Oregon State 2, Arizona State 0
At Tempe, Arizona
The Beavers got two runs on two hits in the first inning, and their impeccable pitching did the rest in the Pac-12 opener for both teams.
Luke Heimlich (4-0, 0.25 ERA) gave OSU eight innings, allowing two hits, and Max Engelbrekt set down the Sun Devils 1-2-3 in the ninth for his fifth save, fanning two.
Oregon State, ranked No. 1 in the nation in one poll, iproved to 15-1 overall.
ASU fell to 9-8.
The three-game series continues at 4 p.m. Friday and concludes at noon Saturday.
OSU's sixth consecutive conference-opening victory began with Trevor Larnach and Andy Atwood delivering RBI hits with two out in the first. Larnach hit a ball into the left-center field gap for a triple that scored KH Harrison from first. Atwood followed with a liner that went off the shortstop's glove deep in the hole.
Heimlich walked two batters and struck out eight.
Oregon State finished with eight hits and left 10 men on base.
All five Oregon State entrants wound up in the consolation bracket after going 1-1 on Day 1 of the NCAA championships at St. Louis, Missouri.
Seniors Joey Palmer (133 pounds) and Joey Delgado (149), juniors Jack Hathaway (141) and sophomore Corey Griego (197) all won their first match of the day. Cody Crawford (heavyweight) lost his opening match, then won 1-0 in the consolation bracket.
The 25th-ranked Oregon Ducks defeated San Diego Stdate 4-0 on the first day of the SP Invite in San Diego, California.
Oregon (12-2) has won four consecutive matches and will go up against Iowa in Friday's semifinals.
The Aztecs fell to 5-8.
Oregon sophomore Thomas Laurent won at No. 1 singles, 6-2, 6-0, extending his school-record streak to 17 wins in a row.