Boise State junior tailback D.J. Harper has torn the anterior cruciate ligament in his left knee for the second straight season and will miss the remainder of 2010. Harper was injured while trying to make a cut during Saturday's game against Oregon State. Harper has rushed for 160 yards and two touchdowns this season in a tailback tandem with Doug Martin. Harper also has four catches for 36 yards. He had a 71-yard touchdown run against Virginia Tech. Senior Jeremy Avery likely will step into Harper's role. Avery, a 1,000-yard rusher last year, has been used in special packages this season while Martin and Harper handled the base plays.