Sumio Hayakawa
Biographical information
| Roles | Referee |
|---|---|
| Sex | Male |
| Full name | Sumio•Hayakawa |
| Used name | Sumio•Hayakawa |
| NOC |  Japan |
Referee
| Games | Sport (Discipline) / Event | NOC / Team | Phase | Unit | Role | As | |
|---|---|---|---|---|---|---|---|
| 1964 Summer Olympics | Football (Football) | JPN |
Sumio Hayakawa | ||||
| Football, Men (Olympic) | Match 3/4 | Unified Team of Germany — United Arab Republic | Linesman | ||||
| Football, Men (Olympic) | Match #2 | Hungary — United Arab Republic | Linesman | ||||
| Football, Men (Olympic) | Match #1 | Hungary — Morocco | Linesman | ||||
| Football, Men (Olympic) | Match #3 | Hungary — Yugoslavia | Linesman |