Randy Johnson is a former professional baseball pitcher, widely regarded as one of the greatest left-handed pitchers in Major League Baseball (MLB) history. Born on September 10, 1963, in Walnut Creek, California, he played 22 seasons in the MLB, primarily for the Seattle Mariners, Arizona Diamondbacks, and New York Yankees. Johnson was known for his impressive fastball and devastating slider, earning him the nickname "The Big Unit." Throughout his career, Johnson achieved numerous accolades, including five Cy Young Awards, which are given annually to the best pitchers in the league. He was inducted into the Baseball Hall of Fame in 2015, solidifying his legacy in the sport. Johnson also played a key role in leading the Arizona Diamondbacks to their first World Series championship in 2001.