Making their international debut, Smart/Díaz took silver behind Elliana Pogrebinsky / Alex Benoit at the Lake Placid Ice Dance International in late July 2016. They later competed at three ISU Challenger Series events, placing 4th at the 2016 U.S. International Classic, 6th at the 2016 CS Autumn Classic International, and 6th at the 2016 CS Finlandia Trophy, before winning gold at the Open d'Andorra.