COLUMBUS, Ohio -- Several fires were set near Ohio State's campus after the No. 2 Buckeyes beat Michigan 14-9 Saturday and clinched a spot in the national title game.

At least a dozen small fires were reported near campus after the game, police said. Trash bins had been ignited, along with furniture in the streets.

Eight people were arrested for disorderly conduct and open container violations, police said.

Fans also swarmed Ohio Stadium's field moments after the victory, throwing pieces of sod and climbing onto the south goal post.

As more fans rushed the field and pushed toward the south goal post, officers released pepper spray. Some people threw clumps of sod at the officers, while others said they were taking chunks of grass to sell on the Internet.

Some fans eventually climbed the goal post but could not take it down. Officers formed a line across the field, and people started filing out of the stadium.

Ohio State (13-0) will play in the Tostitos Fiesta Bowl on Jan. 3 for the national championship.