So basically, I had 3 private lessons with my school pitching coach, a very educated guy who pitched D1 and coaches top notch teams. We were throwing a 24 pitch bullpen and he started asking about my arm slot. I said I hadn’t always thrown like that and he asked why I changed, I didn’t really know. He suggested I work on going back to a 3/4 slot for more opportunity as I get older and better downword motion. He gave me a drill and said I drop my elbow when I’m turning it forwards the place instead of turning and going. I was wondering if this is safe as I hadn’t always made a sidearm slot and I am going to try it. Here is an older video but I have a new one with bad quality and same arm slot as new one.
What arm slot is this?