Boston College is just four days into spring workouts, but the program has already had its first casualty.
Eagles all-time leading rusher Montel Harris aggravated the left knee injury that cost him most of the 2011 season and will not participate in the remainder of spring practice, coach Frank Spaziani announced Tuesday.
Harris took part in the first day's workouts and complained of soreness afterward, according to Spaziani.
In August, Dr. Tom Gill performed an arthroscopic procedure on Harris' injured left knee. The running back missed the first three games of the season, returned for the fourth and fifth games and then missed the remainder of the season after aggravating the injury.
BC applied to the NCAA for a medical hardship waiver on Harris' behalf, allowing the senior a fifth year of eligibility in 2012.
Harris leads BC in career rushing yards (3,735), carries (786) and 100-yard games (22) and is third in touchdowns (27).
Jack McCluskey is an editor for ESPN.com and a frequent contributor to ESPNBoston.com. Follow him on Twitter.