[2] His sister, Katish Hernández, has also represented Colombia internationally in trampoline and won three medals at the 2019 South American Championships.

[8] Hernández was on track to win the gold medal at the 2014 Central American and Caribbean Games, but a mistake on the final jump cost him the title.

[9] Hernández won a bronze medal at the 2015 Pan American Games behind Keegan Soehn and Steven Gluckstein.

[10] He then competed at the 2015 South American Championships and won a gold medal in the synchro event with his brother-in-law, Alvaro Calero.

[7] He returned to competition in 2021, winning the gold medal in the individual event at the 2021 Pan American Championships and qualifying for the Summer Olympics.

[20] Hernández represented Colombia at the 2020 Summer Olympics, held in 2021, and finished ninth in the qualification round, making him the first reserve for the final.

[24] He then won the gold medal at the 2023 Pan American Games and received the continental berth for the 2024 Summer Olympics.

[27] Hernández represented Colombia at the 2024 Summer Olympics at the age of 29, making him the oldest competitor in the men's trampoline event.