Baseball analytics, one question at a time

Each clip answers a single question in under a minute, filmed on live data rather than a mock-up. No sound — captions only, so they work anywhere. Free, no account needed.

Which bullpen is running on fumes tonight? · 37 s

Two bullpens in the same game, read side by side: one with its top arm unavailable and nothing behind him, one with eleven rested arms. Captions only, no sound.

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Why SIERA instead of ERA? · 37 s

What a pitcher's ERA counts that has nothing to do with him — defence, sequencing, luck — and why SIERA, built from strikeouts, walks and contact, settles far faster.

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The rest of what is open

Tonight's bullpen report
Every team on tonight's slate, rested and overworked arms, updated all day.
Data coverage
What is tracked, how often it refreshes, and where each number comes from.
Glossary
wRC+, xFIP, SIERA, K-BB% — in plain language, one page.