Randall David "Randy" Johnson (born September 10, 1963), nicknamed "The Big Unit", is a former Major League Baseball left-handed pitcher. During a 22-year career, he pitched for six different teams. The 6-foot-10-inch (2.08 m) Johnson was celebrated for having one of the most dominant fastballs in the game. He regularly approached, and occasionally exceeded, 100 miles per hour (160 km/h) during his prime. He also threw a hard, biting slider. Johnson won the Cy Young Award five times.