The 2014 national title-winning Buckeyes were largely built in Ohio.
The entire OL from tackle to tackle was in-sourced from the Buckeye State: Taylor Decker (Vandalia) Billy Price (Austintown) Jacoby Boren and Pat Elflein (Pickerington) and team uncle, Darryl Baldwin (Solon).
All three starting receivers were natives, too: Devin Smith (Massilon) Jalin Marshall (Middletown) and Evan Spencer (Pops is from Martins Ferry; Evan was "from" the Chicago burbs because Dad played for the Bears). They were either Ohioans or Ohioans*.
Braxton Miller (Huber Heights) was the B1G's best player and starting QB in fall camp, but by the time the CFP title game happened it was Cardale Jones (Cleveland) running the offense.