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Terms of service
Research, not advice
No Curveball is for looking at pitcher and hitter behavior. Charts can be late, incomplete, or wrong. Live games may lag. Use the site at your own risk. Nothing here is professional, financial, or legal advice.
No gambling use
Do not treat alignment copy, matchup plots, or change flags as picks, props, or an edge to wager. The product is research. It is not a betting tool.
Baseball marks and data
Major League Baseball names, marks, and statistics belong to MLB and its clubs. No Curveball is an independent project and is not affiliated with, endorsed by, or sponsored by MLB. Measurements shown here come from public Statcast and the MLB Stats API.
What you may do
Browse, share links, and use the research for personal or editorial work with credit. Do not scrape the site into a commercial product, wrap it as your own service, or overload the servers.
Changes
These terms can change as the site changes. The current page is the version that applies. Also read the privacy policy.