Groningen Open26 juli 2015 00:00 - 23:23www.opengroningen.nl https://www.knbb.nl/wp-content/uploads/2025/12/KNBB-logo-2010.svg 0 0 rslotboom https://www.knbb.nl/wp-content/uploads/2025/12/KNBB-logo-2010.svg rslotboom2014-08-25 12:05:432014-08-25 12:05:43Groningen Open