Re-rank System
Like many other leagues, the Ontario Basketball League (OBL) strives to keep games as close, and as competitive as possible. In previous years, we’ve adopted a re-rank system, where teams who have been in pools that don’t match their skill level, are allocated to different pools, in order to play more competitive basketball. This year, we will be taking that a step further by adopting the basis point (BP) method – which will not only provide transparency to clubs, but ultimately aid in making more objective decisions.
To calculate a team’s basis points – we will be taking one metric into account; win and loss margins.
1,000 basis points will be allocated in total to each game based on the following
- 1-9 point win = 600 points
- 10-19 point win = 700 points
- 20+ point win = 800 points
- 1-9 point loss = 400 points
- 10-19 point loss = 300 points
- 20+ point loss = 200 points
- Forfeit = score will be recorded as (2-0) for the favoured team
Take a look at the example pool below.
After 3 weeks of basketball, right before the re-rank, the standings are as follows.
Now, using the results from each game, we can complete the basis point (BP) calculation.
Looking at the first game of weekend 1 – Club C beat Team B by 10 points, meaning Club C would be awarded 700 basis points, and Club B would be awarded 300.
After completing this for each matchup – the calculations are as follows.
From here, we would average the pool’s total basis points, as well as find the standard deviation, to determine if there are any outliers. (Note: Outlier cutoffs are found by adding/subtracting one unit of standard deviation to the pool average.)
Looking at this, we can objectively tell that Team B is an outlier, and to have more competitive weekends in the future – it would be best to reassign them to a lower pool.
Notice that while Team F is also an outlier, it is unlikely that they will be reassigned to a higher pool due to their number of losses. (More than one loss shows competition within the pool.)
