 Cain-Gribble/LeDuc began the season at the 2019 CS U.S. Classic, where they won gold, defeating reigning World silver medalists Evgenia Tarasova / Vladimir Morozov.They were considered one of the favourites for the gold medal at their first Grand Prix assignment of the year, the 2019 Skate America.They placed third in the short program after Cain-Gribble fell on their throw triple Lutz.