Full name: Jacques Marie De Wykerslooth De Rooyesteyn
Gender: Male
Born: July 8, 1896 in Brussels, Région de Bruxelles-Capitale, Belgium
Died: July 19, 1988 in Guirsch, Luxembourg, Belgium
Country:
Belgium
Sport: Modern Pentathlon
| Games | Age | City | Sport | Event | Team | NOC | Rank | Medal | |
|---|---|---|---|---|---|---|---|---|---|
| 1924 Summer | 27 | Paris | Modern Pentathlon | Men's Individual | Belgium | BEL | 29 |
| Games | Age | City | Sport | Country | Phase | Unit | Rank | O | TH | PTS | 10s | 9s | T | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1924 Summer | 27 | Paris | Modern Pentathlon | Belgium | Final Standings | 29 | 123.0 | |||||||
| 1924 Summer | 27 | Paris | Modern Pentathlon | Belgium | Shooting | 25 | 17 | 140 | 2 | 6 | ||||
| 1924 Summer | 27 | Paris | Modern Pentathlon | Belgium | Swimming | 31 | 7:41.6 | |||||||
| 1924 Summer | 27 | Paris | Modern Pentathlon | Belgium | Riding | 17= | 111.5 | |||||||
| 1924 Summer | 27 | Paris | Modern Pentathlon | Belgium | Running | 27 | 15:08.6 |