook comparison shows Arizona State +16.5 (-108 DK); BYU -16.5 (-110 MGM), with over/under listings of 48.5 Over (MGM) / 46.5 Under (KAL). These prices were captured from different operators for Arizona State and BYU; check an individual book rather than assuming both sides are offered together. For Arizona State, the main price question is how much protection remains after the number moves from the October 26 comparison; for BYU, home-field execution decides whether that movement was justified.

Arizona State vs BYU Game Information and Odds

Date: Saturday, October 31, 2026. Kickoff: 3:30 PM ET. Location: BYU's home field. October 30 market: Arizona State +16.5 (-108 DK); BYU -16.5 (-110 MGM); listed totals 48.5 Over (MGM) / 46.5 Under (KAL).

Compared with the October 26 archived market quote, the home-side reference margin shifted 2 points toward BYU. This describes the two listed dates for Arizona State and BYU, not an independently verified opening line. The reference total changed from 49.5 to 47.5.

Arizona State Preview: Offensive Identity

Arizona State has been uneven, yet the Sun Devils can score enough to punish a BYU offense that settles for field goals. Their more urgent task is defense: BYU’s passing game can still produce explosive series even with a depleted rushing rotation.

In the season-to-date possession sample, Arizona State has produced 2.52 points per drive and allowed 2.22; its recorded pace is approximately 12.6 drives per game. Those numbers suggest the visitors are more reliant on field position and selective scoring chances, but their road offense still has to execute against an opponent that has allowed 1.65 points per possession.

BYU Preview: The Home-Field Test

BYU has the stronger defensive profile and should win line-of-scrimmage matchups more often. The Cougars need to show that their replacement backs can keep the offense balanced; otherwise Arizona State can shift more attention into coverage.

The home team has averaged 3.30 points per possession while yielding 1.65, on about 10.4 possessions per game. That is a meaningful offensive advantage against Arizona State, whose own defense has given up 2.22 per drive. How BYU responds to early-down pressure will show whether its normal offensive efficiency translates to this specific defense.

Where the Matchup Turns

The game can change on a small number of short-yardage snaps. BYU without Martin has less proven certainty about converting third-and-two or finishing drives from the 5-yard line. Those are valuable points when the favorite must win by 17.

The pace contrast is also worth watching: Arizona State has operated at 12.6 drives per game and BYU at 10.4. The difference creates a clock-management contest, with Arizona State more accustomed to frequent changes of possession. For Arizona State and BYU, the count of short fields may matter more than total plays if turnovers or special-teams errors create easy scoring opportunities.

Personnel and Game-Day Considerations

Arizona State cannot simply sit back and hope to lose respectably. A couple of controlled scoring possessions force BYU to keep its starters aggressive rather than protect a lead all afternoon.

Any remaining status questions for Arizona State and BYU should be resolved against the final Saturday availability report, not an earlier-week list. A last-minute change in the offensive or defensive rotation would affect the Arizona State-BYU game script and could invalidate the preferred price.

Best Bet and Playable Number

The editorial Best Bet is Arizona State +16.5 (-108 DraftKings). The recommendation is the sizable underdog cushion. BYU may be the clearly better team and still finish two touchdowns ahead, short of covering 16.5. Keep at least +16.5 points with Arizona State; do not accept a smaller underdog cushion. This Arizona State-BYU price comes from an October 30 market capture, not a verified game-day checkout; a move beyond the stated threshold cancels the recommendation.

Final Prediction

A 28-17 forecast has BYU delivering the more decisive scoring drives, with Arizona State still contributing 17 points. The Arizona State-BYU result depends on execution after halftime rather than the pregame number alone. For this matchup, turnovers near midfield and red-zone finishing could change the outcome quickly; that is why the Arizona State +16.5 (-108 DraftKings) price limit matters even if the projected winner remains the same.

Prediction: BYU 28, Arizona State 17