DFS Optimizer

Build winning DFS lineups — in seconds, not spreadsheets

THE SOLVER Optimizer turns your projections into entry-ready lineups for DraftKings, FanDuel, and more — generate one lineup or up to 1,000, with the exact stacks, correlations, and exposures you want.

Built by the team behind THE SOLVER — fantasy players and software engineers obsessed with making DFS faster and easier. Works across 10+ sports and 6 DFS sites.

View Optimizer PricingSee how it works
THE SOLVER DFS Optimizer building optimized NFL lineups with custom rules and projections

What can the Optimizer do?

Three things every serious DFS player needs — in one tool.

Build at scale

Generate one lineup or up to 1,000 in a single click, then save, tag, and export them in seconds.

Your projections, your edge

Start with built-in Default projections (available for most sports), upload your own, or sync a partner’s — and switch between sets instantly.

Rules that enforce your strategy

Quick Rules for one-click stacks and correlations, or advanced rules for exposure, boosts/docks, and precise stacking.

From projections to entry-ready lineups

1

Load your players

Start with our built-in Default projections (available for most sports), upload your own CSV, or sync a partner’s projections — for NFL, NBA, MLB, NHL, Golf, and 10+ sports across dozens of leagues.

2

Set your rules

Use Quick Rules for one-click stacks and correlations, or build advanced rules for player exposure, boosts/docks, and precise stack requirements.

3

Generate & export

Build one lineup or up to 1,000 in seconds, then export straight to DraftKings, FanDuel, Yahoo, and other sites — and late-swap them when news breaks.

The Optimizer handles the math and the busywork, so you can spend your time on strategy — not spreadsheets.

Total control

Advanced rules for any scenario

Express exactly the strategy you have in your head.

  • ✓Force players from the late games for late-swap flexibility
  • ✓Boost or dock players in the scenarios you choose
  • ✓Differentiate your lineups with low-owned players
  • ✓Be precise with your stack and correlation requirements

From $24.99/mo

View Optimizer Pricing
THE SOLVER Optimizer advanced rules for stacking, correlations, and player exposure
When news breaks

Simple late swap

Rebuild your lineups the moment inactives drop.

  • ✓Rebuild all your lineups at once as news comes out
  • ✓View old and new lineups side-by-side before you commit
  • ✓Export updated entries and re-upload them to your DFS site
  • ✓Single-lineup late swap shows multiple swap options with each one’s ownership, projection, and ceiling

From $24.99/mo

View Optimizer Pricing
THE SOLVER Optimizer late swap tool showing old and new lineups side by side

Where it works

NFLNBAMLBNHLGolf+ moreDraftKingsFanDuelYahooDraftStars

10+ sports across dozens of leagues, on 6 DFS sites (DraftKings, FanDuel, Yahoo, SuperDraft, OwnersBox, DraftStars). Default projections included for most sports; upload your own or sync a partner anytime. Late Swap on most sports.

Optimizer + Simulator

The Optimizer builds lineups; the Simulator evaluates how they’ll perform in a specific contest. Many users build a pool here, then sim it to pick their entries.

Compare the two →

Don’t take our word for it

SOLVER subscribers are winning real money on DraftKings and FanDuel — and posting the tickets.

THE SOLVER subscriber sharing a million-dollar DFS tournament win
THE SOLVER subscriber sharing a DraftKings tournament win
THE SOLVER subscriber sharing a FanDuel tournament win
THE SOLVER subscriber sharing a DFS tournament win built with the Optimizer
THE SOLVER subscriber sharing a DFS tournament cash
THE SOLVER subscriber sharing a DraftKings tournament win
See more →

Simple pricing

Single Sport

From $24.99/mo

Pick one sport and pay only for what you play.

All Sports — 6 Months

$54.99/mo

Every sport we support. Save 30% vs monthly.

All Sports — Monthly

$74.99/mo

Every sport, billed month to month.

Pay per sport, or get everything with the All Sports bundle. Annual options available.

View full pricing
Not sure which product you need? Take the 2-question finder →

Common questions

We support DraftKings, FanDuel, SuperDraft, Yahoo, OwnersBox and Draftstars
Read the full FAQ →
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