Rack Difficulty Level (RDL)
This new metric, devised by Pool Stats, tries to understand the inherent complexity of any given rack after the break. It takes into consideration the overall average shot difficulty of a rack for both players and the total number of shots by both players for the entire rack. It then compares these values to the overall average we have computed for the matches we have recorded. The overall average is different for the games of 8, 9, and 10 ball, and the difficulty of the average rack is computed continuously to provide an accurate measure of variance for any give rack that was recorded with our software.
RDL can be seen has a raw number with higher than average representing a more difficult than average rack and a lower than average represting an easier than average rack. RDL can also be computed as a percentage of variance from the difficulty of the average rack. This is the most basic way to understand the complexity of an arbritrary rack and whether or not the rack a player wins or loses was easy or hard. It is abstract in nature, as it tries to understand the basics of what makes a rack difficutlt. This is not an all-encompassing stat, as no stat is, but does provide a general understanding to the inherent complexities of a rack after the break.
Full press release can be found here:
https://poolstats.co/rack-difficult...g-a-given-layout-of-the-table-after-the-break
A more thorough analysis, aka A White Paper, will be released sometime early next year.
RDL - 9-Ball Games Recorded
http://poolst.at/rdl9
