The freshman point guard, whom the website Rivals rated a three-star recruit, finished his lone season in Corvallis averaging 4.4 points and 1.4 assists in 12.2 minutes per game.
"We thank Derrick for his contributions and wish him nothing but the best," head coach Wayne Tinkle said in a statement released Thursday. "Coming off a trip to the NCAA Tournament, we are excited about the direction of our program and the student-athletes we have on our team."
Attempts to contact Bruce about his decision were not immediately successful.
After falling in and out of the rotation throughout the season, Bruce came on late in the year after a foot injury sidelined second-leading scorer and rebounder Tres Tinkle. The 6-foot-3 guard averaged 14.8 points in the season's last four games and had a team-high five assists in the Beavers' first round NCAA Tournament loss to VCU.
Bruce graduated from Colony High School in Ontario, California, where he transferred after suffering a broken ankle during the previous season at Centennial High School (Corona, California). He spent the 2014-15 school year at West Oaks Academy in Orlando and committed to Oregon State as part of the recruiting class ESPN ranked 19th in the nation and included Tres Tinkle, Stephen Thompson Jr. and Drew Eubanks.
Expected to be an offensive distributor and effective defender given his 6-foot-8 wingspan, Bruce enrolled early at Oregon State last spring but acknowledged during the season that the transition to college classes was difficult.
"When I first got here, school was overwhelming," he said in January. "It made me not want to go to the gym as much because I had so much stuff to do in class and then coach was on me about getting it done. Sometimes I would miss going to the gym to do some work."
He started the year in a shooting slump but rebounded late in the year, connecting on 10 of 20 three-pointers in his last four games. He shot 51.2 percent from three-point range but 26 percent inside the arc.
Oregon State will have a number of guard options next season despite the departures of Bruce and senior Gary Payton II, a two-time first team all-Pac-12 selection and the Beavers' leader in points, rebounds, assists and steals last year.
The team will return two-year starter Malcolm Duvivier (6.1 ppg, 2.2 apg) and Thompson (10.6 ppg), the team's third-leading scorer who came off the bench until Tinkle's late-season injury. OSU will also add four-star recruit JaQuori McLaughlin and Montana native Kendal Manuel, a late addition to last year's recruiting class who missed the year with a broken leg.
The transfer means that Oregon State will have three available scholarship spots entering an upcoming April evaluation period. Beavers head coach Wayne Tinkle said in an interview with The Oregonian/OregonLive prior to the news of Bruce's transfer that the team would have particular interest in adding a rebounding presence and combo guard or wing to fill out its roster.
Oregon State will have two seniors (Duvivier and center Cheikh N'diaye) on its roster next season, a class imbalance that has sparked the program's interest in junior college transfers. The Beavers could also explore the market for graduate transfers, players who have graduated from their four-year university and are eligible to play immediately instead of sitting out for a season.
-- Danny Moran