MLB DFS Lineup Optimizer

MLB lineup optimizer for DraftKings and FanDuel

This MLB DFS optimizer builds optimal MLB lineups for today's slate with stacking rules, exposure caps and daily projections. It runs branch and bound rather than a greedy fill, so the lineup it returns is provably the highest-projected one available under your constraints. Ask for multiple lineups and the MLB lineup generator re-solves for each with a diversity penalty, so you get genuinely different rosters instead of the same core with one player swapped. It is a free MLB optimizer that works as both a FanDuel MLB optimizer and a DraftKings MLB lineup optimizer, and the same daily fantasy baseball optimizer handles cash and tournament builds.

Why stacking decides MLB tournaments

Baseball scoring is bunched rather than spread. Runs arrive in innings, and a six-run inning pays every hitter who batted in it. That correlation is the entire reason stacking works, and it is stronger in baseball than in any other DFS sport.

A 4-2 stack means four hitters from one team and two from another, which is the standard tournament shape on a full slate. Consecutive batting order slots are better than scattered ones, because hitters batting back to back are far more likely to appear in the same rally.

Stacking applies in cash lineups too, just at lower concentration. The idea that stacks are only for tournaments costs cash players more than they realise, since a three-hitter stack still raises correlation without taking on tournament-level risk.

Pitchers, salary and exposure

Pitchers are the largest single salary commitment on an MLB roster and the position where projections are most reliable, since strikeouts depend less on teammates than hitting does. That combination makes pitcher the place to spend and the offence the place to find value.

Across a large set, cap exposure on your favourite bat. At 150 lineups an uncapped value hitter appears in nearly all of them, which means one bad matchup takes your whole set down with it.

Frequently asked questions