Harman ya gudanar da jagorancin 54-rami a
2017 US Open da aka buga a Erin Hills a Erin, Wisconsin. Ya shiga zagaye na karshe daya daga cikin 'yan wasa uku, a 12 a karkashin par, kuma shi ne karo na farko da ya taka leda a rukuni na karshe na manyan wasanni a zagaye na karshe. Ya gama a matsayi na biyu tare da Hideki Matsuyama, bugun jini huɗu a bayan mai nasara Brooks Koepka, bayan zagaye na ƙarshe 72.