| Code | ATH-M-003786 |
|---|---|
| Gender | Male |
| Full name | Sebastian Michał•Chmara |
| Used name | Sebastian•Chmara |
| Born | 22 November 1971 |
| Sport | Competition | Host City | Country | Event | Placement | Country | |
|---|---|---|---|---|---|---|---|
| Athletics | 1995 Summer Universiade | Fukuoka | Decathlon, Men | 🥈 | |||
| Athletics | 1998 European Athletics Indoor Championships | Valencia | Heptathlon, Men | 🥇 | |||
| Athletics | 1999 World Athletics Indoor Championships | Maebashi | Heptathlon, Men | 🥇 |