Originally Posted by TheVulture
Warren Spahn had a screwball and won 23 games at age 42.
And John Smoltz regularly threw the screwball. He also ended up having 2 ligament replacement surgeries in his career. I'm not saying that if you throw a screwball that you WILL have an injury, I'm just saying that it's much more likely. The amount of torque it places on the elbow is rather extreme.