Complex sentence: Arthur Ashe and his friend Pancho Gonzales came to coach Farrow, who won the Missouri state singles championships for Sumner High in 1974,1975, and 1976, and went on to star at Southern Illinois University.
Split into simpler sentences: Arthur Ashe and his friend Pancho Gonzales came to coach Farrow. Farrow won the Missouri state singles championships for Sumner High in 1974,1975, and 1976, and went on to star at Southern Illinois University.