How do I simulate a baseball pitch?

Open this page and use the live Elo Rating tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.

Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.

Can I use my own numbers?

Absolutely — every input is adjustable, and with data import you can drive a baseball pitch from your own measurements.

Use case · powered by Elo Rating

Elo Rating for a baseball pitch

Simulate a baseball pitch live in your browser. This runs the real Elo Rating solver — adjust the inputs, watch it respond instantly, and export the result. No install, no account.

For:Students Researchers Educators Engineers Hobbyists & Makers K-12 Students First Responders

Elo Rating SystemLive

who should win?

Player A

1600

64%

Player B

1500

36%

Controls

Presets

Player A rating

Player B rating

K-factor

The Elo system, born in chess and now everywhere from tennis to video games, turns a rating gap into a win probability. Every 400 points means a tenfold odds advantage. After each game, ratings shift by the K-factor times the surprise — beating a much stronger opponent gains far more than beating a weaker one, and an upset costs the favorite dearly.

▶ Run in Python

Data Inspector

A win probability64.0%

B win probability36.0%

A rating if win+12

A rating if loss-20

Governing equation

E_{A} = \frac{1}{1 + 1 0 ^{(1500 - 1600) /400}} = 0.640, R_{A}^{'} = R_{A} + 32 (S - E_{A})

Reading this result: A is rated +100 vs B, a 64% win chance — every 400-point gap multiplies the odds tenfold. With K=32, a win nudges A by 12 but a loss costs -20, so beating a stronger foe pays far more than beating a weaker one.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

or unlock everything with Pro →

About this simulation

The full Elo Rating tool models a baseball pitch with the same numerics engineers and scientists use — running entirely client-side. Change any parameter and the result updates in real time, so you can build intuition, check a design, or teach the concept without spreadsheets or installs.

More you can do with Elo Rating

Elo Rating for a basketball free throw Elo Rating for a soccer penalty Elo Rating for a golf putt Elo Rating for a tennis serve Elo Rating for a football field goal Elo Rating for a sprint race Elo Rating for a marathon pace Elo Rating for a cycling time trial

Other ways to simulate a baseball pitch

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Frequently asked questions

How do I simulate a baseball pitch?: Open this page and use the live Elo Rating tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.
Is it free?: Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.
Can I use my own numbers?: Absolutely — every input is adjustable, and with data import you can drive a baseball pitch from your own measurements.