I'm saying that I'm 100% certain. We recognized with videoJDBerry,
I'm with you on how the rollover looks and feels. But after watching some slo mo video, then going out and taking some slo mo of myself, I found that what I thought was happening didn't. If I was to take a snapshot of the exact moment of release between my peel and rollover pitches, it would be tough to tell them apart. As much as it feels like my fingers are coming up and over the ball, they just don't.
What I've found in many pitches is that PC's tell students to do or feel the release a certain way to get the result:
-pull their fingers up the front side of the ball for a rise
-pull them over the top and down the front for a rollover,
In warmups they practice these spins in this slower and exaggerated fashion, but when they throw full speed and we watch in slo mo, it actually isn't happening. The feel gets the result and it tends to blur reality and becomes perpetuated as reality.
Don't trust me or anyone else--check it out for yourself in slo mo.
Ken
We call it going over the basketball or getting around the softball. Going over the basketball results in a release where the hand is like at the top back of the ball. It just skims up the backside. For a young kid it doesn't generate much spin and the ball "floats". Getting arounf the softball and driving dow generates noticeable spin and noticeable drop on a ball only travelling 40mph.
One day I'll get video and show. I had some in right view pro on my phone but deleted them for space