Klein was born in Indiana and played in the minor leagues from 1924 to 1928. In 1928 he was called up to the majors by the Philadelphia Phillies and his career took off. He quickly became one of the top hitters in the league and in 1930 he won the National League Triple Crown by leading the league in batting average, home runs, and RBIs. He was also named the league's Most Valuable Player that year.
Klein went on to have an impressive career throughout the 1930s, and in 1932 he led the league in home runs again. He was traded to the Chicago Cubs in 1936 and continued to hit the ball well. He was traded back to the Phillies in 1939 and in 1940 he led the league in home runs for the third time.
Klein's career began to decline in the early 1940s and he retired in 1944. He finished his career with a .320 batting average, 300 home runs, and 1,201 RBIs. He was inducted into the Baseball Hall of Fame in 1980 and was a four-time All-Star.
Klein was a powerful hitter who was one of the best of his era. He was the first player in National League history to win the Triple Crown and he was a four-time All-Star. He was inducted into the Baseball Hall of Fame in 1980 and is remembered as one of the greatest hitters of all time.
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