McMillan becomes the fourth four-star linebacker to join OSU's class, joining three Ohioans in Cleveland St. Ignatius' Kyle Berger, Akron St. Vincent-St. Mary's Dante Booker and Cincinnati Moeller's Sam Hubbard.
But McMillan is the first middle linebacker to commit to the Buckeyes in the class, and he carries sterling credentials, including the No. 5 ranking at his position and No. 53 ranking in the nation regardless of position.
He is the eighth top 100 player to commit to OSU in the class, tying the Buckeyes with Alabama for most in the nation, and boosts what previously had been the No. 8 class in the country to 18 members.
The Hinesville (Ga.) Liberty County star and Under Armour All-American had 152 tackles on defense and nine touchdowns at running back this year and brings strong hitting ability to the table at 6-2, 230 pounds.
"He is a big kid with a great frame and he is very strong," Scout analyst Chad Simmons said. "He is a good striker at linebacker and he can bring that thump when he makes a play. His biggest strength is attacking the ball downhill. He can still improve on his play side to side and his ability to drop back into pass coverage. He is a perfect inside backer that attacks."
Stay tuned to BuckeyeSports.com for more on McMillan's pledge.