Jackson Shelstad made two free throws with seven seconds left to put No. 15 Oregon ahead for good as the Ducks defeated host Ohio State 73-71 on Thursday in Columbus.Shelstad made the shots for a 72-71 lead before Bruce Thornton missed an open 3-pointer with two seconds left. Nate Bittle added a foul shot with a second remaining for the final point for Oregon (14-2, 3-2 Big Ten).Shelstad tied a career high with 24 points and Bittle added 21 and a team-high eight rebounds.Earlier, with Ohio State trailing by one, Thornton stole the ball, which led to two free throws by John Mobley Jr. with 12.6 seconds left to put the Buckeyes (10-6, 2-3 Big Ten) ahead 71-70.Thornton led Ohio State with 20 points. Mobley had 16, Sean Stewart put up 14 points and nine rebounds and Micah Parrish added 11 points.Oregon trailed by nine until mounting a steady comeback to pull to within 67-65 on a 3-pointer by Keeshawn Barthelemy with 2:14 remaining.The Ducks took a 68-67 lead on a triple by Shelstad, followed by a jumper from the corner by TJ Bamba with 41 seconds left.Evan Mahaffey trimmed it 70-69 off a layup for Ohio State with 23 seconds left.