Lineup Science — DFS analytics by Good Labs. The Formula, classic lineup optimizer. The Nucleus, showdown optimizer. The Reactor, contest and ROI simulator.

Analyze · Optimize · Simulate · Profit

Same game.
A smarter approach.

Three tools from one lab. Build lineups with The Formula or The Nucleus, then put them under pressure in The Reactor before lock. Everything runs in your browser — your files never leave your device.

TheFormula

Classic Lineup Optimizer

Build the optimal combination.

  • Exact MILP solver — true optimal lineups under DraftKings Classic rules
  • Stacks, bring-backs, team & game limits, ownership and leverage rules
  • Exports a DK upload file plus a detailed CSV that drops straight into The Reactor
Open The Formula

TheNucleus

Showdown Optimizer

Everything revolves around your captain.

  • Searches every possible captain for the best five flex under the cap
  • Captain, construction and uniqueness rules built from top-1% lineups
  • 150 Showdown lineups in well under a second
Open The Nucleus

TheReactor

Contest & ROI Simulator

Put your lineups under pressure.

  • Plays your lineups against a realistic, ownership-matched field
  • Sim ROI, cash rate, top-1% rate and full finish distribution
  • Test build shapes before you commit — single stack vs. double stack
Open The Reactor
01

Build

Load your DraftKings salaries and projections into The Formula for Classic slates or The Nucleus for Showdown.

02

Test

Drop the exported lineups into The Reactor and see how they hold up against a realistic field.

03

Enter

Keep the builds that earn their spot and upload the DK file straight to DraftKings.