Oregon running back De'Anthony Thomas is unlikely to play against Colorado this weekend after emerging from practice wearing a boot on his injured right ankle.
Running backs coach Gary Campbell told reporters on Tuesday that the speedy junior's return is "not going to happen" when the No. 2 Ducks (4-0, 1-0 Pac-12) visit Colorado (2-1, 0-0) on Saturday.
Thomas was injured on the opening kickoff of second-ranked Oregon's 55-16 victory over California on Saturday night, slipping on turf that was slick from a driving rain.
Thomas has rushed for 338 yards rushing and six touchdowns this season. He also has 485 all-purpose yards through three games.