EUGENE -- Oregon's linebacker corps incurred blow in the loss at Washington State.
Backup Isaac Slade-Matautia, a redshirt-freshman, suffered a shoulder injury in Saturday's loss to the Cougars, according to Oregon coach Mario Cristobal, and is undergoing further testing but is not listed on this week's depth chart.
"We're getting some work done on him, an MRI, some X-rays," Cristobal said.
Slade-Matautia had one tackle against WSU and has 20 tackles with two for loss and a pass breakup for the Ducks this season.
Sophomore Keith Sims, who has 14 tackles this season, is listed in Slade-Matautia's spot on the depth chart and will take over his role on the outside and inside.