 acclaimed 30 for 30 documentary series introduces American Son which follows the journey of a young tennis prodigy who was behind one of the greatest upsets in sports history in 1989 as the world witnessed upheaval in Beijing 17 year old rising tennis star Michael Chang shockingly defeated the sports number one ranked player Yvonne Lendl at the French Open in one of the sports most unforgettable matches American Son director Jay Caspian Kang