Complex sentence: Perry's father, Lowell Perry, was an All-American football player at the University of Michigan in 1951 and went on to play for the Pittsburgh Steelers in 1956, where he later became the first African-American assistant coach in the NFL in 1957.
Split into simpler sentences: Perry's father, Lowell Perry, was an All-American football player at the University of Michigan in 1951. He played professionally for the Pittsburgh Steelers in 1956, where he became the first African-American assistant coach in the NFL in 1957.