On my installation the Master.csv file, that NoOne mentions above, is located at:
C:\Users\Home\Documents\Out of the Park Developments\OOTP Baseball 20\stats\Master.csv
Tip: I've saved a copy of this file in a totally separate directory on my PC so I don't do something stupid and corrupt this file within the installed environment.
I just did an import of 528 players to the teams I had set up in my league, I created an import.csv file i Excel. It's just one column and the syntax was:
playerid,year,team
The player id is just that, you can get it from the second columns of the Master.csv file, or from the baseball-reference.com. For example Babe Ruth is 'ruthba01' (
https://www.baseball-reference.com/p...ruthba01.shtml). The year is the year you want the player to come in, for all of mine I used the year they debuted in the league which I believe dictates their age in your league. And team is the abbreviation of the team you want to add them to.
Example - Babe Ruth
ruthba01,1919,DAY - (note: no spaces before or after the commas)