<P> Robinson's major league debut brought an end to approximately sixty years of segregation in professional baseball, known as the baseball color line . After World War II, several other forces were also leading the country toward increased equality for blacks, including their accelerated migration to the North, where their political clout grew, and President Harry Truman's desegregation of the military in 1948 . Robinson's breaking of the baseball color line and his professional success symbolized these broader changes and demonstrated that the fight for equality was more than simply a political matter . Martin Luther King, Jr. said that he was "a legend and a symbol in his own time", and that he "challenged the dark skies of intolerance and frustration ." According to historian Doris Kearns Goodwin, Robinson's "efforts were a monumental step in the civil - rights revolution in America...(His) accomplishments allowed black and white Americans to be more respectful and open to one another and more appreciative of everyone's abilities ." </P> <P> Beginning his major league career at the relatively advanced age of twenty - eight, he played only ten seasons from 1947 to 1956, all of them for the Brooklyn Dodgers . During his career, the Dodgers played in six World Series, and Robinson himself played in six All - Star Games . In 1999, he was posthumously named to the Major League Baseball All - Century Team . </P> <P> Robinson's career is generally considered to mark the beginning of the post--"long ball" era in baseball, in which a reliance on raw power - hitting gave way to balanced offensive strategies that used footspeed to create runs through aggressive baserunning . Robinson exhibited the combination of hitting ability and speed which exemplified the new era . He scored more than 100 runs in six of his ten seasons (averaging more than 110 runs from 1947 to 1953), had a . 311 career batting average, a . 409 career on - base percentage, a . 474 slugging percentage, and substantially more walks than strikeouts (740 to 291). Robinson was one of only two players during the span of 1947--56 to accumulate at least 125 steals while registering a slugging percentage over . 425 (Minnie Miñoso was the other). He accumulated 197 stolen bases in total, including 19 steals of home . None of the latter were double steals (in which a player stealing home is assisted by a player stealing another base at the same time). Robinson has been referred to by author David Falkner as "the father of modern base - stealing". </P> <P> Historical statistical analysis indicates Robinson was an outstanding fielder throughout his ten years in the major leagues and at virtually every position he played . After playing his rookie season at first base, Robinson spent most of his career as a second baseman . He led the league in fielding among second basemen in 1950 and 1951 . Toward the end of his career, he played about 2,000 innings at third base and about 1,175 innings in the outfield, excelling at both . </P>

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