09/01/2022
Don't ever let a coach tell you that you need to throw a pitch with a certain grip or a certain way. The key to developing your arsenal is trying different pitches with different grips until you find something that you can throw consistently with the same arm action as the rest of your pitches.
Now I am not saying to not listen to your coaches, they are trying their best to help you become the best pitcher you can be. If they show you a new pitch or a new grip, try it out and try to make it work, but if you don't feel comfortable with that pitch or grip, don't be afraid to try new pitches with new grips.
Another thing we must realize is that developing pitches takes a lot of time and practice. it might take you 3 months or maybe even a year to become comfortable with a pitch- just make sure you are playing catch with it everyday to develop it.
*Story time*:
My rookie year my pitching coach was Bob Forsch, who had a 16 year MLB career and was very good at developing young pitchers. My first day I was throwing a bullpen and while he was watching me, I threw a nasty changeup that he had questions about. I threw a palmball changeup(and I had a lot of success with it) because I was never comfortable with any other changeup grip. He told me that hitters at the higher levels would recognize the spin of that changeup so I needed to throw a circle-change. I had a lot of success over the next couple of years as a starting pitcher, but I struggled against leftys because I never got comfortable with that circle-change. I would dominate rightys, but leftys would hit .290-.310 every year off me and my GM said that kept me out of the big leagues.
After years of struggling with the circle-change, I decided to scrap it and go back to my palmball-change. It took me a couple of months to relearn it, but once I did it became one of the best pitches in my arsenal. After I got my confidence back with it, I started dominating leftys(to the tune of sub .200 BA against leftys) and my career took off. To this day I still think about how much quicker my career would have taken off if I just trusted myself and kept my change up. Again, my coach was trying to help, but as a pitcher we must trust in our ability and trust ourselves first and foremost.