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📰 Dev.to · YMori

12 articles · Updated every 3 hours · View all reads

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I Calculated NPB Park Factors for 10 Years — Stadium Renovations Revealed
Dev.to · YMori 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 6mo ago
I Calculated NPB Park Factors for 10 Years — Stadium Renovations Revealed
Analyzing 8,619 NPB games (2016–2025) to compute park factors for all 12 stadiums, with special focus on how renovation projects (HR terraces, new stadiums) dra
Park Factors, OAA, and Stuff+ in One Line of Python (savant-extras v0.3.2–v0.4.1)
Dev.to · YMori 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 6mo ago
Park Factors, OAA, and Stuff+ in One Line of Python (savant-extras v0.3.2–v0.4.1)
savant-extras v0.4.2: removed OAA/Outfield Jump/Stuff+ (already in pybaseball). Park factors remain as the unique addition.
Does Exit Velocity Come from the Front Foot? Exploring Driveline Motion Capture Data
Dev.to · YMori 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 6mo ago
Does Exit Velocity Come from the Front Foot? Exploring Driveline Motion Capture Data
I analyzed 40 hitters using Driveline OpenBiomechanics C3D data and found that front leg mechanics — not bat speed — may be the key differentiator in exit veloc
Last Place to Champions: What Marcel Projection Reveals About 2021 NPB Yakult and Orix
Dev.to · YMori 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 6mo ago
Last Place to Champions: What Marcel Projection Reveals About 2021 NPB Yakult and Orix
In 2021, both pennant winners came from last place the year before. Using Marcel team projections with roster-verified data, I analyzed why — and found a league
Why Two Pitchers with the Same Arm Speed Differ by 10 mph — A Motion Capture Analysis
Dev.to · YMori 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 6mo ago
Why Two Pitchers with the Same Arm Speed Differ by 10 mph — A Motion Capture Analysis
I analyzed 61 pro pitchers using Driveline OpenBiomechanics C3D data and found 5 body mechanics factors that explain a 10+ mph gap in pitch speed among pitchers
Draw Baseball Fields and Spray Charts in matplotlib: baseball-field-viz
Dev.to · YMori 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 6mo ago
Draw Baseball Fields and Spray Charts in matplotlib: baseball-field-viz
baseball-field-viz is a Python library for Statcast spray charts in matplotlib — enabling heatmap overlays that pybaseball's built-in spraychart() doesn't suppo
Yu Darvish's Pitching Evolution (2021-2025): A Statcast Data Analysis
Dev.to · YMori 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 7mo ago
Yu Darvish's Pitching Evolution (2021-2025): A Statcast Data Analysis
Analyzing Yu Darvish's pitch mix, velocity, and whiff rate changes over 5 seasons with Statcast data
MLB Statcast + Bat Tracking Dataset (2024-2025)
Dev.to · YMori 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 7mo ago
MLB Statcast + Bat Tracking Dataset (2024-2025)
Comprehensive MLB Statcast dataset with Bat Tracking metrics for 2024-2025 seasons. 1.4M pitches, 118 columns including bat_speed, swing_length, and swing mecha