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Splash Play's MLB DFS tool is built by Chris Spags for DraftKings and FanDuel players. During the MLB season it carries daily projections for pitchers and hitters on the slate you select, with pitcher matchups, park factors and stacking tools.
MLB research starts with who is actually playing. Check the confirmed batting order before you trust a hitter's projection: a drop from fifth to eighth in the order means fewer trips to the plate. Stacks matter in MLB because a hitter who reaches base can score a run when a teammate drives him in; that teammate receives the RBI. The Portfolio Builder lets you set a mix of five-man, four-man and scattered lineups; FanDuel allows at most four hitters from one team.
Which membership has what: Squirt Squad covers matchup screens and projection matrices. Squirt Squad VIP adds SPAGS projections, exports and simulation results. Apex adds lineup browsing and the Portfolio Builder. Compare memberships.
When a player is scratched after you have entered, Late Swap replaces inactive players in your DraftKings lineups, leaves players whose games have locked in place, and gives you a CSV to upload to DraftKings yourself. The field guide walks through entries files, building, exporting and Late Swap. Simulation results are model outputs, not a promise of winnings.