Who won the us open men’s and women’s singles in 2017?
Rafael Nadal won his 16th Major title and 3rd US Open title, by defeating Kevin Anderson, 6–3, 6–3, 6–4 to capture the Men's Singles tennis title at the 2017 US Open. 
Who won the us open men’s singles in 2017?
Rafael Nadal "Rafa" Rafael "Rafa" Nadal Parera Rafael Nadal Parera
2017 US Open – Men's Singles
Sloane Stephens won her first Grand Slam title, defeating Madison Keys in the final, 6–3, 6–0, to win the Women's Singles tennis title at the 2017 US Open. It was the first all-American women's final at the US Open since 2002, and the second time in three years that the final featured two first-time Grand Slam singles finalists from the same country. Stephens became the second unseeded woman in the Open Era to win the US Open after Kim Clijsters in 2009.
Who won the us open women’s singles in 2017?
Sloane Stephens
2017 US Open – Women's Singles
2017 US Open – Men's Singles
https://en.wikipedia.org/wiki/2017%20US%20Open%20%E2%80%93%20Men%27s%20Singles
2017 US Open – Women's Singles
https://en.wikipedia.org/wiki/2017%20US%20Open%20%E2%80%93%20Women%27s%20Singles
Anna Margrethe "Molla" Bjurstedt Mallory (née Bjurstedt; March 6, 1884[1] – November 22, 1959) was a Norwegian tennis player, naturalized American.[2] She won a record eight singles titles at the U.S. Championships.
Molla Mallory
In 2017, Rafael Nadal won the US Open Men's Singles title, and Sloane Stephens won the US Open Women's Singles title. This was the 16th Major title and 3rd US Open title for Nadal. It was Stephens' first Grand Slam title. Molla Mallory holds the record for most US Open Singles titles with eight.