How fantasy platforms store your league's past, what they lose, and how to read the numbers that separate a good team from a lucky one.
Your Sleeper league ID is the long number in the league URL. Here is where to find it on desktop and in the mobile app, and what to do when you only have the app.
2 min read
Sleeper keeps every season you have played, but only shows you one at a time. Here is what it stores, how far back it goes, and how to see all of it together.
4 min read
Your all-play record is how you would have done against every team every week. It is the cleanest way to separate a good team from a lucky one — here is how it works and how to read it.
4 min read
The records worth keeping for a long-running league, why last place matters more than you think, and the conventions to settle before anyone argues about them.
5 min read
Platform migrations lose everything that came before. What actually survives a move, what does not, and how to preserve the seasons you already played.
4 min read
Four measurable things separate a good fantasy team from a fortunate one: all-play, luck differential, lineup efficiency and points against. What each one tells you.
5 min read
ESPN keeps your past seasons, but access got harder in 2025. Where League History lives, how far back it goes, what changed for outside tools, and what to save before you lose it.
5 min read
Yahoo keeps league history back to 2007 and is the most generous of the big platforms about it. Both routes to your past seasons, what each one shows, and where the real detail hides.
4 min read
The problem with last-place punishments is never the idea, it is enforcement. What makes a punishment stick, why it has to be agreed before the draft, and how to make ducking it impossible.
5 min read
The rules that cause arguments are never the scoring settings. What actually belongs in a league constitution, the clauses leagues wish they had written, and how to amend it without a fight.
6 min read