SlateBreaker — DFS Lineup Optimizer

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today's slate — vegas lines + matchups

fetch data to see game cards

platform

⬆ UPLOAD FD TEMPLATE

Upload entry template or players list before exporting

contest selector

mode

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Cash

50/50 · Double-Up

safefloor

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Tournament

GPP · Large field

stacksceiling

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Showdown

Single game · CPT

captainflex

PROJECTION MODEL

SLATEBREAKER ✓ ACTIVE

Salary + lineup-order model, validated against actual outcomes.

Controls how ownership-heavy the simulated field is

exposure control

TARGET LINEUPS

how many to build

MAX EXPOSURE 100%

0% 100%

Any player in at most 150 of 150 lineups

        Uniqueness: auto
      

data sources

Vegas linespending

Projectionspending

Ownershippending

MLB schedulepending

Season statspending

Batting orderpending

Park factorsbuilt-in

proj pts

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salary used / $35,000

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lineups

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coverage

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Run the optimizer to generate your lineup

Run the optimizer to see player frequency analysis

Load data to see full projection breakdown

SlateBreaker Optimizer Guide

Contest Modes

CASH

50/50s and double-ups. Optimizes for floor — safe, consistent projections. No stacking. No ownership penalty. Win by finishing in the top half.

TOURNAMENT (GPP)

Large-field GPPs. Optimizes for ceiling — stacking enabled, ownership penalty active. Differentiated lineups designed to win, not just cash.

SHOWDOWN

Single-game slates. One MVP (1.5× salary + points) and five FLEX spots. Max correlation — stack teammates, prioritize high-ceiling players.

The SLATEBREAKER Model

SLATEBREAKER

Our signature projection model powers every lineup — there’s nothing to configure. Instead of guessing how to weight data sources, we logged thousands of real player outcomes and built the model that measurably out-predicts the market’s own pricing: a 0.219 correlation to actual results versus 0.202 for the closing salary. It’s validated against real outcomes, not tuned by feel — and it runs automatically on every slate.

Field Models

Controls how ownership-heavy the simulated field is — affects win rate rankings across your lineup set.

CONTRARIAN

Simulates a chalk-heavy field. Rewards low-ownership, differentiated lineups. Best for large-field GPPs where fading the chalk is the path to a top finish.

BALANCED

Default setting. Simulates a realistic mix of chalk and contrarian plays. Good for most slates and contest types.

CHALK

Simulates a contrarian field. Rewards high-ownership plays. Best for smaller fields where the chalk is underowned relative to the field.

Recommended Workflow

Fetch data close to lock time

Lineup confirmations and Vegas lines are most accurate close to lock. Early lineups are built on incomplete data.

Check the Picks tab first

Review the top plays by position, the Stack of the Slate, and contrarian plays before running the optimizer. This gives you a feel for the slate.

Select your contest mode

Cash for 50/50s and double-ups. GPP for tournaments. Showdown for single-game slates.

Review the projections

The SLATEBREAKER model projects every hitter from salary and lineup order, validated against actual outcomes. Scan the Projections tab to see the values driving your lineups.

Set field model to Contrarian for large GPPs

In a 100k-person field, the chalk loses. Contrarian field model rewards differentiation.

Lock your anchors

In the Projections tab, click the lock icon on players you want in every lineup. Useful for stacking a high-implied team.

Run and review

Run the optimizer. Check lineup coverage — 80%+ is good. Review the Analysis tab to check exposure across your lineup set.

Export and enter

Export to CSV. Upload directly to FanDuel or DraftKings entry manager.

Sharp Notes

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Lineup position matters. A lower-salary player in a premium spot outscores a higher-salary player buried deep.

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Stack the team with the highest implied runs, not just the highest O/U. Both teams can score in a high-total game.

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Ownership below 8% is where GPP edge lives. The optimizer's contrarian plays are filtered to this range.

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The Showdown MVP multiplier means a 20-point game becomes 30. Pick a high-ceiling player, not just the highest projection.

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Coverage above 80% means your lineup set is well-diversified. Below 50% usually means the pool is too small or exposure limits are too tight.

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Refresh data 5–10 minutes before lock. Batting orders post late — a confirmed leadoff hitter is a dramatically different play than an unconfirmed one.

SlateBreaker Picks — Auto-generated from projection model

Run the optimizer or fetch data to generate picks.