The defensive tackle tore the ACL in his right knee last week during player-run practices on Cromwell Field.
Bigelow was back on Cromwell Field on Tuesday morning following the Trojans conditioning drills for player-run practice.
He did not participate in the practice, but walked around without any noticeable impairment. Bigelow was not wearing a USC t-shirt, making the appearance he could have potentially participated in the conditioning portion of USC workouts (which are closed to the media).
Bigelow did not stop to talk to the media following the workout.
Defensive lineman Leonard Williams told Scout that players were instructed not to conduct offensive line vs. defensive line drills during the player-run practice because of the injury Bigelow suffered the previous week.
Williams would not comment when asked what kind of injury Bigelow suffered.
Bigelow was expected to compete for a starting spot in the defensive line rotation when the Trojans open fall camp on Aug. 4.
He was a Scout five-star recruit in USC's 2012 recruiting class.