Right now, Sleeper does not support automatically uploading league rosters. This is a feature we hope to add in the future, but there are still a few ways to move your league over successfully.

The best and recommended method is to use your league’s draftboard and manually assign players to the correct teams.

You can review these guides for more detailed walkthroughs:

Below, I'll explain how to enter rosters onto the draftboard.

Start by selecting Preview Your Draft Lobby. Even though you are not running a real draft, you will use the draftboard to recreate your league’s rosters.

Do not begin the draft yet.

Each column represents a different team, so make sure you keep track of which roster belongs to each manager.

To assign players, click on a draft slot and select Set Player. Continue this until all players have been added to their correct teams.

Once completed, your draftboard should look similar to the examples below.

After all players are entered, click the settings icon in the top right and select Begin Draft.

The draft will automatically skip all completed picks, immediately finish, and assign the players to their teams.

Once the rosters are set up, you can invite the rest of your league.

Use the invite link on your league homepage or send invites through the mobile app by searching their Sleeper usernames.

Your custom invite URL can also be found in league settings.

You can share the link however you’d like, including through text, email, or social media.

If you need more help, you can read more here:

If you need any help or want more specifics, you can read more on how to invite friends into your league.

Once everyone joins the league, the final step is assigning managers to the correct rosters.

Go to League Settings > Member Settings.

You’ll see each team listed with an option to assign a user.

Select the correct manager for each roster.

Once all teams are assigned, your league setup is complete.