"It just worked out better in terms of scheduling," Walker said.
Walker helped Buford win a third straight state championship with a 31-3 win over Charlton County in December. The win was Buford's 45th in a row, capping a perfect 15-0 season.
Walker (5-11, 195, 4.45) also made history in the victory, ripping off a 35-yard touchdown run with 10:01 left in the game. The score was his 46th of the year, setting a new Georgia state record and breaking the old mark held by Herschel Walker.
Walker ended the night with 211 yards, giving him 2,408 yards for the season. That follows his junior year, when he had 1,986 yards and scored 26 touchdowns.
Walker had to cancel a scheduled official visit to Ohio State in December because of the playoffs.
Walker opened his visits with a trip to Stanford this past weekend.
"It went well," Walker said. "It was great. Actually, it was the first time I've ever been to California. That alone ... if you know, it's kind of like it's own world out there. My host was J.R. Lemon, a running back from here in Georgia. I knew of him before I went there. It was good to spend some time with him."
Walker said he will take a Saturday-Monday visit to OSU this weekend because of the Martin Luther King Jr. holiday on Monday.
"I'm working with (running backs coach Tim) Spencer on getting everything scheduled," Walker said.
After OSU, Walker said he will see Notre Dame Jan. 23. He has several schools in mind for visits over the weekend of Jan. 30.
"That Notre Dame visit has been in the works for some time," Walker said. "After that, I have several schools I am looking at for that last visit. Maybe USC or Alabama or Tennessee. Those are a few of the schools I'm looking at."
Walker, ranked as the nation's 26th-best running back by theinsidersrecruiting.com, is also a strong student with a 4.0 GPA and an SAT score in excess of 1100.