Bruce Thornton had 24 points, John Mobley Jr. scored all 12 of his points in the second half, and No. 8 seed Ohio State held off a late rally by No. 9 seed Iowa for a 72-69 victory Thursday in the third round of the Big Ten Tournament. Ohio State (21-11) advances to play top-seeded and third-ranked Michigan in the quarterfinals on Friday. Thornton had a personal 10-0 run to give Ohio State its largest lead of the game at 51-35 with 13:55 remaining.