Overview
- Castrillón collapsed on March 21 during a Sub-20 clásico against Independiente Santa Fe, received immediate care on the pitch, and was taken by ambulance to a high‑complexity hospital in northern Bogotá.
- He was admitted to intensive care under cardiovascular specialists and died on Sunday despite treatment, according to the club’s statement issued early Monday.
- Millonarios published a formal condolence message and switched its social‑media crest to black in mourning.
- Radamel Falcao and multiple teams and players shared messages of support, while the Colombian federation noted Castrillón’s recent Under‑19 call‑up under coach César Torres.
- Some outlets reported a possible cardiovascular collapse, but an official medical determination has not been made public.