An unsigned player on an MLB Reserve List (40-man roster) who has accrued at least three but less than six years of MLB Service Time is automatically eligible for salary arbitration.
Also, any unsigned player on an MLB 40-man roster who has accrued at least two years but less than three years of MLB Service Time and who accrued at least 86 days of MLB Service Time during the previous season can qualify for salary arbitration as a so-called "Super Two" if the player is among the top 22% in MLB Service Time of players in that group (rounded to the nearest whole number).