Calvin Haynes had a career-high 27 points and Omari Johnson added 16 points and 12 rebounds as Oregon State defeated Charlotte 83-70 on Wednesday night.
Jared Cunningham finished with 13 points and six steals for the Beavers (2-2) and freshman Devon Collier scored 12 in his first start.
Jamar Briscoe hit five 3-pointers and finished with 20 points for the 49ers (2-4), who were playing their fourth game in seven days. Shamari Spears had 12 points, and Derrio Green added 10 points and nine assists.
Oregon State led 44-35 at halftime and used an 11-0 run in the second half to push their lead to 57-40 with 15:22 left.
The Beavers bumped their lead to 20 points with 12 minutes remaining before the 49ers narrowed the deficit to eight in the closing minutes.