BDO Pro Tour

The World Darts Federation recognise many darts tournaments each year including major titles such as the Lakeside World Professional Championship and the Winmau World Masters. Through 2007, the WDF had held four majors which constituted the Grand Slam, until the Topic International Darts League and Bavaria World Darts Trophy were cancelled in 2008...
Found on http://en.wikipedia.org/wiki/BDO_Pro_Tour
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