Complex sentence: Angelica Gavaldon (born October 3,1973 in El Centro, California) is a retired tennis player from Mexico, who was born in the United States but comes from a Mexican family and became pro in 1990.
Split into simpler sentences: Angelica Gavaldon (born October 3,1973 in El Centro, California) is a retired tennis player from Mexico. She was born in the United States but comes from a Mexican family and turned pro in 1990.