EUGENE -- Oregon practiced without quarterback Justin Herbert and wide receiver Dillon Mitchell on Tuesday, as the Ducks' top two offensive players remain in concussion protocol.
Backup QB Braxton Burmeister worked with the first-team offense and Tyler Shough worked with the second-team. Johnny Johnson III, who typically works with the second-team wide outs, was with the starters in the absence of Mitchell.
The Oregonian will update this story.