You can run a survivor pool inside your Sleeper league, but not with Sleeper’s own survivor game — because that one is about the NFL, not about your league. The fix is a survivor pool that runs over your league’s own teams, where each week you pick one of your leaguemates’ fantasy teams to win its matchup. This guide covers what that is, why Sleeper’s built-in version doesn’t do it, the ways commissioners currently solve it, and how to set one up without dragging everyone onto a second platform.

What a survivor pool is

A survivor pool — also called a knockout, suicide, or eliminator pool — is a weekly elimination game: each week you make one pick, a wrong pick knocks you out, and the last person standing wins. In the classic NFL version you pick one team to win each week and can’t reuse a team, so the challenge is spending your safe picks before you run out of them. Run inside a fantasy league, the same mechanic points at your own league instead: each week you pick one fantasy team in your league to win its head-to-head matchup, each team is usable only once, and one bad read on a leaguemate’s roster ends your run.

That second version is the one that keeps a fantasy league engaged, because it’s decided by the same weekly results everyone is already watching — a manager checks one scoreboard and learns how their team and their survivor pick both did.

The reason to bother is engagement. In a standard league, half the managers are mathematically out of playoff contention by mid-November and quietly stop setting lineups — which is bad for them and worse for the contenders they were supposed to keep honest. A survivor pool gives every manager a second thing to win that lasts independent of their record, so the manager whose fantasy season died in Week 6 is still sweating a survivor pick in Week 13. It’s the cheapest way to keep a league fully alive from kickoff to the finale.

Why Sleeper’s built-in survivor doesn’t cover this

Here’s the part that trips people up: Sleeper does have a native survivor game. It added NFL Survivor and NFL Pick’em as built-in games around 2024. But those are standalone contests played over the NFL — you pick NFL teams to win each week, exactly like a traditional office pool. They have nothing to do with your fantasy league’s rosters or matchups.

So the thing Sleeper doesn’t host is a survivor pool over your league — one where the “teams” you pick are your leaguemates’ fantasy teams and the results come from your league’s weekly head-to-heads. Sleeper runs the season-long fantasy league, and separately it runs an NFL survivor game, but it doesn’t connect the two. That gap is the entire reason this guide exists, and it’s why commissioners who want a league-native survivor pool have had to look elsewhere.

The three ways commissioners solve this today

Before there was an integrated option, commissioners reached for one of three tools — each of which works, and each of which has a real cost.

RunYourPool is a dedicated pool-hosting site (now part of Splash Sports, alongside OfficeFootballPool) that runs survivor, pick’em, and other pools with automated standings. It’s polished and handles the scoring, but it runs over the NFL, not your fantasy league — so it’s a second, separate contest your members have to join, and it can’t know anything about your league’s rosters or matchups.

OfficeFootballPool, RunYourPool’s sibling under Splash Sports, is the same story: a long-running, capable pool host, but an NFL-based one that lives outside your league. Both are good at what they do; neither closes the gap between the pool and the fantasy season it’s supposed to ride on.

A manual spreadsheet is the third path, and the most common in smaller leagues. It’s free and infinitely flexible — you can run survivor over your league’s own matchups by hand — but the commissioner becomes the scoring engine: tracking every pick, checking it against each week’s results, marking eliminations, and policing whether someone changed a pick after kickoff. It works until the week you make a mistake or forget, and then it’s your credibility on the line.

The pattern across all three: you either accept a survivor pool that isn’t tied to your league, or you tie it to your league by hand.

The fourth way: a survivor pool built into your league

LeagueSide runs a survivor pool over your Sleeper league itself. You link your Sleeper league once, and the survivor pool uses your league’s real teams and weekly matchups — each participant picks one of your league’s fantasy teams to win its matchup that week, and the pool scores and eliminates automatically off the results your league already produces. No second platform, no separate signup for your members, and no spreadsheet for you to babysit. It’s the same league, the same people, and one place.

Because it reads your Sleeper league read-only, it never touches your rosters — it only watches the matchup results and runs the game on top of them. That’s the difference between a survivor pool that sits next to your league and one that’s part of it.

It also means the survivor pool becomes part of your league’s record rather than a disposable side contest on someone else’s site. Because LeagueSide keeps your league’s history across seasons, who won survivor in 2024 lives alongside who won the championship — the kind of running institutional memory that a spreadsheet deletes every January and a third-party pool never had in the first place. And it stacks cleanly with the other side games: the same members can run a Pick’em matrix over the league’s matchups in the same place, so one login covers the whole slate of things to win each week.

Step by step: setting up a survivor pool in LeagueSide

1. Link your Sleeper league (if you haven’t already) — enter your Sleeper username and pick the league; LeagueSide pulls in the teams and weekly matchups.
2. Create the pool. As the commissioner, create a Survivor pool for the season. Give it a name and, if you want, constrain it to a start and end week so it doesn’t have to run the whole season.
3. Set the rules. The pool’s defaults match how most survivor pools run: each team is usable only once across the season, a missed pick eliminates you, and a tie does not eliminate you. You can adjust each of these.
4. Invite your members — they’re already in your league, so they just join the pool; no new account or second app.
5. Picks run weekly. Each week, participants pick one fantasy team in the league to win its matchup. Picks stay hidden until the week locks, so no one can copy the room.
6. Elimination is automatic. Once the week’s results are in, the pool marks who survived and who’s out — you don’t score anything by hand — and the last participant standing is the winner.

The whole point is that steps 5 and 6 happen on their own. The commissioner sets the pool up once and then watches it run, instead of becoming the weekly scorekeeper.

Rules variants worth knowing

Survivor pools come in more than one shape, and it’s worth deciding your variant before the season so it lands in the league constitution rather than getting argued mid-run.

• Strikes (or mulligans): participants can survive one or more wrong picks before elimination, which keeps more people alive longer and softens the sting of an early upset.
• Multi-pick: in later weeks, participants must pick two or more teams, raising the difficulty as the field thins.
• Margin pools: a cousin of survivor where no one is eliminated — instead you pick the team you expect to win by the most, and you accumulate (or lose) the margin of victory.
• Buybacks: a paid second chance to re-enter after a loss, usually at a rising cost each week.

LeagueSide’s pool focuses on the core mechanic and its most-used toggles — use-each-team-once, whether a tie eliminates, and whether a missed pick eliminates. Fancier variants like strikes or buybacks can still be run as house rules on top, decided and tracked by the commissioner; the constitution is where you write down which variant your league uses so there’s a single source of truth.

Payout structure templates

Survivor payouts follow a few common shapes, and — as with any side pot — LeagueSide runs the game but not the money: dues and prizes stay between managers and the commissioner. Pick a structure and write it into the constitution before the season:

• Winner-take-all: the last survivor takes the pot. Simplest, highest variance.
• Split pot: if multiple participants survive deep into December, they split — common because outright sole survivors are rare in smaller pools.
• Tiered: a share to the last survivor plus a smaller share to the runner-up (or the manager who got furthest before elimination), which keeps more people invested late.

Whichever you choose, decide it in September. A survivor pool that knows in advance exactly what surviving is worth is a pool nobody argues about in December.

For the rest of the commissioner’s toolkit — trades, waivers, multiple leagues, and the other side games you can layer on — see the Complete Sleeper Commissioner Playbook.