Oregon redshirt freshman wide receiver Darren Carrington failed a drug test administered by the NCAA and has not traveled with the team to Texas for the national title game on Monday night, according to Aaron Fentress of CSNNW.com.
Carrington's test was positive for marijuana.
Carrington had 37 receptions for 704 yards and four touchdowns during the regular season, ranking fourth on the team in receptions and second in total receiving yards.
He caught seven passes for 165 yards and two touchdowns in Oregon's Rose Bowl 59-20 playoff victory over the Florida State Seminoles last weekend.
Oregon can still try to appeal Carrington's suspension, but if he is benched for the national title game in Arlington, the Ducks will be without him and fellow redshirt freshman receiver Devon Allen, who was injured during the opening kickoff of the Rose Bowl.
Carrington and Allen accounted for 78 receptions, 1,388 receiving yards and 11 touchdowns for the Ducks this year.