(AP Photo/Michael Conroy)INDIANAPOLIS – Marcus Zegarowski scored 20 points to help Creighton beat Ohio 72-58 on Monday in the NCAA Tournament, securing the program's first trip to the round of 16 in 47 years. The last time Creighton made it to the regional semifinals, it was 1974 and the tournament field had 25 teams. He also came up with some key late plays to keep Creighton in control after Ohio clawed back within 65-56. AdBIG PICTUREOhio: This was the Bobcats' first NCAA Tournament trip since 2012, when they made a surprise run to the Sweet 16 before losing to No. Creighton: The Bluejays had never won back-to-back games in the same NCAA Tournament.