LAS VEGAS — Trying to beat Oregon at the rim with the game on the line is becoming a bad idea in this Pac-12 tournament. The long arms of Kenny Wooten are making sure of it. Elijah Brown led Oregon’s second-half comeback and Wooten finished it off with his second straight game-ending blocked shot, lifting the Ducks to a 68-66 win over Utah in the Pac-12 tournament semifinals on Thursday night. “It was a big play,” Oregon coach Dana Altman said.