| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Male | 
| Full name | Roberto•Vallejo Contreras | 
| Used name | Roberto•Vallejo | 
| Born | 1 June 1935 in Salvatierra, Guanajuato (MEX) | 
| Measurements | 165 cm / 62 kg | 
| NOC |  Mexico | 
Roberto Vallejo had the following finishes at major championships: 1959 Pan American Games freestyle featherweight -62 kg (2nd); 1967 Pan American Games freestyle featherweight -63 kg (2nd).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1960 Summer Olympics | Wrestling |  MEX | Roberto Vallejo | |||
| Featherweight, Freestyle, Men (Olympic) | =12 |