Oomen in 2014
|Born||15 August 1995|
|Current team||Team Sunweb|
|2014–2015||Rabobank Development Team|
He rode at the 2014 UCI Road World Championships in the U23 category. In October 2015 it was announced that he would join Team Giant–Alpecin from 2016 on an initial three-year contract. He was named in the startlist for the 2017 Vuelta a España, where he was forced to leave with illness.
He started the season by racing in the Tour Down Under, where he finished in 15th overall and was 24 seconds behind the winning time. Oomen led Team Sunweb at the Volta ao Algarve. In May 2018, he was named in the startlist for the Giro d'Italia, which he finished in ninth place, while riding in support for Tom Dumoulin.
- 1st Overall Grand Prix Rüebliland
- 1st Time trial, National Junior Road Championships
- 2nd Overall Junior Tour of Wales
- 5th Le Trophee Centre Morbihan
- 10th Overall Grand Prix Rüebliland
- 3rd Paris–Tours Espoirs
- 8th Overall Tour des Fjords
- 1st Overall Rhône-Alpes Isère Tour
- 1st Stage 1
- 1st Paris–Tours Espoirs
- 2nd Overall Tour des Pays de Savoie Mont Blanc
- 2nd Overall Tour Alsace
- 3rd Flèche Ardennaise
- 4th Overall Istrian Spring Trophy
- 4th Overall Tour de l'Avenir
- 8th Liège–Bastogne–Liège Espoirs
- 1st Overall Tour de l'Ain
- 3rd Overall Critérium International
- 10th Overall Tour du Poitou-Charentes
- 1st Team time trial, UCI Road World Championships
- 6th Tre Valli Varesine
- 7th Overall Tour de Pologne
- 9th Overall Tour of California
- 1st Young rider classification Volta ao Algarve
- 2nd Team time trial, UCI Road World Championships
- 7th Overall Tour de Suisse
- 9th Overall Giro d'Italia
- 9th Overall Tour de Pologne
- 5th Overall Volta ao Algarve
- 9th Overall Tirreno–Adriatico
Grand Tour general classification results timeline
|Tour de France||—||—||—|
|Vuelta a España||DNF||—||—|
|—||Did not compete|
|DNF||Did not finish|
- "Team Sunweb confirm 2019 men's and women's rosters". Cyclingnews.com. Immediate Media Company. 23 November 2018. Retrieved 5 January 2019.
- "Transfer news: Changes at LottoNL-Jumbo". cyclingnews.com. 2 October 2015. Retrieved 2 October 2015.
- "2017 > 72nd Vuelta a España > Startlist". ProCyclingStats. Retrieved 17 August 2017.
- Ryan, Barry (28 May 2018). "Oomen's stock rises after impressive Giro d'Italia". Cyclingnews.com. Retrieved 28 May 2018.
- "Volta ao Algarve: Sunweb opt for youth to start 2018 European season - Cyclingnews.com". Retrieved 19 February 2018.
- "2018: 101st Giro d'Italia: Start List". ProCyclingStats. Retrieved 3 May 2018.
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