Skip to main content
Netherlands News in English

Main navigation

  • Top stories
  • Health
  • Crime
  • Politics
  • Business
  • Tech
  • Culture
  • Sports
  • Weird
  • 1-1-2
Image
^5E3F97A7D8ACD759A666D18105F1E9E715B992AB142D44D5DF^pimgpsh_fullsize_distr
Mark de J. (Photo: Mark de J. / Facebook) - Credit: Mark de J. (Photo: Mark de J. / Facebook)
Crime
Bilthoven
gambling debts
Koen Everink
manslaughter
Mark de J.
murder
online poker
tennis coach
Monday, 28 March 2016 - 11:45

Share this article:

Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window

Tennis coach’s gambling debts led to murder, say poker players

Tennis coach Mark de J. and murdered business man Koen Everink were fighting over De J.'s gambling debt. De J. is suspected in Everink's murder. The tennis coach has thousands of euros in gambling debt, accrued by playing poker. Including 80 thousand euros he owed Everink, insiders in the poker world told website Pokernews.nl. According to the poker players, De J. often played poker online, but was not all that good at it. With generally only small amounts at stake, the tennis coach managed to lose nearly 63 thousand euros on poker site PokerStars. Pokernews.nl reports that Koen Everink lent 80 thousand euros to to De J. to help with his poker debts, but he wanted the money back in the short term. He knew about De J.'s gambling problems and threatened to expose them to the media. Everink and De J. knew each other for a few years. Everink was very interested in tennis and often traveled with professional players to tournaments, including Robin Haase. De J. coached Haase since 2014. On March 3rd De J. went to Everink's house to watch football with him. Everink's body was discovered the next morning. He was stabbed to death. De J. went to the police to give a witness statement, saying that he saw suspicious people around Everink's home that night, according to the site. The police were not convinced and arrested De J. last week, as he was returning from a tennis tournament in Miami. The tennis coach was arraigned on Saturday. He was remanded back into custody for another 14 days, according to the Telegraaf.

More like this

Image
Close-up of a judge’s gavel
Man jailed for 21 years after strangling ex-girlfriend with dog chain in femicide case
Image
Crime scene tape and a police car, with police officers in the background
Suspect in Leiderdorp murder had been scheduled for court over death threats
Image
A woman was found murdered in her home on Molenstraat in Hellevoetsluis on 16 April 2025. The photo shows a mobile police unit and crime scene tape cordoning off the scene.
Fewer than 100 murders reported in the Netherlands this year, incl. 10 in Amsterdam
Image
Domestic violence helpline
No decrease in femicide in Netherlands in 15 years
Make NL Times your top Google source

Follow us:

Latest stories

  • Council of State strongly opposes plan to scrap asylum distribution law
  • Video: Escaped monkey from Beekse Bergen still on the loose after nearly a month
  • Dutch U.S. ambassador sends Venezuelan opposition leader’s plane back during the flight
  • No free water at Arnhem festival where high heat injured five; Water cost over €14/liter
  • Netherlands summons Russian ambassador over Russia's hacking of military supply routes

Top stories

  • Ter Apel asylum center area declared safety risk zone after recent stabbings, fights
  • Suspect in ABN Amro worker's fatal stabbing also harassed four other women
  • New public transport strikes looming as contract talks stall
  • Explosion at apartment complex in Woerden; Dozens of homes evacuated
  • Dutch SMEs investing less due to high costs and inconsistent gov't policy: study

© 2012-2026, NL Times, All rights reserved.

Footer menu

  • Change Privacy Settings
  • Privacy Policy
  • Contact
  • Partner Content