| Roles | Referee | |
|---|---|---|
| Sex | Male | |
| Full name | John Zaldivar•Machado | |
| Used name | John•Machado | |
| Born | 17 February 1897 in Plainfield, New Jersey |  USA |
| Died | 19 April 1942 (aged 45 years 2 months 2 days) in Toronto, Ontario |  CAN |
| NOC | Canada | CAN |
| Games | Sport (Discipline) / Event | NOC / Team | Phase | Unit | Role | As | |
|---|---|---|---|---|---|---|---|
| 1936 Winter Olympics | Figure Skating (Skating) | CAN |
John Machado | ||||
| Singles, Men (Olympic) | Final Standings | Final Standings | Judge #4a | ||||
| Singles, Men (Olympic) | Compulsory Figures | Compulsory Figures | Judge #4 |
