The heaviest bat used in MLB history is often attributed to Edd Roush, a Hall of Fame outfielder who played primarily in the 1910s and 1920s. Roush famously used a bat that weighed around 48 ounces (1.36 kilograms), which is significantly heavier than the typical bats used in professional baseball. He believed that the heavier bat gave him more power and allowed him to hit with greater distance. While Roush's choice of a heavier bat was unique and earned him a reputation, it is worth noting that regulations and preferences regarding bat weight have changed over time, and modern players generally use lighter bats for increased bat speed.
