Question: Who won the 2017 mens us open tennis?
qaPairs: question: Who won the 2017 mens singles us open tennis?
answer: Rafael Nadal
question: Who from the Netherlands won the 2017 mens doubles us open tennis?
answer: Jean-Julien Rojer
question: Who from Romania won the 2017 mens doubles us open tennis?
answer: Horia Tecău
question: Who won the 2017 mens champions invitational us open tennis?
answer: John McEnroe
Patrick McEnroe