Pitching mechanics in slow motion, with the number on screen
Real deliveries, slowed down, with body tracking drawn over every frame and the measurement that matters printed next to it. Not a highlight reel. This is what our reports look like before the words get added.
What is real here: every clip below is an actual delivery run through the same engine that produces a paid report, the skeleton overlay and every number are computed from the tracked body, not animated in afterward. Single-camera measurements are estimates where depth is involved, and we mark those. No pitch velocity is measured or claimed from phone video, here or anywhere else on this site.
Six deliveries, six things to watch
Where the front foot lands sets the direction everything above it has to work around. A lot of what gets blamed on the arm actually starts down here.
Hips first, then the arm. When those fire together instead of in order, the arm ends up doing work the legs were supposed to do. We time the gap in milliseconds and mark it EST, because that is what it is.
The front leg is the post the whole delivery turns on. This one measured 57° of knee straightening into release. If that leg keeps giving, the energy has nowhere to go but the shoulder.
Load to the fastest point, timed in seconds off the same video that is already on your phone. Every coach feels tempo. Almost nobody measures it.
He could not find the zone and everyone blamed the arm. Watch the stride instead, measured against his own height so the number stays honest at any camera distance.
When the front side gives, the release point moves and the ball misses. The arm gets blamed for a leg problem more often than not.
Why frame-by-frame beats an eyeball
At full speed a delivery is a blur of opinions: too fast, too slow, arm looks late, front side looks weak. Slowed down and tracked, those opinions turn into numbers that do not change depending on who is watching. That is the entire premise of a NextPlay report: measure it first, argue about it second.
A report goes further than a clip. It measures stride, sequence timing, arm slot, release height, tempo, and front-leg brace on your pitcher's own delivery, argues what is likely causing the problem you described, and hands back a drill plan built to fix that specific leak, not a generic bullpen.
Send one delivery. Get the numbers.
Upload one video, get a coach-reviewed report with annotated frames like the ones above, every measurement, the likely cause, and a matched drill plan within 24 hours. If we cannot read your video, you do not pay.