Weekend Trivia Challenge for 1/14/2017

Named for a newspaper sports editor, this American runner might have wondered what he had to do to get some respect. He was routinely described in such unflattering terms as "a lean mule." He was also pressed into service as a work horse for a flashier stable companion in spite of a heavy racing schedule of his own. In a crowning indignity, he became the victim of a cruel act of race fixing. Nonetheless, he was acclaimed as a champion and later became a member of the National Museum of Racing's Hall of Fame. Who was he?