| 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 in Toronto, Ontario (CAN) |
| NOC | Canada |
| Games | Sport (Discipline) / Event | NOC / Team | Phase | Unit | Role | As | |
|---|---|---|---|---|---|---|---|
| 1936 Winter Olympics | Figure Skating (Skating) | CAN |
John Machado | ||||
| Singles, Men (Olympic) | Final Standings | Judge #4a | |||||
| Singles, Men (Olympic) | Compulsory Figures | Judge #4 |