The sims build it.You call the shots.
A DraftKings optimizer that builds every lineup inside 100,000 correlated simulations, so stacks happen because games erupt. Your locks, fades, and exposure caps still run the build.
24 hours of full NFL access, no subscription. Or every sport for $39/mo.
Played with my own bankroll.
Lineups built with DFS Only and entered on DraftKings. These are screenshots from my account, not a simulation.
Slate to upload in three steps.
Read the slate
Every game broken down: implied totals, play-callers, coverage shells, pace, and a plain-English grade for each position. Target or fade a game with one click.
Build inside the sims
The slate plays out 100,000 times. Each lineup is built for its own simulated game script, with your stack shapes, locks, and exposure caps enforced across the set.
Check it, then export
See every player's exposure next to the field's ownership and your leverage, then download a CSV that DraftKings accepts as-is, Classic or Showdown.
Sim-built. Still your build.
Most sim tools either grade lineups after they're built, or build inside the sims and ask you to stop touching the settings. DFS Only does the sim part and leaves you the controls.
Most sim tools
- Build from rules first, then use sims to rank the result
- Or build in the sims and lock you out of the settings
- One projection number per player
DFS Only
- Every lineup is built inside a simulated slate
- You set stacks, locks, fades, and exposure caps
- Floor, median, ceiling, ownership, and leverage on every player
Built for DraftKings.
QB stack shapes, bring-backs, team caps, and matchup grades for every position. Classic and Showdown.
Minutes-based projections, game stacks instead of team stacks, and Showdown captain builds.
Hitter stacks, pitcher matchups, park and weather adjustments, and team-wide exposure caps.
"Fifteen years grinding DraftKings taught me the pros run thousands of possible futures. So I built a tool that does that and never takes the controls out of your hands. I play it every slate, and if something breaks, you're talking to the person who wrote it."
Try one slate. Then decide.
Both options include everything: projections, sims, leverage, the full optimizer, and CSV export.
Day pass
- One sport, 24 hours from purchase
- Full projections and 100,000 sims
- No subscription
Pro · All sports
Four NFL Sundays on day passes cost $48. Pro covers every NFL, NBA, and MLB slate for $39.
- Every slate, every sport, all month
- Leverage, ownership, and sim win rates
- Stack builder, team allocation, full portfolios
- Cancel anytime
Secure checkout through Stripe.
Questions.
What does "built inside the sims" mean?
We play the slate out 100,000 times with teammates and opponents linked, so when a game goes high-scoring, everyone in it benefits together. Each lineup is built for one of those simulated outcomes, which is why stacks and bring-backs show up when the game script calls for them.
Can I still use my own reads?
Yes. Lock the players you believe in, fade the ones you don't, and set stack shapes and exposure caps. The sims supply the correlation and the optimizer builds around your calls.
What's in a day pass?
Everything for that sport for 24 hours from purchase: projections, sims, leverage, the optimizer, and CSV export. NFL is $12, NBA and MLB are $5. No subscription.
What is leverage?
How often a player shows up in winning simulated lineups, minus how much of the field is projected to roster him. Positive leverage means he wins more often than his ownership suggests.
Does it work with FanDuel?
Not yet. DFS Only is built for DraftKings salaries, roster rules, and scoring, and exports a CSV ready for DraftKings bulk upload. FanDuel is on the roadmap.
Stop building by hand.
Build inside the sims.
One NFL slate for $12, or every sport for $39/mo.