I like to play custom leagues with historical players - usually making a league with all the rookies season of a franchise from 1998-latest (which is know 2019).
So i usually create a MLB league with just AAA and AA then import all franchise rookies with the settings/players attached.
Sure doesn't look like the ratings are always just using the IMPORTED SEASON to calculate ratings. Some examples (see attached):
- Carson Kelley @ 2018 with 13/20 POWER and EYE
- Luke Voit @ 2017 with a 15/20 POWER
- Tommy Pham @ 2015 with 16/20 POWER and 14/20 EYE
Just some Cardinals example but it seems in those cases it just more than just their imported season to calculate rating as all those players breakouts haven't happened yet.
rookies_team_1998-2019_hi1.txt