April 18, 1950 – At the Polo Grounds, 33 year old Sam Jethroe makes his debut becomes the first black to play for the Boston Braves. A former Cleveland Buckeyes star, he goes 2 for 4, including a home run, to lead the Braves to an 11 – 4 beating of the New York Giants. Warren Spahn is the winner. Jethroe will go on to lead the majors with 35 stole bases and become National League Rookie of the Year .