This is by far my favorite league I've ever been in. We use real life players, prospects, and draftees in all aspects of the game. Our sim schedule during the season is 1-day sims everyday.
We will be updating to the newest OOTP18 when it is released for this upcoming season.
Our offseason is a legit offseason from Nov-March when spring training begins. It might seem long but we use the site for UFA signings, Rule 5 draft, a supplemental (Int'l) draft, and so on which keeps the offseason rolling along well. Plus you can write articles and such if you're into that sort of thing relating to your organization, players, front office, etc...
Check out our sites:
cbabaseball.com
cbaball.com