40-Man Roster Legend
Salary Information collected from Cot's Baseball Contracts. Figures listed are strictly base salaries, and do not include incentives, bonuses, buyouts, payments made by other teams, etc. Figures are in $ millions.

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Figures listed in blue = Club Option
Figures listed in green = Player Option
Figures listed in red = Vesting or Conditional Option
Yellow highlight = free agent
oo = Player has opt-out after season
arb = arbitration eligible
min = minimum salary, approximate minimum salary, or minor league split salary. In 2019, the league minimum is $555,000. 
m/a = Player will either receive min salary or be arbitration eligible, depending on accrued service time
faa = accepted free agent arbitration
80% = will be due at least 80% of prior year's contract
ST = Service Time (season end-2019). Measured in years.days. 172 days = 1 year of MLB service time. Generally, players are paid the minimum contract for service years 0 - 2.122, are arbitration eligible for service years 2.123 - 5.171, and are eligible for free agency after accruing 6 years of service time. These rules may also be contracted around, as players with under 3 years of service time may sign for above the minimum, and arbitration-eligible players may sign away their arbitration years.
Super Two Cutoff for 2019-20 off-season is 2.115.
OPT - options remaining after the 2020 season. 

*Through the end of the 2020 season. Players with 5+ years service time require player permission before being optioned, even if they have options remanining.  Certain other players have similar contractual provisions.