Baseball

Pitch quality, player development, and the minor leagues, built on public Statcast data.

Tools

Tool

Stuff+ leaderboard

2026 MLB and Triple-A pitch grades, filterable by team, level, and pitch type, with stuff vs. results.

Tool

Triple-A explorer

All 30 clubs: percentiles, swing decisions, pitching profiles, and what changed late in the season.

Analysis

Midseason pitch changes mostly stick. Lost fastball velocity mostly doesn’t.

pitching

player development

When a pitch’s velocity or movement changes during the season, how much is still there the next spring? Movement changes hold; fastball velocity losses mostly come back.

Nov 10, 2026

Stuff predicts next season better than results do

pitching

models

A pitch-quality model built only on velocity, movement, and release predicts a pitcher’s next season better than his run value does, and it works on Triple-A pitchers too.

Nov 10, 2026

Two weeks of swing decisions tells you something. Two weeks of results doesn’t.

player development

hitting

pitching

Triple-A

Which short-window Triple-A numbers carry over to the next two weeks, and what that means for building a player development report coaches can trust.

Nov 10, 2026

Data: pitch-level Statcast from Baseball Savant (MLB 2024–2026, Triple-A 2025–2026) and player information from the MLB Stats API. Sparvi publishes aggregates only.