Tim Dierkes of the site MLB Trade Rumors confirmed last night that the Super Two cutoff for arbitration eligibility in 2017 is 2.131.
Seems a bit out of place right now, but…Super Two is confirmed at 2.131.
— timdierkes (@timdierkes) October 27, 2016
Translation: Players with at least two years and 131 days qualify for an extra year of arbitration.
By contract, major league players are under team control for six years of service time. The first three of those they work for whatever the team wants to pay them, a figure bounded only by the league minimum salary established by the Collective Bargaining Agreement between MLB and the MLB Players Association.