▸ DFS LINEUP OPTIMIZER

The fastest DFS lineup optimizer for DraftKings.

Build 250 MLB, NBA, NHL, NFL, or PGA lineups in under 2 minutes. MILP solver + 10,000-simulation field-aware Monte Carlo. Ownership-aware projections, every stack pattern, DK-validated bulk CSV export. Start free.

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⚾ MLB 🏀 NBA 🏒 NHL 🏈 NFL ⛳ PGA
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MILP solver

Mixed-Integer Linear Programming engine builds the highest-projected lineup subject to salary cap, position rules, ownership limits, and exposure constraints in under 0.4 seconds per lineup.

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10,000-sim Monte Carlo

Every lineup is scored against 10,000 simulated contest fields with real ownership distributions. See ceiling, floor, cash %, top-1% probability — not just projection.

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DK-validated CSV export

Bulk export 250 lineups in the exact DraftKings format with player name (DK ID) ordering. Drag-and-drop directly into the DK lineup upload page. No formatting errors.

Every feature competitors charge $50+ for, included.

Stacks
Every pattern. MLB 5-stack, 5+2 bring-back, 5+3, 4+3, mini-stack, no-stack. NBA line stacks + game stacks. NFL stack patterns with bring-back logic. Multi-select to build a portfolio across patterns in one run.
Ownership
Real, not guessed. Field-aware projections trained on historical DK contest data. The sim uses ownership distributions — not point estimates — so leverage scores are honest, not vibes-based.
Variance
Dial it in. Slider lets you target cash-game safety (low variance, high floor) or GPP upside (high ceiling, more unique). Defaults calibrated to each sport's contest structure.
Late swap
Re-optimize after lock. When a player is scratched 30 minutes before lock, one-click re-optimize keeps your locked players + builds new lineups around them. No starting over.
Exposure
Per-player min/max %. Force a high-confidence player into 60% of your lineups. Cap a popular trap at 15%. Lock players in. Exclude players entirely. Full control across 250 lineups.
Player Profile Radar
See every player at a glance. 6-axis radar (Ceiling · Floor · Projection · Value · Recent Form · Ownership) ranks each player vs the entire slate pool. Click any player to expand.
Park + weather (MLB)
Park Intelligence overlay. Every MLB projection is park-adjusted with wind, temperature, humidity, and ballpark geometry. Yankee Stadium short porch boost, Coors Field altitude, retractable-roof status — all in.
Sim accuracy
Calibrated against 137 real DK contests. The field-aware sim is back-tested against actual DraftKings GPP results so cash/top-1% percentages match reality — not inflated marketing math.

FAQ

What is a DFS lineup optimizer?

A DFS lineup optimizer is a tool that uses mathematical optimization (typically Mixed Integer Linear Programming) to build the highest-projected DraftKings lineup subject to constraints like salary cap, position requirements, ownership limits, and stack patterns. Signal Labs adds a 10,000-simulation field-aware Monte Carlo on top so you see ceiling, floor, and cash-game probability for every lineup.

Is the DFS optimizer free?

Signal Labs offers a free tier with limited daily lineups. The full version — 250 lineups per slate, all sports, every stack pattern, late-swap re-optimize, DK bulk CSV export — is included with the $30/month Premium subscription. New subscribers get a 3-day free trial.

Which sports does the Signal Labs optimizer cover?

MLB (main slate, showdown), NBA (main, showdown), NHL, NFL (main, showdown), and PGA. Each sport has dedicated solver constraints, stack patterns, and field-aware sim calibration. CFB rolls out for the 2026 season.

Does the optimizer export to DraftKings directly?

Yes. Signal Labs exports a DraftKings-validated CSV for single lineups or bulk uploads. The export uses player names with DK IDs in the required format and respects DK's position ordering, so you can drag-and-drop into the DraftKings lineup upload page.

What stack patterns are supported?

MLB: 5-stack, 4-stack, 5+2 bring-back, 5+3, 4+3, mini-stack, no-stack. NBA/NHL/NFL: line stacks, game stacks, bring-backs. Multi-select stack patterns let you build a portfolio across multiple structures in one optimization run.

How is ownership data sourced?

Signal Labs uses a blend of historical DraftKings contest data and our own daily field-aware projections. The 10,000-simulation Monte Carlo uses these ownership distributions to compute realistic cash, top-1%, and top-0.1% percentages for each lineup.

Can I upload my own projections?

Custom CSV/Excel projection upload is on the roadmap and rolls out post-launch. Today the optimizer uses Signal Labs' daily projection blend (proprietary model + market-aware adjustments + park/weather overlays for MLB).

Start building lineups in under 60 seconds.

3-day free trial. $30/month. Cancel anytime in your dashboard.

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