(AP Photo/Paul Sancya)INDIANAPOLIS – Oregon State opened the season picked to finish 12th in its conference but instead won its first Pac-12 Tournament title. Roman Silva scored 16 points and Oregon State took advantage of Tennessee's icy perimeter shooting to become the latest No. 12 seed to win its opening NCAA Tournament game, beating the fifth-seeded Vols 70-56 in the Midwest Region Friday night. “We know there was some doubt and we had to ignore all that,” Oregon State coach Wayne Tinkle said. Oregon State was picked to finish last in the Pac-12 and exceeded expectations by finishing sixth in the regular season.