
The forearm he lost to an electric saw at thirteen gave him the name Montevideo used ever after, El Manco, and he struck Uruguay's fourth in the 89th minute of the first World Cup final on 30 July 1930. That finish sealed the 1930 World Cup, and he added Olympic gold from Amsterdam in 1928 plus South American Championships in 1926 and 1935, having already scored Uruguay's first ever World Cup goal against Peru. Career record: 25 caps and 18 goals for Uruguay; club career at Club Nacional de Football, Estudiantes de La Plata.
| 1923–1932 | Club Nacional de Football |
| 1932–1933 | Estudiantes de La Plata |
| 1933–1936 | Club Nacional de Football |
| Uruguay | 25 caps, 18 goals |
Uruguay legends whose careers overlapped Castro's
One rank above: Ángel Romano at #16.
One rank below: Ladislao Mazurkiewicz at #18.
Uruguay's editorial top five: Juan Alberto Schiaffino · Luis Suárez · Enzo Francescoli · Héctor Scarone · José Leandro Andrade.