Connect league

League power rankings

Rank your dynasty league.

Choose your platform and paste a public league ID or URL. Preview your rankings before creating an account.

Connect Sleeper

Live

Find the 18–19 digit ID in General League Settings.

The fastest route from a public league to a full dynasty owner workspace.

Read-onlyNo platform passwordPublic leagues only

Supported league connections

Start with a public league URL or ID. rosterrr reads league data without your fantasy platform password and builds a board for comparing teams. Available roster, scoring, and draft pick details depend on what each platform exposes.

Sleeper
Use the league URL or the 18–19 digit ID from General League Settings. Sleeper connects to the full dynasty owner workspace.
MyFantasyLeague
Use the league URL or its five-digit ID. Choose the correct season for leagues with custom scoring, contracts, or IDP.
Fleaflicker
Use a public league URL or the numeric ID after /nfl/leagues/ to compare rosters on one dynasty board.
Fantrax and ESPN Fantasy
Use a Fantrax league URL or 16-character ID. ESPN leagues must be publicly viewable; ESPN support is a public beta.