For any CSFBL comparison tool to mean anything, we need to curate which leagues are included with very clear definitions of how a league qualifies for inclusion. We have a number of ways to compare leagues, and we have a pretty good idea of what the parameters are of an active and competitive league.
We created a designation called "Top Tier" Leagues, applying the following qualifiers to determine the list:
To qualify as Top Tier, a league must meet either of the following criteria:
1) 20+ "rabid" owners (a rabid owner is defined as a CSFBLer with 30+ log-ins in the past 30 days)
2) For the rest, include any league that meets ALL 4 of the following criteria:
Qualification is based on current league status, so leagues can gain and lose their Top Tier status. In other words, whether a league's entire history is included in User Records or other comparison tools is determined by the league's current ability to meet Top Tier qualifications.
For a current list of all Top Tier leagues, go to the Find A League page and sort by Top Tier Leagues.