Ohio State vs USC Picks, Prediction, Odds, and Line Movement for Saturday October 31 2026

Ohio State arrives at the Coliseum as the higher-ranked team, but its offensive baseline has changed. Julian Sayin injured his throwing arm in the 19-15 win at Indiana and has been ruled out. The Buckeyes’ replacement quarterback will face a USC offense that can score quickly, making the old assumption of a comfortable Ohio State road win much less secure.

Ohio State visits USC on Saturday, October 31, 2026, with kickoff scheduled for 7:30 PM ET. The October 30 sportsbook comparison shows Ohio State -6.5 (-115 DK); USC +6.5 (+100 FD), with over/under listings of 51.5 Over (MGM) / 51.5 Under (DK). These prices were captured from different operators for Ohio State and USC; check an individual book rather than assuming both sides are offered together. For Ohio State, the main price question is how much protection remains after the number moves from the October 26 comparison; for USC, home-field execution decides whether that movement was justified.

Ohio State vs USC Game Information and Odds

Date: Saturday, October 31, 2026. Kickoff: 7:30 PM ET. Location: USC's home field. October 30 market: Ohio State -6.5 (-115 DK); USC +6.5 (+100 FD); listed totals 51.5 Over (MGM) / 51.5 Under (DK).

Compared with the October 26 archived market quote, the home-side reference margin shifted 1 points toward USC. This describes the two listed dates for Ohio State and USC, not an independently verified opening line. The total has held at 51.5 across these two dated quotes.

Ohio State Preview: Offensive Identity

Luke Fahey has been the first quarterback off Ohio State’s bench, and Tavien St. Clair has also taken first-team practice reps. That is a meaningful drop in certainty for an offense that had generated 39.3 points and more than 476 yards per game with Sayin directing the attack.

In the season-to-date possession sample, Ohio State has produced 3.59 points per drive and allowed 1.33; its recorded pace is approximately 11.1 drives per game. Those numbers suggest the visitors are capable of staying on schedule, but their road offense still has to execute against an opponent that has allowed 2.63 points per possession.

USC Preview: The Home-Field Test

USC is 6-2 and will be comfortable turning this into a test of which team can protect its quarterback while moving at pace. The Trojans can threaten downfield, but they must protect the ball against an Ohio State defense that does not need a fully functioning offense to change a game with one takeaway.

The home team has averaged 3.50 points per possession while yielding 2.63, on about 9.4 possessions per game. That is not by itself enough to guarantee separation against Ohio State, whose own defense has given up 1.33 per drive. How USC responds to early-down pressure will show whether its normal offensive efficiency translates to this specific defense.

Where the Matchup Turns

The contrast is strongest on third down. Ohio State’s defense can keep USC behind the chains, yet the Trojans have a clearer plan at quarterback. If USC avoids obvious passing downs and keeps the Buckeyes from scoring off turnovers, this game can remain a possession contest.

The pace contrast is also worth watching: Ohio State has operated at 11.1 drives per game and USC at 9.4. The difference creates a clock-management contest, with Ohio State more accustomed to frequent changes of possession. For Ohio State and USC, 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

Ohio State has enough talent at running back and receiver to win even with a new starter. But the injury report also lists Ja’Kobi Jackson out and Bo Jackson questionable, making the rushing rotation another pregame item to check.

Any remaining status questions for Ohio State and USC 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 Ohio State-USC game script and could invalidate the preferred price.

Best Bet and Playable Number

The editorial Best Bet is USC +6.5 (+100 FanDuel). With the starter change, asking Ohio State to win by seven or more on the road looks demanding. USC plus nearly a touchdown provides a cushion while allowing for a tight Buckeyes win. Keep at least +6.5 points with USC; do not accept a smaller underdog cushion. This Ohio State-USC 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 28-27 forecast has USC delivering the more decisive scoring drives, with Ohio State still contributing 27 points. The Ohio State-USC 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 USC +6.5 (+100 FanDuel) price limit matters even if the projected winner remains the same.

Prediction: USC 28, Ohio State 27