Ownership-aware lineups and contest sims for DraftKings NFL GPPs.

Bring your own projections. Research the slate, build up to 20 lineups with ownership in mind, and compare them against a simulated field before lock. No subscription.

NFL Classic · single-entry, 3-max, and 20-max · fields up to 12,000 entries

Request an inviteOr try the free research tools
Free projections courtesy of TwoGun, five-time DraftKings million-dollar winner. Get them at TwoGunGPT (opens in a new tab)

From your projections to a simulated contest

A walkthrough of the actual Lab interface on a fictional slate: upload, compare, then simulate.

  1. 1. Bring your projections

    Preview your CSV, check player matches, then save a private snapshot. This example resolves all 24 fictional players and includes ownership.

    Projection upload preview: Synthetic example CSV, 24 of 24 salaried players resolved, ownership supplied, and Confirm snapshot action.

  2. 2. Compare players within a position

    The Leverage Board puts value, projection, ceiling, projected ownership, and salary side by side, one position at a time, using your projections. This view shows the example’s eight wide receivers.

    Leverage Board, WR view: eight fictional wide receivers sorted by value, with projection, ceiling, projected ownership, salary, and an outcome-range curve for each.

  3. 3. Test lineups against a simulated field

    Sim Lab plays the lineups you built against a modeled field of opponent lineups for the contest you plan to enter. Here it is set to test the one lineup built from the example inputs in a single-entry contest.

    Sim Lab contest setup: the synthetic example slate, build #101 with one lineup, single entry, a 9,000-entry field, top-heavy payout, and Run simulation.

Example uses fictional players, projections, ownership, and salaries; the board values and the tested lineup were computed by the shipped code. Methods and limitations

Free research now, tools by invite

No subscription. The invite tools use your own projections, and your uploads stay private to your workspace.Inputs and privacy

Free now

With an invite

  • Leverage BoardValue, ceiling, and ownership within each position
  • Stacks and FLEXQB stacks by modeled popularity, and who fits the FLEX
  • OptimizerBuild up to 20 lineups and export a DraftKings CSV
  • Late SwapUpdate unlocked slots in lineups you entered
  • Sim LabCompare your lineups against a simulated field
  • ResultsReview a finished contest privately

Free projections from our partner TwoGunGPT

  1. Create a free account at TwoGunGPT (opens in a new tab) (Google or an email link).
  2. Download the DraftKings Main slate CSV. GPP Lab is NFL Classic only, so skip the Showdown files.
  3. Upload it on Slate and choose an ownership column when asked. Your projections stay private to your workspace.

He updates Thursday and again Sunday morning before the early games, so download and upload again on Sunday. His page says his ownership misses most on the biggest chalk and on late news.

TwoGun, five-time DraftKings million-dollar winner. @TwoGunFF on X (opens in a new tab) Neither site pays the other.

Get free projections at TwoGunGPT (opens in a new tab)Already have projections? Upload them

Request an invite

We use your email only to reply about your invite and delete it after we reply, or within 90 days. Requests are reviewed by hand, with a reply within 48 hours.

Prefer email? Write to info@thegpplab.com. Already have a code? Redeem your invite