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 Cup  (ID: 1aez) (Sort: Lottery)
    Conference: Americas Rugby Cup  (ID: d13ni) (Sort: Conf) (Playoffs: 1)
      Team:     Argentina XV        (ID: t1kmu) (FairPlay: 24)
      Team:     Brazil              (ID: t1kmv) (FairPlay: 10)
      Team:     Canada              (ID: t1kmw) (FairPlay: 16)
      Team:     Chile               (ID: t1kmx) (FairPlay: 4)
      Team:     United States       (ID: t1kmy) (FairPlay: 21)
      Team:     Uruguay             (ID: t1kmz) (FairPlay: 12)
  Kind: pro
  Sport: rugby
  Gender: male
  Country: USA
  State: 
  Level: A
  Season: 2016 (current: True)
  Author: Johkey3
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Lottery: Points, GoalsDelta, FairPlay

Conf: Points, GoalsDelta, FairPlay
SortEnd

RulesBegin
  PointsForWinInRegulation:  4
  PointsForWinInOvertime:  0
  PointsForWinInShootout:  0
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  2
  PercentOfGamesThatEndInTie:  0.03333333333
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5539383562
  WeightType:  PercentOfPointsWon
  WeightExponent:  0.458
  WhatDoYouCallATie:  drawn
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  Championship
  Promote:  1
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
2/6/16    Canada          33-17   Uruguay         (ID: g1pzi3) (HomeBonus: 1)
2/6/16    Chile           25-22   Brazil          (ID: g1pzi4) (AwayBonus: 1)
2/6/16    United States   35-35   Argentina XV    (ID: g1pzi5) (HomeBonus: 1) (AwayBonus: 1)
2/12/16   Brazil          29-33   Uruguay         (ID: g1pzi6) (HomeBonus: 1) (AwayBonus: 1)
2/13/16   Argentina XV    52-15   Chile           (ID: g1pzi7) (HomeBonus: 1)
2/13/16   United States   30-22   Canada          (ID: g1pzi8) (HomeBonus: 1)
2/20/16   Canada          52-25   Brazil          (ID: g1pzi9) (HomeBonus: 1)
2/20/16   United States   64-0    Chile           (ID: g1pzia) (HomeBonus: 1)
2/20/16   Uruguay         21-24   Argentina XV    (ID: g1pzib) (HomeBonus: 1)
2/27/16   Brazil          24-23   United States   (ID: g1pzic) (AwayBonus: 1)
2/27/16   Chile           20-23   Uruguay         (ID: g1pzid) (HomeBonus: 1)
2/28/16   Argentina XV    54-21   Canada          (ID: g1pzie) (HomeBonus: 1)
3/5/16    Brazil                  Argentina XV    (ID: g1pzif)
3/5/16    Chile                   Canada          (ID: g1pzig)
3/5/16    Uruguay                 United States   (ID: g1pzih)
GamesEnd