LAS VEGAS (AP) — Ethan Thompson scored 16 points, Rodrigue Andela added 13 and Oregon State withstood a late rally to beat top-seeded Oregon 75-64 in Pac-12 Tournament semifinals. The fifth-seeded Beavers reached the conference semifinals for the first time since 2012 and dominated early, building a 19-point lead by the midpoint of the second half. The Ducks stormed back, going on a 15-3 run to pull within 61-56 with 4 1/2 minutes left. Oregon State’s Jarod Lucas hit a 3-pointer to stop the run and the Beavers quickly pushed the lead back to 12. Oregon State is in the Pac-12 title game for the first time since 1988.