<p>LAS VEGAS — 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 Friday night.</p>
<p>The fifth-seeded Beavers (16-12) 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.</p>
<p>The Ducks (20-6) 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.</p>
<p>Picked to finish last in the Pac-12, Oregon State will play in its first Pac-12 title game since 1988. The Beavers will face the winner between Colorado and No. 23 Southern California in Saturday’s championship game.</p>
<p>Oregon had a hard time with Oregon State’s pressure early and struggled from the perimeter all night, going 6 for 25 from the arc after making 15 3-pointers in a win over the Beavers on Sunday.</p>
<p>Chris Duarte, LJ Figueroa and Eugene Omoruyi had 14 points each for the Ducks.</p>
<p>The rivals split the season series, with the Ducks beating the Beavers by 13 in the regular-season finale to win their second straight Pac-12 title.</p>
<p>Oregon beat Arizona State by 18 to get to the tournament semifinals and Oregon State outlasted No. 4 seed UCLA by four.</p>
<p>The rivals traded runs throughout the first half of the third go-round.</p>
<p>The Beavers had the early advantage Friday night, holding the Ducks without a field goal for 5 1/2 minutes to build a seven-point lead.</p>
<p>Oregon scored 10 straight points, then Oregon State went on a 12-3 run to go up 38-26.</p>
<p>The Beavers led 38-28 at halftime and kept building from there. </p>
<p>Thompson hit a pair of early 3-pointers in the second half and Oregon State made six of its first 10 shots to push the lead to 55-36.</p>
<p>UP NEXT</p>
<p>Oregon State will play the Colorado-USC winner in Saturday’s championship game.</p>
<p>Oregon should be in good shape to make the NCAA Tournament on Selection Sunday.</p>
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