Honorary List

Niels has tallied quite a few cups, bowls and medals in his career. In addition to the Grand Slam titles listed below, Niels became World Junior Champion in 2019. He won bronze (single) and gold (doubles) at the Tokyo 2021 Paralympic Games. By winning at the European Para Championships 2023, he was assured participation in the Paralympic Games in Paris 2024. There he won gold in both singles and doubles. In addition, he is the 2022 and 2023 world champion in the quad category and won the 2021, 2023 and 2024 NEC Wheelchair singles Masters.

5

Grand slam single titles

9

Grand slam double titles

47

ITF single titles

1

ITF Quad single ranking

Australian Open

2025 single Runner-up
2025 double Runner-up
2024 single Semi-finalist
2024 double Semi-finalist
2023 single Runner-up
2023 double Winner
2022 single Quarterfinalist
2022 double Runner-up
2021 single Semi-finalist
2021 double Semi-finalist

Roland Garros

2024 single Semi-finalist
2024 double Winner
2023 single Winner
2023 double Semi-finalist
2022 single Winner
2022 double Winner

Wimbledon

2024 single Winner
2024 double Winner
2023 single Winner
2023 double Winner
2022 single Runner-up
2022 double Winner

US Open

2023 single Runner-up
2023 double Winner
2022 single Winner
2022 double Winner
2021 single Runner-up
2021 double Winner