At the 2012 Summer Olympics, he competed for the national team in the men's tournament, where he won a silver medal.[2] He made his debut for the national team in 2008, with just 17 years and 111 days of age, he is the second-youngest debutant ever in de Dutch national hockey team.[citation needed]
In 2018, Kemperman played in his third World Cup, where they won the silver medal. Due to his decision to play in the 2019 Malaysia Hockey League, he was not selected for the 2019 Pro League.[3] After the 2019 EuroHockey Championships he returned in the national team for the FIH Olympic Qualifier against Pakistan.[4] In June 2023 he announced he would retire from the national team after not having played internationally since the 2020 Summer Olympics.[5]
Born in Nijmegen, he started playing hockey when he was 5 at the local hockey club RKHV Union. In 2005 he went to HC 's-Hertogenbosch where he made his debut for the first team when he was just 15 years old. After his years at 's-Hertogenbosch, he went to Rot-Weiss Köln in Germany in 2010.[6] He played there for two seasons before returning to the Netherlands, where he joined his current club SV Kampong. In 2016 he won the 2015–16 Euro Hockey League with Kampong and then he won two consecutive Dutch national titles in 2017 and 2018. In the winter of 2019, he played in Malaysia for UniKL in the Malaysia Hockey League.[3] In December 2021 it was announced he will leave Kampong after ten seasons and will play for Amsterdam from the summer of 2022 onwards.[7]
