Oregon State's Jefferson faces challenge in No. 9 Oregon

Oregon State offensive linesman Joshua Gray (67) lifts Oregon State running back Jermar Jefferson (6) into the air after Jefferson scored a touchdown during the second half of an NCAA college football game against Washington State in Corvallis, Ore., Saturday, Nov. 7, 2020. Washington State won 38-28. (AP Photo/Amanda Loman)

Oregon State running back Jermar Jefferson (6) outruns Washington State linebacker Ron Stone Jr. (10) into the end zone to score a during the second half of an NCAA college football game in Corvallis, Ore., Saturday, Nov. 7, 2020. Washington State won 38-28. (AP Photo/Amanda Loman)

Oregon State running back Jermar Jefferson (6) weaves past Washington State linebacker Justus Rogers (37) and linebacker Brennan Jackson (80) during the second half of an NCAA college football game in Corvallis, Ore., Saturday, Nov. 7, 2020. Washington State won 38-28. (AP Photo/Amanda Loman)

Oregon State running back Jermar Jefferson (6) runs 75-yards to score a touchdown on the first play of an NCAA college football game against California in Corvallis, Ore., Saturday, Nov. 21, 2020. (AP Photo/Amanda Loman)