Should you compare an athlete's numbers to their teammates or to themselves?
Film Room numbers are only as useful as the baseline you read them against, and for most athletes that baseline is their own history, not the kid next to them.
A coach films two athletes doing the same drill, gets two numbers back, and the obvious next move is to hold them up side by side. It is usually the wrong comparison to make first.
Different bodies, different numbers, same fault
Takeoff angle, hip rise, overstride and the rest of what the Film Room reports are read from a skeleton built to that athlete's own proportions. A taller athlete and a shorter one can both be doing something correctly and still produce different numbers, because the geometry of the movement is not identical between two different bodies. Reading one athlete's number against another athlete's number tells you less than it looks like it does.
The comparison that actually holds up
- The same athlete, this month against last month, on the same drill.
- The same athlete's best attempt against their worst attempt in one session, which usually isolates the fault faster than any outside reference.
- A whole team against the general ranges the app quotes, treated as a rough sanity check rather than a ranking.
That is also why the filming setup matters more than it looks. An athlete filmed from a slightly different spot, height or distance each week is not really being compared to their old self so much as to a new camera angle. Keep the spot the same and the athlete's own numbers become an honest baseline.
Where the history actually lives
Every athlete on StatLap gets a public page with their personal bests and full competition history, and a coach can build a private training log alongside it. That is where a real trend shows up: not one clip measured against a printed range, but this month's numbers next to last month's, for the same person, on the same drill.
A single clip is one data point from one angle on one day. It cannot tell you whether an athlete is actually better than a teammate, because it was never measuring the same conditions for both of them. It can tell you, reliably, whether that one athlete is better than they were a month ago, provided the camera stayed where it was.
Time your next meet with the phones you already have
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Related
Should you let an athlete see their own Film Room numbers?
A number can turn a vague cue into something an athlete fixes alone between sessions, or turn them into someone running for the camera instead of the clock.
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