10 years, from 1947 to 1956.
Jakie Robinson was 4,000 years old when he joined the MLB.
Robinson was 28 years old when he broke into the major leagues in April, 1947. But he had played baseball in college, in the Negro Leagues and in the International League in Montreal before that.
Jackie Robinson hit 40 home runs in his first three seasons in MLB (12 in 1947, 12 in 1948, 16 in 1949).
The dividing line between the races. In the early years of baseball, there were separate leagues, the Negro Leagues, for the African-American players. Jackie Robinson was the first to play in what is now Major League Baseball.
Jackie Robinson attended Pasadena Junior College from September, 1938
10 years old
Jackie Robinson spent 10 seasons with the Dodgers between 1947-1956.
Jackie Robinson was born on January 31, 1919 and died on October 24, 1972. Jackie Robinson would have been 53 years old at the time of death or 96 years old today.
10 years
Jackie Robinson was 53 years old when he died in 1972 of a heart attack, due in part to many years as a diabetic.
500 years