| Athletes |
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Biographical data for: Rinze ONDERWATER
| Classifications in season 2019/2020: |
| Results in season 2019/2020: |
| 222 meter |
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| 333 meter |
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| 444 meter |
| 1:04 | .390 | 03/11/19 | Alkmaar NED | Regiocompetitie-West - Sebra Sports Cup-1 | Finale, Groep 2 | |
| 1:04 | .68 | 28/12/19 | Den Haag NED | Regiocompetitie-West - Sebra Sports Cup-2 | Finale, Groep 2 | |
| 1:11 | .48 | 01/02/20 | Zoetermeer NED | Regiocompetitie-West - Sebra Sports Cup-4 | Finale, Groep 2 | |
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| 500 meter |
| 1:09 | .062 | 01/03/20 | Alkmaar NED | Regiocompetitie-West-Sebra Sports Cup Finale | Finale, Groep 2 | |
| 1:14 | .08 | 25/01/20 | Utrecht NED | Regiocompetitie-West - Sebra Sports Cup-3 | Finale, Groep 1 | |
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| 1200 meter relay |
| 3:42 | .810 | 03/11/19 | Alkmaar NED | Regiocompetitie-West - Sebra Sports Cup-1 | Finale, Groep 1 | |
| (JUN F 2: Diewertje Klooster, Oskar Loman, Rinze Onderwater, Feline Porskamp) |
| 3:55 | .97 | 28/12/19 | Den Haag NED | Regiocompetitie-West - Sebra Sports Cup-2 | Finale, Groep 1 | |
| (JF 1: Oskar Loman, Rinze Onderwater, Daan van Houten, Tobias van Kranenburg) |
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