Complex sentence: Born into a prominent family from Philadelphia, he enrolled at Princeton University in 1910 and excelled on both the university's hockey and football teams, and later became a noted amateur hockey player for the St. Nicholas Club in New York City.
Split into simpler sentences: Born into a prominent family from Philadelphia, he enrolled at Princeton University in 1910. Baker excelled on both the university's hockey and football teams, and later became a noted amateur hockey player for the St. Nicholas Club in New York City.