Wikipedia - Bjorn Fratangelo
Bjorn Fratangelo ( bee-ORN frə-TAN-jə-loh; born July 19, 1993) is an American tennis coach and former professional player.
In 2011, he won the boys' singles title at the French Open defeating Dominic Thiem. Fratangelo was only the second American to win the event, following John McEnroe in 1977.