| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Károly•Balzsay | |
| Used name | Károly•Balzsay | |
| Nick/petnames | Hitter, Karesz | |
| Born | 23 July 1979 in Kecskemét, Bács-Kiskun |  HUN |
| Measurements | 183 cm / 77 kg | |
| Affiliations | Kecskeméti Sport Club/Vasas Sport Club | |
| NOC | Hungary | HUN |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 2000 Summer Olympics | Boxing | HUN |
Károly Balzsay | |||
| Light-Middleweight, Men (Olympic) | =9 | |||||
| 2004 Summer Olympics | Boxing | HUN |
Károly Balzsay | |||
| Middleweight, Men (Olympic) | =9 |
