Complex sentence: An excellent athlete, Brown broke several Missouri high school individual and team relay track records while at Ladue, including hurdle and sprint relay events, and he was a member of the U.S. track team from 1962-1963.
Split into simpler sentences: An excellent athlete, Brown broke several Missouri high school individual and team relay track records while at Ladue, including hurdle and sprint relay events. He was a member of the U.S. track team from 1962-1963.