Answer: Billie Jean King Female legendary tennis player, Billie Jean King defeated ex-world number 1, Bobby Riggs in 1973 to come out victorious in the famous "Battle of the Sexes" tennis game. She won the game by 6-4, 6-3, 6-3 result.
Answer: Sergi Bruguera Sergi Bruguera defended his title by beating Alberto Berasategui, his fellow countryman in the final of the tournament. He won by a set result of; 6-3, 7-5, 2-6, and 6-1.
Answer: Lucas Pouille Rafael Nadal lost in the quarterfinals of the 2016 U.S. Open Champions to French international, Lucas Pouille. The competition was organized at the USTA Billie Jean King National Tennis Center in the City of New York.
Answer: Novak Djokovic Marin Cilic could not defend his title, as he was defeated by Novak Djokovic in the semi-finals of the tournament. Djokovic eventually went on to win the final by beating Roger Federer.