97 coaches online • Server time: 21:03
Help Support Bugs Staff FUMBBL Rules
Log in
Recent Forum Topics goto Post Windows 10 and the C...goto Post Human League Premier...goto Post SWL Season LXX

Rankings Explained

Summary

Ranking is a mathematically calculated measure of winning ability, and applies to both the coach and the team. A coach or team with a ranking of over 150 is better than average at achieving results that are better than expected, given the strength of his own team and his opponents' teams. A coach or team ranked lower than 150 likewise achieves results that are worse than predicted. Opponent coach rankings are also considered, so drawing against a higher-ranked opponent with equal strength teams will improve the lower-ranked coach's ranking, and degrade the ranking of the higher-ranked coach.

The Mathematics of Rankings

First off, we define a couple of variables:

  • Ro = Ranking before match
  • Rn = Ranking after match
  • K = A division specific "weight" value
  • S = Result of game. For a win S = 1.0, for a tie S = 0.5 and for a loss S = 0.0
  • p = Win probability
  • dR = Difference in ranking (Opponents ranking minus your Ro)
  • dT = Normalized difference in team strength ( 100 * [s1/min(s1,s2) - s2/min(s1,s2)] )
  • r = A racial modifier by TS

Each team starts with a ranking of 150.0 and after each game, the new Ranking is calculated as follows:

There has been a CR tweak, meaning that p in the first formula is replace by P. This new P is calculated using the old p, as follows:

P = p ^ ( 5 ^ ( 1 - 2*r ) )

Minimum number of matches

As of March 4, 2007, both teams playing a match need to have played at least 4 matches for it to be used for ranking purposes.

Rank titles

Curious how CR relates to Rank titles?

Last update: August 23, 2017