I wrote a script that automatically grabs the current roster of every MLB team and saves it as a ROS file.  This script runs every day at 12:00 PM.  These files are available from the .ROS Files tab at the top of every page.

ROS files are used by Retrosheet’s box.exe, bevent.exe, and bgame.exe programs.  They are plain-text, comma-delimited files having the format: ID, Last Name, First Name, Batting Hand, Throwing Hand, Team Abbreviation, Position Abbreviation.

ID can be any unique ID for the player.  Retrosheet has a unique ID for each player based on first and last name.  For instance, Derek Jeter is jeted001.  Other databases use different formats.  The files that I generate use the 6 digit unique ID used by mlb.com.

The batting hand value can be either R, L, or B (both – switch hitter).

The throwing hand value can be either R or L.

The team value is a three-digit representation of each team.  Retrosheet has established abbreviations for each team.  They are:ANA, ARI, ATL, BAL, BOS, CHA (Chicago American – Whit Sox), CHN (Chicago National – Cubs), CIN, CLE, COL, DET, FLO, HOU, KCA, LAN, MIL, MIN, NYA, NYN, OAK, PHI, PIT, SDN, SEA, SFN, SLN, TBA, TEX, TOR, and WAS.

The position value can be either: P, C, IF, OF, or DH.

As an example, here are the first few lines from the current Atlanta Braves’ ROS file.


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