Organizational Structure
Each LDB franchise has three tiers: Majors, AAA, and AA.
Majors
The Majors level is a 25-man roster and represents the active players on the team whose performance may affect scoring. It closely resembles an MLB franchise. All 25 players are available for active duty, and are broken down into the following positions:
| Hitters | Pitchers |
|---|---|
| Catcher | Starting Pitchers (5) |
| First Base | |
| Second Base | |
| Short Stop | |
| Third Base | Relief Pitchers (6) |
| Left Field | |
| Center Field | |
| Right Field | |
| Designated Hitters (2) | |
| Bench (4) | |
| Disabled List (3) | |
Positional Eligibility
Hitters
For hitters, a player is eligible for a position if (1) that player made 20 appearances in that position during the previous season or (2) the player appeared at that position for 50% of games in April of the current season, or, after April, appeared at that position a total of 15 times during the season. Until a hitter meets one of these thresholds, he may bat as a designated hitter only.
Pitchers
For pitchers, to be eligible as a starting pitcher, a player must have appeared as a starting pitcher in one game during the previous or current season. To be eligible as a relief pitcher, a player must have appeared as a relief pitcher in one game during the previous or current season.
Disabled List
A player in the Majors is eligible to be on the Disabled List (DL) when he is on the MLB DL. See Internal Transactions for other rules related to the DL.
AAA
The AAA tier is a roster of any seven players, hitters or pitchers. See Internal Transactions for rules relating to service time and waivers, which may affect a team's choice to promote from, or demote to, AAA.
AA
The AA tier is a roster of unlimited rookie players signed in the AA draft. See Internal Transactions for rules relating to the consequences of promoting a player out of AA.