Background
He has been a member of the Dutch national basketball team and holds a New Zealand passport because of his mother. Duinker was born and raised in Sydney, New South Wales to a Dutch father and a Kiwi mother.
He has been a member of the Dutch national basketball team and holds a New Zealand passport because of his mother. Duinker was born and raised in Sydney, New South Wales to a Dutch father and a Kiwi mother.
He attended Street Pius X College where he was a four-year starter and captain for coach Neil Gibson. In November 2007, he graduated from Street Pius X. In 2007, he also played for the Hornsby Spiders of the Waratah League.
In January 2008, Duinker moved to the United States to attend the University of Richmond and play for the Spiders. He began practicing with the team and took classes in the spring semester but did not play in any games after redshirting the season. In Duinker"s four-year college career, he played 121 games while averaging 2.7 points and 1.5 rebounds per game.
The Spiders managed to reach the Atlantic 10 Tournament final in 2010, but managed to one-up the next season, winning the 2011 Atlantic 10 Tournament and going on the National Collegiate Athletic Association Sweet 16.
Duinker went undrafted in the 2012 National Basketball Association draft. He later signed with Cáceres Central Bank of Spain for the 2012-2013 season.
In 35 games, he averaged 7.3 points and 5.1 rebounds per game. On 31 July 2013, Duinker signed with Zorg en Zekerheid Leiden of the Netherlands for the 2013-2014 season.
On 17 June 2014, Duinker signed a two-year deal with the Sydney Kings of the Australian National Basketball League.
On 15 December 2014, Duinker signed with the Nelson Giants for the 2015 New Zealand NBL season. In May 2015, he declined to take up the second-year player option on his contract with the Sydney Kings, thus making him a free agent. After being tested by PBC Lukoil Academic in early September 2015, Duinker later signed with Egis Körmend of the Hungarian League for the 2015-2016 season.