2.Diamond Belt Tournament
Mexico City, Mexico
August 6-9, 1958
results probably incomplete
Quarterfinals
| 1958-08-06 | 51kg | Armando Blanco | VEN | Cyril Woodland | USA | PTS |
| 1958-08-06 | 51kg | Carlos Gomez | MEX | Jose Rigores | CUB | PTS |
| 1958-08-06 | 51kg | Akio Maki | JPN | Les Shaether | AUS | PTS |
| 1958-08-06 | 54kg | Ricardo Salas | VEN | Charles Branch | USA | PTS |
| 1958-08-06 | 54kg | Epifanio Sandino | DOM | Takeshi Muromoto | JPN | PTS |
| 1958-08-06 | 54kg | Oliver Taylor | AUS | William Roncouit | CUB | PTS |
| 1958-08-06 | 57kg | Wally Taylor | AUS | Roberto Cornejo | MEX | PTS |
| 1958-08-06 | 57kg | Juan Mena | CUB | Jose Francisco Sanchez | DOM | PTS |
| 1958-08-06 | 60kg | Felix Llende | VEN | Ruben Camargo | CUB | PTS |
| 1958-08-06 | 60kg | John Leckie | AUS | Juan Espino | DOM | PTS |
| 1958-08-06 | 60kg | Jose Luis Cruz | MEX | Jose Stable | CUB | PTS |
| 1958-08-06 | 63,5kg | Guadelupe Ochoa | MEX | Vincent Shomo | USA | PTS |
Semifinals
| 1958-08-08 | 51kg | Carlos Gomez | MEX | Fausto Almonte | DOM | PTS |
| 1958-08-08 | 51kg | Akio Maki | JPN | Armando Blanco | VEN | PTS |
| 1958-08-08 | 54kg | Raul Barcelo | MEX | Epifanio Sandino | DOM | KO |
| 1958-08-08 | 54kg | Ricardo Salas | VEN | Oliver Taylor | AUS | PTS |
| 1958-08-08 | 57kg | Wally Taylor | AUS | Juan Mena | CUB | PTS |
| 1958-08-08 | 57kg | Carlos Hernandez | VEN | Grant McEwan | USA | KO |
| 1958-08-08 | 60kg | Felix Llende | VEN | Adam Ellison | USA | PTS |
| 1958-08-08 | 60kg | Jose Luis Cruz | MEX | John Leckie | AUS | PTS |
| 1958-08-08 | 63,5kg | Miguel Mateos | DOM | Andres Torres | CUB | PTS |
| 1958-08-08 | 63,5kg | Guadelupe Ochoa | MEX | Leopold McGrath | CAN | PTS |
| 1958-08-07 | 71kg | Lawrence Cardial | CAN | William Fitzpatrick | AUS | PTS |
| 1958-08-07 | 71kg | Fidel Odreman | VEN | Angel Centellas | CUB | ??? |
Finals
| 1958-08-09 | 51kg | Carlos Gomez | MEX | Akio Maki | JPN | PTS |
| 1958-08-09 | 54kg | Ricardo Salas | VEN | Raul Barcelo | MEX | PTS |
| 1958-08-09 | 57kg | Carlos Hernandez | VEN | Wally Taylor | AUS | PTS |
| 1958-08-09 | 60kg | Felix Llende | VEN | Jose Luis Cruz | MEX | TKO |
| 1958-08-09 | 63,5kg | Guadelupe Ochoa | MEX | Miguel Mateos | DOM | PTS |
| 1958-08-09 | 67kg | Enrique Tovar | VEN | Jose Gomez | MEX | PTS |
| 1958-08-09 | 71kg | Wilbert McClure | USA | Lawrence Cardial | CAN | PTS |
| 1958-08-09 | 75kg | Fidel Odreman | VEN | Raul Diaz de Leon | MEX | PTS |
| 1958-08-09 | 81kg | Anthony Madigan | AUS | Salomon Gutierrez | MEX | TKO 2 |
| 1958-08-09 | +81kg | Marcelino Lopez | CUB | James Blythe | USA | PTS |