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Ohio State's championship defense is about to get a lot more challenging.

After playing a relatively easy schedule so far, the No. 3-ranked Buckeyes will host No. 9 Michigan State on Saturday and travel to No. 12 Michigan next week.

Here's how to watch Buckeyes-Spartans online.

When: Saturday, Nov. 21 at 3:30 p.m. ET
Live Stream: WatchESPN app

Thumbnail photo via Matthew Emmons/USA TODAY Sports Images