Keeper leagues (also known as Dynasty leagues) allow Team Managers to keep players on their roster over multiple seasons without having to redraft them.  Keepers are only available in League Manager leagues.  Team Managers may select as few players or as many players as the league creator selected during league creation. For example, if your league allows 3 Keepers per team, a Team Manager may elect to designate between 0-3 players to stay on their roster for the next season.
League Manager can enable or disable Keeper settings via LM Tools. 

A few important facts about Keepers on ESPN Fantasy: 

• The default draft method in Keeper leagues is to draft/assign selected Keepers in the first rounds. 
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    • Keeper rounds are Non-Snake. (For Snake Drafts)
      This means that if the league allows 2 keepers in the upcoming draft, the first 2 rounds would be non-snake. 1-10, 1-10, then from the 3rd round, 1-10, 10-1, 1-10, etc.
• The LM can also select to have Keepers drafted/assigned in the same round as they were originally drafted. This method rewards Team Managers who draft players in later rounds who go on to become superstars.
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    • Example: Last season, a Team Manager drafted a player in the 5th round.  The Team Manager decides to mark that player as one of their team's Keepers for the next season.  When the next season's draft occurs, that Keeper will be drafted automatically in the 5th round.
       
• In Free Agent Budget leagues, Keeper salaries (values) for salary cap drafts can be adjusted BEFORE they lock. 
• The Keeper Lock date can be changed at any time BEFORE the draft room opens 1 hour prior to the draft.
• League Manager can select keepers on behalf of another team. 
• Managers may keep as few or as many players as the maximum limit set by LM. 

To enable Keepers in an LM league:

1. Open LM Tools
2. Go to League and Scoring Settings Tools
3. Select League Settings
4. Select Transactions and Keepers
5. Scroll down to Keepers Rules and click on Edit
6. Click on Yes for Use Keepers for (next) Season.
7. You can now select how many players can be designated as a Keeper (Minimum 1, maximum full roster size)
8. You can set the date when Keepers Lock. The default is one hour before your next season Draft Date/Time.
9. Click Save Changes 

Keeper Salaries

Keeper salaries are how much a manager will "pay for" out of their salary cap prior to the draft in order to keep that player. Kind of how draft right works. 
Most leagues use the player salaries from the prior season(s), but LM's can change that.

To Edit Keeper Salaries

1. Open LM Tools
2. Go to League and Scoring Settings Tools
3. Select League Settings
4. Select Transactions and Keepers
5. Scroll down to Keepers Rules and click on Edit
6. Click on Edit Keeper Salaries.
7. You can now select the salary.
8. Click Save Changes 

Change Keeper Lock Date

NOTE: Once the keeper lock date passes, only the league manager will be able to modify a team’s keeper selection. 
Alternatively, choose “Lock One Hour before Draft” to allow league members to edit their keepers in the last minute. 

1. Open LM Tools
2. Go to League and Scoring Settings Tools
3. Select League Settings
4. Select Transactions and Keepers
5. Scroll down to Keepers Rules and click on Edit
6. You can set the date when Keepers Lock. The default is one hour before your next season Draft Date/Time.
7. Click Save Changes