The Dual Legacy of the Big Unit: From Diamond Dominance to Canvas Serenity Before he was a master of light and texture on canvas, Randall David Johnson was a force of nature on the baseball diamond. Known globally by his moniker, “The Big Unit,” Johnson’s presence was defined by an imposing physical stature and a legendary, blistering fastball that commanded the attention of millions. Born on September 10, 1963, in Walnut Creek, Calif…