Underneath the standard 20 through 15 and B, mark D (for doubles), T (for triples), and 3B (for three-in-a-bed ). (Three-in-a-bed means all three darts in the same scoring area.
Underneath the standard 20 through 15 and B, mark D (for doubles), T (for triples), and 3B (for three-in-a-bed ). (Three-in-a-bed means all three darts in the same scoring area.