Yorihide Isogai had the following finishes at major championships – 1974 World Championship: Unlimited Freestyle (6th); 1974 Asian Games: Unlimited Freestyle (1st); 1970 Asian Games: Unlimited Freestyle (2nd).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1968 Summer Olympics | Wrestling | Yorihide Isogai | ||||
| Heavyweight, Greco-Roman, Men (Olympic) | =13 | |||||
| Heavyweight, Freestyle, Men (Olympic) | =13 | |||||
| 1972 Summer Olympics | Wrestling | Yorihide Isogai | ||||
| Super-Heavyweight, Freestyle, Men (Olympic) | =9 | |||||
| 1976 Summer Olympics | Wrestling | Yorihide Isogai | ||||
| Super-Heavyweight, Freestyle, Men (Olympic) | 6 |