Jadrian Tracey had 19 points and four steals and Oregon overcame a 13-point, second-half deficit to deliver an 80-70 overtime victory over Portland on Tuesday night in nonconference play at Eugene, Ore.Keeshawn Barthelemy scored 11 of his 13 points after halftime for the Ducks (3-0). Jackson Shelstad had 13 points, 10 rebounds, five assists and three steals and Nate Bittle added 13 points and nine rebounds for Oregon.The Ducks scored the first 11 points of overtime after scoring 18 of the final 25 points in regulation.Vincent Delano and Vukasin Masic had 12 points apiece for the Pilots (1-2). Chris Austin had 11 points and Todd Jones added 10 points and 10 rebounds.Tracey scored the first three points of overtime as Oregon took its first lead since 17-16 in the first half. He later sprinted down court for a fastbreak slam to make it 76-67 with 1:16 remaining as the Ducks averted the upset bid of the Pilots.Earlier, Barthelemy made two treys during an 8-0 run as Oregon trimmed an 11-point deficit to 60-57 with 2:59 remaining in regulation.Austin made two free throws to give Portland a 67-62 lead with 35.6 seconds to go. Barthelemy drained a 3-pointer to cut the Oregon deficit to two with 29.9 seconds left.Austin Rapp missed two free throws with 27.1 seconds left and Oregon took advantage with Tracey converting a layup with nine seconds left to tie it.TJ Bamba added 10 points for the Ducks, who shot 40.6 percent from the field, including 7 of 31 from 3-point range.