As Jim said, the IP isn’t really far off. It’s only unbelievable based on the IP they throw now. While Ryan was a unicorn, there were other guys in his era and right before like Gibson, Feller, Carlton, etc that it’s accepted they threw in the 90’s with nasty stuff. Really I think it’s much less about any kind of physical evolution in baseball, it’s just a matter of more kids being exposed to baseball and playing it as a sport and developing their skills.