Thomas suffered a sprained ankle on the opening kickoff against California on Sept. 28 and hasn't played since. However, despite not practicing, the junior said Wednesday he's participated in some drills and has even jogged this week.
"I'm not really sure," Thomas told reporters about his status for Saturday. "It's still early in the week, and I'm just trying to work hard and get back to normal.
"I'm walking around pretty good, just staying focused on getting better and just recovering. It's nice to walk around with two shoes on. That's a great feeling. I'm just trying to get better from there."
Thomas has rushed for 338 yards rushing and six touchdowns this season. He has 485 all-purpose yards in three games.
Byron Marshall has filled in admirably for Thomas, rushing for 122 yards last week against Colorado to give him a team-leading 448 this season. Backup Thomas Tyner has five touchdowns and is averaging 5.8 yards per carry.
Oregon ranks third in the nation in rushing offense, behind Baylor and New Mexico.