Coach my roll
See center of gravity in your own rolls
Reading about center of gravity only gets you so far. Upload a roll or a competition match and the professor watches it back with you — it finds where center of gravity is costing you the exchange, marks the moment it slipped, and tells you what to drill next.
Free, no account needed. Your footage stays private.
Connections describe what coaches teach across 2,044 indexed videos — not what's objectively best. A row backed by one video is weak evidence; ✓ marks connections taught by 2+ independent channels.
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1Your game
Where does Center of Gravity show up in your rolls?
Upload a roll or a match and the professor finds every center of gravity moment in your own footage, then coaches you through what went wrong — or just tell it what's going wrong and get pointed at the fix.
Prefer your own assistant? Use the professor in ChatGPT or Claude