Born in Montreal, CA, Leylah Fernandez is coached by both Romain Deridder and her father Jorge Fernandez in Boynton Beach, Florida where she lives with her parents and younger sister. According to ESPN analyst Rennae Stubbs (who has spoken to the Fernandez family), Jorge's training style "has sort of like a military training regimen" which has helped Leylah build confidence in her competitive athletic skills over the years.