You can add leagues, big or small, to Sports Club Stats.
   It's free.
   It's easy.
   Just email import@sportsclubstats.com the:
      structure
      schedule
      and rules
   In a few minutes you'll get back a link to the league.
   Play around, have fun, you won't break anything.
   I look forward to seeing what you create.

Info about the various settings:
   https://docs.google.com/document/d/1-UneDNk6tkOrc_B-WBnGnc5KGiy2kttXC2fW8dR7QzM/edit?hl=en

For example, here is what created this league:

LeagueBegin
  League: Americas Rugby Championship (ARC) (ID: 1abj) (Sort: League) (Playoffs: 1)
    Team: Argentina                         (ID: t15wi)
    Team: Brazil                            (ID: t1kka)
    Team: Canada                            (ID: t15wj)
    Team: Chile                             (ID: t1kkb)
    Team: Uruguay                           (ID: t15wk)
    Team: USA                               (ID: t15wm)
  Kind: pro
  Sport: rugby
  Gender: male
  Country: North America
  State: 
  Level: AA
  Season: 2016 (current: True)
  Author: Matt Grande
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
League:
  Points,
  If [(Size=2) Points HeadToHead],
  GoalsDelta,
  GoalsFor,
  DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  4
  PointsForWinInOvertime:  4
  PointsForWinInShootout:  4
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  2
  PercentOfGamesThatEndInTie:  0.05
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5
  WeightType:  PercentOfPointsWon
  WeightExponent:  0.458
  WhatDoYouCallATie:  draw
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  Promoted
  Promote:  0
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  Wooden Spoon
  Demote:  1
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
2/6/16    Canada      33-17   Uruguay     (ID: g1pu3t) (HomeBonus: 1)
2/6/16    Chile       25-22   Brazil      (ID: g1pu3u) (AwayBonus: 1)
2/6/16    USA         35-35   Argentina   (ID: g1pu3v) (HomeBonus: 1) (AwayBonus: 1)
2/12/16   Brazil      29-33   Uruguay     (ID: g1pu3w) (HomeBonus: 1) (AwayBonus: 1)
2/13/16   Argentina   52-15   Chile       (ID: g1pu3x) (HomeBonus: 1)
2/13/16   USA         30-22   Canada      (ID: g1pu3y) (HomeBonus: 1)
2/20/16   Canada      52-25   Brazil      (ID: g1pu3z) (HomeBonus: 1)
2/20/16   Uruguay     21-24   Argentina   (ID: g1pu40) (HomeBonus: 1)
2/20/16   USA         64-0    Chile       (ID: g1pu41) (HomeBonus: 1)
2/27/16   Brazil      24-23   USA         (ID: g1pu42) (AwayBonus: 1)
2/27/16   Chile       20-23   Uruguay     (ID: g1pu43) (HomeBonus: 1)
2/28/16   Argentina   54-21   Canada      (ID: g1pu44) (HomeBonus: 1)
3/5/16    Brazil              Argentina   (ID: g1pu45)
3/5/16    Chile               Canada      (ID: g1pu46)
3/5/16    Uruguay             USA         (ID: g1pu47)
GamesEnd