A real lineup optimizer for DraftKings & FanDuel, NFL & NBA, cash games & tournaments. Greedy value fill plus hill-climbing swaps — every lineup hard-validated for cap, positions, stacks and exposure.
Chat with Grid to build lineups conversationally — "build me 3 GPP lineups with a Chiefs stack" — powered by a free LLM and this same optimizer. No account needed.
1 · Build your player pool
Add manually
2 · Optimize
How it works. Cash lineups maximize projection minus a volatility penalty (high floors win). GPP lineups maximize ceiling with NFL QB + 2 same-team pass-catcher stacks. Then hill-climbing swaps improve every lineup until no single swap helps. 🔒 Locks appear in every lineup (and ignore the exposure cap); 🚫 exclusions appear in none. The exposure summary under your results shows each player's share of lineups, so you can spot when you're overweight on a play. No AI, no magic — just math you can audit.
Your pool
0 players
🔒 = locked into every lineup · 🚫 = excluded from all lineups · ✕ = remove player
Results
Optimized lineups
Run the optimizer to see lineups here.
Play it straight. Projections are yours — the optimizer only arranges them. Garbage projections in, garbage lineups out. Start from a reputable projection source, adjust for news, and never enter more lineups than your bankroll plan allows. Bankroll rules apply to DFS too.