I recently added a 2-seamer to my arsenal, and I have some concerns about my arm health. My 2-seamer has about 6-8 inches of inside break. It looks like a lefty slider. I don’t pronate my arm when I throw it. The break just comes narurally with the grip. My main concern is that I am not actually throwing a screwball or that this will put excessive strain on my arm.
Thanks for any help,