Complex sentence: Edwin Lee "Eddie" Mathews (October 13,1931--February 18,2001) was a baseball third baseman in Major League Baseball and is regarded as one of the greatest third basemen to play the game.
Split into simpler sentences: Edwin Lee "Eddie" Mathews (October 13,1931--February 18,2001) was a Major League Baseball third baseman. He is regarded as one of the greatest third basemen ever to play the game.