Your fantasy edge,
every week.
Margin Fantasy Sports turns your league's data into decisions: data-driven projections, matchup forecasts, and waiver targets — for basketball today, hockey, baseball and football on the way.
How it works
Three steps between you and a better lineup decision.
Connect your league
Paste a league link or ID. Public leagues pull instantly; private leagues need a one-time approval on your provider's own site. We never see your password.
See your edge
One global projection board per sport, then your league layered on top: your roster, your matchup, your waiver wire.
Win the week
Schedule-aware matchup forecasts, best-claim rankings, and a claim simulator that shows the before-and-after.
Projections
One board per sport. Only the league layer is yours.
Basketball
9-category projections board with Preseason and rest-of-season views, volume-weighted shooting, and GP-adjusted season values.
Hockey
Skater + goalie combined board across 13 categories, with age curves, deployment factors, and z-score color coding.
Baseball
The deepest projection culture in fantasy. Our baseball board is where the modeling goes deepest.
Football
Rankings-led weekly tools over the same league infrastructure.
Connects where you play
Three providers, one consistent league layer.
Yahoo
Official OAuth. You approve on Yahoo's own page — we never see your password.
ESPN
Public leagues need just the league ID. Private leagues paste two session cookies from your own logged-in browser.
Fantrax
Official read-only API. League ID is all it takes — no login at all.