Belgium | Australian Open | French Open | Open University | open source | Belgium national football team | U.S. Open | Leopold II of Belgium | Wacken Open Air | The Open Championship | U.S. Open (tennis) | All England Open Badminton Championships | U.S. Open (golf) | Open Source | Open-pit mining | Albert II of Belgium | 2006 Australian Open | Open Software Foundation | Leopold I of Belgium | Indira Gandhi National Open University | Albert I of Belgium | Monarchy of Belgium | Leopold III of Belgium | Lamar Hunt U.S. Open Cup | Nieuwpoort, Belgium | French Community of Belgium | 2005 Australian Open – Men's Singles | Waterloo, Belgium | U.S. Women's Open | open access |
He was also a semi-finalist in the 2011 Mariflex Open, a quarter-finalist in the 2011 German Open and Belgium Open.