Your leagues are scattered.
The same player can sit in a starter slot, a bench spot, or nowhere at all across your portfolio.
Your fantasy portfolio. Under control.
Every league. One clear view.
Manage your fantasy portfolio without missing the decisions that matter.
FantasySportsOS organizes your Sleeper portfolio, explains what changed, and brings the few decisions that matter to the front.
The problem
More leagues should not create more blind spots.
One player update can mean something different in every league. The hard part is finding where it changes a decision before the lineups lock.
Updates arrive without your context.
A status change tells you what happened. It does not tell you which of your teams need attention.
Manual checking repeats the work.
You open league after league just to learn that most of your lineups were already covered.
Product proof
See the decision, not just the news.
FantasySportsOS connects a player change to your exposure, separates affected leagues from actual decisions, and keeps already-covered lineups quiet.
What changed
A player’s availability moved.Where it matters
The player appears in 12 of your leagues.What needs you
Three lineups need review before lock.
How it works
Connect. Track. Lock.
Three steps from scattered leagues to a portfolio you can control.
Connect your leagues.
Bring your Sleeper portfolio together in one place.
Track exposure.
See which players affect which leagues—and how much they matter.
Lock your lineups.
Handle the important decisions before kickoff.
The transformation
From scattered updates to prioritized decisions.
Built for multi-league managers who have outgrown checking every lineup by hand.
Without FantasySportsOS
- League tabs opened one by one
- The same update investigated repeatedly
- Portfolio impact rebuilt from memory
- No clear place to start
With FantasySportsOS
- One connected Sleeper portfolio
- Exposure mapped across leagues
- Important decisions brought forward
- Covered lineups kept quiet
- A clear point when the work is done
Handle what matters, close the tabs, and get back to watching football.
Straight answers
Questions fantasy managers ask.
Does FSOS replace my league platform?
No. FSOS organizes and prioritizes your portfolio while you continue managing leagues through Sleeper.
Will FSOS choose my lineup?
No. FSOS identifies the decisions and context that deserve attention. You keep final authority.
What happens after I join?
Your email joins the private early-access list. It does not create an account or send a sign-in link.
Early access
Stop searching. Start deciding.
Connect your leagues. Track exposure. Lock your lineups.