Oregon suspended sophomore guard Dominic Artis and sophomore forward Ben Carter for selling team gear in violation of NCAA rules, the school announced.
The exact length of the suspensions has not been determined as the school self-reported the violation to the NCAA.
Both must donate to charity the value of team-issued apparel they sold because of those violations.
Artis averaged 8.5 points and 3.2 assists last season, while Carter averaged 2.4 points and 2.3 rebounds per game.
"Ben and Dominic are two good young men who made a poor decision that was against NCAA rules," said Oregon coach Dana Altman. "I feel that both regret their decisions and the impact that it has on their teammates and our university."
Oregon is ranked 19th in the preseason AP poll and opens the season Friday against Georgetown.
"I want to apologize to the university, Coach Altman and my teammates for selling apparel," Artis said. "I regret my actions and do not want this situation to define me or my character." “As a student-athlete at Oregon, I recognize that I have a responsibility to represent our team and our university at all times with the utmost of integrity," Carter said. "I regret the decision to sell the apparel and I am grateful to the NCAA and to the university for the opportunity to make amends.”