Roster size

The roster limit for a Northern League club is 22 players. An additional two players may be on the disabled list during the regular season. Of those 22 players, a maximum of four may be veterans and a minimum of four must be rookies. The remaining players will be designated limited service players. A club may carry a maximum of nine LS-4, LS-5, and veteran players. a. During the pre-season, a maximum of 28 players may be under contract at any one time without regard to classification. Tryout camp drafted/signed players do not count as part of the 28 players under contract. The 22 active player roster must be met three days before the start of the regular season.

Definitions

a. Year of Service: A year of service for Northern League players is 75 official at bats or more in a National Association or independent league or leagues, or 30 innings or more pitched in a National Association or Independent league or leagues, in any season prior to the present calendar year. For Independent League seasons (except Atlantic League), the first two years of service equals one National Association year. For Rookie affiliated leagues, the first two years of service equals one National Association year. For foreign players, the classification and salary level will be determined by the league office.
b. Rookie: A player with less than one year of service.
c. LS-1: A player with one year of service.
d. LS-2: A player with two years of service.
e. LS-3: A player with three years of service.
f. LS-4: A player with four years of service.
g. LS-5:: A player with five years of service.
g. Veteran: A player with six or more years of service. If a player has five or more years of service but has not reached the age of 26 by September 1 of that season, he will be considered an LS-4. If he has not reached the age of 24 by September 1 of that season, he will be considered an LS-3.