In his youth, Lassiter showed signs of uncanny hand-eye coordination, both in the areas of pool and baseball. In sandlot baseball games, Lassiter was an ace pitcher. According to his friends, who affectionately referred to him as "Bud," he was the player everyone wanted on his team. Lassiter's younger brother, Clarence, spoke of his brother's ability to pitch: "Coach was always trying to sign him up. You know, Bud could "pitch" a ball. But by then, pool had caught him and he didn't care about the athletic end of things. The coach pestered him and pestered him and tried to get him to play, because he had a natural talent for baseball. But he didn't use it; he was trapped by pool."