No. 4 Ohio State opened as 17-point favorites against the Michigan State Spartans, and that line has already climbed to 19.5 points in less than an hour, according to Vegas Insider.
The Spartans snuck into the top-25 this week after a close game with Indiana, where they failed to cover a 14-point spread.
The Buckeyes have covered in each of their last four games, only failing to do so against Florida Atlantic (-24) in the first contest of the season.
This matchup will be each team's third conference game. Both teams are undefeated against Big Ten opponents, though Michigan State has suffered a loss to Arizona State.
Ohio State and Michigan State clash at 7:30 p.m. Saturday at Ohio Stadium. ABC has the broadcast. The Buckeyes have taken the last three in the series, winning most recently, 26-6, in East Lansing last season. Overall, Ohio State holds a 32–15 edge against Michigan State.