Jared Sullinger scored 16 of his team-high 20 points from the free throw line, including 10 of Ohio State's 15 points in overtime to lead No.1 Ohio State past Northwestern 67-61.

Sullinger missed 10-of-12 field-goal attempts but connected on 16-of-18 free throw attempts.

The Buckeyes shot 3-for-15 from beyond the arc.