Actually, I think you're leaving out Jai Alai. Think raquetball with much harder balls at higher velocities. The goatskin ball can ricochet off the wall at up to 188 miles an hour, more velocity than a fastball. Any Jai Alai aficiondado knows that there were several pros who got killed from it, at least 4 between 1920-1967, and then in 1968 helmets were made a rule after the famous Orbea took a nasty blow to the head, ending his career.