Difference Between Fast Pitch & Slow Pitch Softball Bats

While slow-pitch and fast-pitch softball games follow the same basic rules, they are different, especially when it comes to batting. A ball coming over the plate at a fast rate of speed requires quick reaction time and a certain bat. A ball coming over the plate at a different angle and slower also requires a certain bat.

  1. Fast-Pitch Length and Weight

    • The most common lengths for fast-pitch bats are 32 to 34 inches, and they generally weigh less than slow-pitch bats (about 23 to 28 ounces). According to an article written by Daniel A. Russell, an associated professor of applied physics at Kettering University, a lighter bat may produce more bat speed, which is key in relation to generating power.

    Slow-Pitch Length and Weight

    • Slow-pitch bats are usually 33 to 34 inches long, and the most popular weight is 28 ounces. However, in the 1970s and 1980s, these bats were much heavier. Generally, therer is more reaction time available in the slow-pitch game, so bat weight is less of a critical factor.

    Moment of Inertia

    • The moment of inertia is a complicated term that invovles the bat's weight, length, speed and the distribution of mass in how heavy the bat "feels" during a swing. Two bats can have the same weight and length, but if the distribution of that weight along the length is different, the bats could "feel" lighter or heavier for the player. Just because a bat weights 30 ounces doesn't mean it'll feel like 30 ounces. Depending on where the distribution of weight is, it could feel like 24 ounces during the swing. The key to finding a moment of inertia you like is to pick up a bat and swing it.

    Fast-Pitch Bats

    • For fast-pitch purposes, a player should consider a bat he can swing around quickly with great control. Because of the speed of the pitch, a heavy bat isn't necessary in generating power.

    Slow-Pitch Bats

    • For slow-pitch purposes, a player may likely prefer a heavier bat as there is more reaction time available.

    Problems

    • According to the article by associated professor Daniel A. Russell, a player could use a slow-pitch bat in a fast-pitch game, but the weight of the bat could affect the reaction time. He does not recommend using a fast-pitch bat in a slow-pitch game as the bat barrel can become damaged.