



KSplit | Strikeout Analytics
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@KSplitAnalytics
MLB strikeout distributions | Lineup-specific, split-driven modeling | Measuring strikeout risk, stability, and upside | Full Access below










Split Influence Cheat Sheet 4/15/26 Lineups are projected. Labels update when confirmed lineups lock @ KSplitAnalytics.com This is one of the inputs that feeds each pitcher's full K distribution. When a meaningful difference exists between a pitcher's K% vs LHB and K% vs RHB, the actual handedness composition of the opposing lineup shifts the projection. More hitters on the advantaged side pushes the distribution right (Boost). More on the disadvantaged side compresses it (Damp). Today's (projected) slate leans damp-heavy. 21 of 28 pitchers carry an active split influence, and 16 of those are on the damp side. Only three pitchers (May, Kochanowicz, Gil) carry a full Boost. Quintana is the lone Max Damp, facing a Houston lineup stacked against his weaker split.


Split Influence Cheat Sheet 4/14/2025 All lineups are projected. Confirmed lineups update live on the dashboard at KSplitAnalytics.com Every pitcher strikes out lefties and righties at different rates. When that gap is meaningful, the composition of the lineup they're facing shifts the entire K distribution. Today, Cole Ragans (L) has 6+ hitters projected on his advantaged side (RHH) against Detroit. The distribution shifts toward more strikeouts. Mitch Keller faces the opposite problem against Washington, with 6+ hitters stacked on his disadvantaged side. His distribution compresses. Split Influence is one of several inputs that shape the full strikeout probability curve before the model prices an Over or Under. It's not a bet signal on its own. It's a structural modifier built into every projection on the board.




4/13 KSplit recap: 11-9 on the slate, +0.24u. Overs went 8-8, -1.35u. Volume was heavy with 16 Over plays but the juice worked against the margin. Filtering to 3% or greater best edge tightened it to 6-5, +0.43u. Kirby, Nelson, Kremer, Sanchez, Eovaldi, and Peterson all cleared. The losses came from high-edge plays where the model built aggressive tail distributions that never showed up. Unders went 3-1, +1.59u and carried the day. Kikuchi held NYY to 4 on a 5.5 line. ATL held Eury to 2 on a 5.5. Crochet's line was 7.5 and he recorded zero strikeouts and was probably tipping pitches? Insane game there. The only Under loss was Severino, who gave up 7 against a projection of 4; albeit being the highest edge of all the unders. Huge slate today with a lot of marquee names




Split Influence Cheat Sheet 4/14/2025 All lineups are projected. Confirmed lineups update live on the dashboard at KSplitAnalytics.com Every pitcher strikes out lefties and righties at different rates. When that gap is meaningful, the composition of the lineup they're facing shifts the entire K distribution. Today, Cole Ragans (L) has 6+ hitters projected on his advantaged side (RHH) against Detroit. The distribution shifts toward more strikeouts. Mitch Keller faces the opposite problem against Washington, with 6+ hitters stacked on his disadvantaged side. His distribution compresses. Split Influence is one of several inputs that shape the full strikeout probability curve before the model prices an Over or Under. It's not a bet signal on its own. It's a structural modifier built into every projection on the board.




Split Influence Board | 4/13/26 (projected lineups) Isolated how lineup handedness is shifting each pitcher’s strikeout distribution before first pitch. Pitchers not listed have a "neutral" split influence Boosts and damps aren’t "one size fits all". Skenes is a reverse split arm, Warren is traditional. Splits do not get weighted more or less based off if it is a traditional or reverse split, but reverse K splits goes against traditional thinking and is worth noting. Kirby, Skenes, Warren all getting a boost from matchup composition Cavalli, Crochet in slight boost environments Burrows, Nelson, Holmes dealing with dampened conditions This will be posted daily moving forward. Not the end all be all; but another layer into how the distribution actually forms.

KSplit | 4/5–4/12 recap Betting to win 1u on negative odds, wagering 1u on positive odds Unders: 30-19, +9.70u, +19.8% ROI ✅ Overs: 56-65, -16.67u, -13.8% ROI ❌ Filter to unders with 4% or greater model edge: 21-8. +12.71u. +43.8% ROI Couple notable signals include Skubal vs MIN u7.5 Ks @ -137 ✅ Skubal vs MIA u7.5 Ks @ -138 ✅ Peralta vs ATH u6.5 @ -153 ✅ Eury Perez vs MIA u6.5 Ks @ -130✅ Great week for unders as that has held true since the beginning of the season. ksplitanalytics.com




Split Influence Board | 4/13/26 (projected lineups) Isolated how lineup handedness is shifting each pitcher’s strikeout distribution before first pitch. Pitchers not listed have a "neutral" split influence Boosts and damps aren’t "one size fits all". Skenes is a reverse split arm, Warren is traditional. Splits do not get weighted more or less based off if it is a traditional or reverse split, but reverse K splits goes against traditional thinking and is worth noting. Kirby, Skenes, Warren all getting a boost from matchup composition Cavalli, Crochet in slight boost environments Burrows, Nelson, Holmes dealing with dampened conditions This will be posted daily moving forward. Not the end all be all; but another layer into how the distribution actually forms.

Lineups confirmed for both HOU and SEA Mike Burrows - Split influence level shifted to "neutral" from "slight damp" after confirmed lineup - o4.5 Ks @ -148; 1.00% edge - Mean of 5.09 Ks George Kirby - Split influence level remained "boost" after confirmed lineup - o5.5 Ks @ -122; 8.43% edge - Mean of 6.32 Ks KSplitanalytics.com