Guess which lefty invented the modern Baseball Bat?

A large number of baseball players are left-handed, but none more famous than the "sultan of Swat", Babe Ruth.  Credited with the invention of the modern baseball bat, he was the first player to order a bat with a knob on the end of the handle.

Louisville Slugger produced the bat that he hity twenty-nine home runs with in 1919.

from "the left-hander's calendar"