Here at Pool Stats LLC we have worked long hours to bring advanced metrics to the game of pool using advanced mathematics and statistics. Following is a list of some of the pool sabermetrics we have created that will be available to paid members of our web dashboard.
SP+ : Adjusted Shooting Percentage. This is a metric that adjusts a players shooting percentage based on the table size they played on, i.e., a medium probability shot on a 6' table might be considered a low probability on a 9' table and so forth. This input is required in the app and so it makes the data available to us. Basically, this metric is a weighted average of a persons shooting percent with a predefined weight based on table size. The metric ranges from 0-500+, where 0-99 is below average, 100 is average, 101-200 is above standard shooting percentage, 201-300 is considered a very strong player and 300+ is considered a professional player.
CSP : Clutch Shooting Percentage. This is a weighted average based on clutch shooting, i.e., how man balls are left on the table when shooting the 8 or 9 ball or the last few shots before sealing the victory. This is a metric seen in baseball and basketball and reflects the players ability to perform well when the game is in question.
Plus/Minus : +/- of opponent balls left on the table after the winning player pockets the 8 or 9 ball. This is similar to the +/- seen in hockey and can reflect how well a player cleans up before his opponent has a chance at shooting the last remaining ball.
PWL : Pythagorean Win/Loss. This is something Bill James came up with when devising his sabermetric system for baseball. We have adapted the concept for the game of pool. It calculates the true value of win/loos % based on a number of factors, such as your opponent scratching on the 8 or 9 ball, or accidentally hitting the 8 or 9 ball in a random stroke of bad luck. It values that a player should have had more wins (or more losses) based on these outcomes and is a seen as a sensitive type of statistic.
MLoW : Maximum Likelihood of Winning. This is a very advanced stat that uses deep statistics and is multivariate based on the players sample of shot probability selection, made shots, games played, wins and the opponents skill level. In simple terms, it predicts how likely you are to win a match based on your data input from our app. The equation has been sketched out, however a large sample size of data is needed to refine it to a more accurate prediction and a final version of the stat won't be available until our model suggests we have enough data.
These are just a handful of the advanced metrics we have devised and many more are in the works as we write this. We love mathematics and statistics and writing equations is more fun than writing code, so expect a lot of more sabermetrics to be announced on this forum in the near future.
Again, these formulas will be available to paid members only which will be in circulation in the upcoming months. Stay tuned...