The 2018–19 Oregon State Beavers men's basketball team represented Oregon State University in the 2018–19 NCAA Division I men's basketball season. The Beavers, led by fifth-year head coach Wayne Tinkle, played their home games at Gill Coliseum in Corvallis, Oregon as members of the Pac-12 Conference. They finished the season 18–13, 10–8 in Pac-12 play to finish in a three-way tie for fourth place. They lost in the quarterfinals of the Pac-12 tournament to Colorado. Despite having 18 wins and a winning conference record, they failed to get an invitation to the National Invitation Tournament, and were also ruled out of the College Basketball Invitational.
Previous season The 2017–18 Beavers finished the 2017–18 season 16–16, 7–11 in Pac-12 play to finish in tenth place. They defeated Washington in the first round of the Pac-12 tournament before losing in the quarterfinals to USC.
Off-season Departures Name Num Pos. Height Weight Year Hometown Reason for departure JaQuori McLaughlin 0 G 6'4" 185 Sophomore Tacoma, WA Transferred to UC Santa Barbara Ronnie Stacy 2 G 6'4" 200 Senior Alexander City, AL Graduated Drew Eubanks 12 F/C 6'10" 250 Junior Troutdale, OR Declared for 2018 NBA draft Tanner Sanders 15 G 6'5" 210 RS junior Corvallis, OR Left team Xavier Smith 22 G 6'4" 180 Freshman Seattle, WA Transferred to Idaho Kendal Manuel 24 G 6'4" 190 RS sophomore Billings, MT Transferred to Montana Cheikh N'diaye 31 C 7'0" 240 RS senior Dakar, Senegal Graduated Seth Berger 32 F 6'8" 215 RS senior Seattle, WA Graduated Ben Koné 34 F 6'8" 235 Sophomore San Jose, CA Transferred
Incoming transfers Name Num Pos. Height Weight Year Hometown Previous school Payton Dastrup 15 C 6'10" 250 Junior Mesa, AZ BYU Kylor Kelley 24 F 7'0" 205 RS Junior Gervais, OR Lane CC
2018 recruiting class
2019 recruiting class
Roster
Schedule and results
!colspan=12 style="background:#; color:#;"| Exhibition
!colspan=12 style="background:#; color:#;"| Non-conference regular season
!colspan=12 style="background:#;"| Pac-12 regular season
!colspan=12 style="background:#;"| Pac-12 tournament
References