Kammala jumla mai zuwa: A shekara ta 2017, Díaz ya yi rashin nasara a wasan da ya buga da Ethan Tracy a Gasar Club Colombia. Kammalawa ya motsa shi daga waje na saman 700 a cikin Official World Golf Ranking zuwa na 462, wanda ya cancanci shi zuwa WGC-Mexico Championship ta hanyar kasancewa mafi girman ɗan wasan golf na Mexico. Díaz kuma ya cancanci zuwa
US Open, babban gasarsa ta farko, lokacin da Phil Mickelson ya janye don halartar kammala karatun 'yarsa. Zai ci gaba da harbi 72-76 don ya rasa yanke. Diaz ya gama 25th a cikin 2017 Web.com Tour rankings, matsayi na ƙarshe da aka tabbatar don katin PGA Tour.