Gene Wojciechowski discusses Oregon quarterback Vernon Adams Jr.'s evolving role with the Ducks and where he's felt the most pressure during his transition to the team. (1:34)

Oregon quarterback Vernon Adams Jr., who was knocked out of last week's season opener after taking a hard hit in the fourth quarter, also is dealing with an injured index finger on his throwing hand, a source told ESPN.

Adams has been icing his hand, according to the source. He played Saturday night in the seventh-ranked Ducks' showdown with No. 5 Michigan State.

Vernon Adams Jr. was knocked out of his Oregon debut after taking a hard hit in the fourth quarter. Scott Olmos/USA TODAY Sports

The source told ESPN that Adams suffered the finger injury in Oregon's season-opening victory against Eastern Washington.

Adams repeatedly had stated he expected to play Saturday night in East Lansing despite the scary hit that ended his debut with the Ducks. His availability was important for Oregon, which beat Michigan State in Eugene last season.

Adams passed for 246 yards and two touchdowns while rushing for 94 yards on 14 carries in Oregon's 61-42 victory last weekend.