Payton Sandfort scored 17 points and Josh Dix added 16 to help 15th- seed Iowa pull way in the second half for a 77-70 victory over No. 10 seed Ohio State in a first-round game of the Big Ten tournament in Indianapolis on Wednesday.Iowa (17-15) plays No. 7 Illinois on Thursday. The Illini beat the Hawkeyes 81-61 on Feb. 25.Dix was 0 for 7 from the floor and did not score in an 82-65 loss to the Buckeyes in Columbus on Jan. 27, but he had nine points in the second half on Wednesday.Brock Harding had 15 points and Pryce Sandfort 10 for the Hawkeyes.Iowa used a 7-0 run to go ahead 68-61 with 3:46 to go, but the Buckeyes pulled to within 72-70 on a jumper by Bruce Thornton with 45 seconds left.Harding then responded by nailing an open 3-pointer from the right side with 16 seconds left, and Payton Sandfort made two foul shots with seven seconds to go.Thornton led the Buckeyes (17-15) with 24 points, and Devin Royal added 17.The Buckeyes entered the game projected as one of the last four teams making the 68-team NCAA Tournament field, and they likely needed a win to maintain their hope of being selected for the first time in three seasons.