Multi-platform
Cross-Platform Fantasy Football League History
Long-running leagues move platforms. League History is built to preserve continuity when a league changes from Yahoo to Sleeper, ESPN to Sleeper, or uses external history files.
Unify seasons across platforms
Keep one league story even when the platform changes, using stable manager and franchise mapping.
Normalize the data model
Bring standings, matchups, drafts, players, transactions, and league settings into one consistent analytics layer.
Keep the record book intact
All-time records, title counts, head-to-head history, and manager careers continue across platform migrations.
Questions This Page Answers
Can I combine fantasy league history across platforms?
Can I keep records after moving from Yahoo to Sleeper?
Can ESPN and Sleeper seasons be one league?
Can I import old spreadsheet history?