Quadruple portion value Double portion value Single portion value Treble portion value
3 2 5 4
100 25 75 50
Exact score Double only Double or bull shot Triple score
11 10 8 9
World Darts Federation World Darts Council British Darts Organisation American Darts Association
Inventing Dartboard Establishing BDO Inventing the numbering system First 9 dart finish
8 feet 6 feet 5 feet 7 feet 9.25 inches