Bjorn Fratangelo grew up in Pennsylvania under the guidance of his parents, Mario and Pam Fratangelo.
Mario Fratangelo, born in Italy, moved to the United States at age 10. He taught himself tennis by watching Björn Borg and later coached his son from age 3 until Bjorn turned 19. The family relocated from Plum, Pennsylvania, to Naples, Florida, to support advanced training.