Originally, the players used to make their own baseball bat or get a wood maker to do it for them. This resulted in a huge variety of sizes, although the round baseball bat was always the most popular. With all this variety, the game was starting to swing in favour of the batter over the pitcher, so rules were instituted to bring the balance back. These rules included limiting the length and diameter of the baseball bat and requiring that the end be round instead of flat.
Today, the baseball bat is made of different types of wood or of metal, and which