What is redshirting?

Answer 1

RedshirtingRedshirting is when a player is allowed to practice with a team for a season and still retain 4 years of eligibility, as long as the player doesn't play in any games.

Redshirting was originally intended as a way for injured players not to lose a year of eligibility due to injury. Now, however, it is also frequently used for incoming freshmen, to give them collegiate experience (although not in games) and for a variety of other reasons.

Redshirting is only done in college.