John Kostecki
| Country | United States (USA ) |
| World Sailing MNA code | USA |
| Hometown | |
| NSCA sailnumber | |
| Sailing club | n/a |
| Worldchampion in | 1982 |
| Nick name | |
| Boat name | |
| Social network[s] |
| Internet links |
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| Hall of fame interview |
| America's Cup |
| Other Sunfish results | |
|---|---|
| 1982-Sunfish-Championship of Champions (USA) | 1 |
| Results in other classes | |
|---|---|
| 2011-Farr 40-Worlds (USA) | 1 |
| 2010-12 Metre-America's Cup (USA) | 1 |
| 2010-RC 44-Worlds (USA) | 1 |
| 2002-VOR-Volvo Ocean Race (USA) | 1 |
| 1997-Mumm 36-Worlds (USA) | 1 |
| 1989-6 Metre-Worlds (- ) | 1 |
| 1988-J24-Worlds (USA) | 1 |
| 1988-Soling-Worlds (USA) | 1 |
| 1988-Soling-Olympic Games ( ) | 2 |
| 1987-J24-Nationals (- ) | 1 |
| 1986-Soling-Worlds (- ) | 1 |
