| Water Polo |
1995 World Junior Water Polo Championships |
Dunkerque |
 FRA |
Water Polo, Men |
🥉 |
 SVK |
as Štefan Gergely |
| Water Polo |
1997 European Aquatics Championships |
Sevilla |
 ESP |
Water Polo, Men |
8 |
SVK |
as Štefan Gergely |
| Water Polo |
1998 World Aquatics Championships |
Perth |
 AUS |
Water Polo, Men |
10 |
SVK |
as Štefan Gergely |
| Water Polo |
1999 European Water Polo Championships |
Firenze and Prato |
 ITA |
Water Polo, Men |
10 |
SVK |
as Štefan Gergely |
| Water Polo |
2001 European Water Polo Championships |
Budapest |
 HUN |
Water Polo, Men |
8 |
SVK |
as Štefan Gergely |
| Water Polo |
2001 World Aquatics Championships |
Fukuoka |
 JPN |
Water Polo, Men |
11 |
SVK |
as Štefan Gergely |
| Water Polo |
2003 World Aquatics Championships |
Barcelona |
ESP |
Water Polo, Men |
🥇 |
HUN |
|
| Water Polo |
2005 World Aquatics Championships |
Montréal |
 CAN |
Water Polo, Men |
🥈 |
HUN |
|
| Water Polo |
2009 World Aquatics Championships |
Roma |
ITA |
Water Polo, Men |
5 |
HUN |
|