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 (Americas 2017) (ID: 1aez) (Sort: Lottery) (Playoffs: 1)
    Team: Argentina XV                                (ID: t1qz5) (FairPlay: 26)
    Team: Brazil                                      (ID: t1qz6) (FairPlay: 6)
    Team: Canada                                      (ID: t1qz7) (FairPlay: 13)
    Team: Chile                                       (ID: t1qz8) (FairPlay: 3)
    Team: United States                               (ID: t1qz9) (FairPlay: 24)
    Team: Uruguay                                     (ID: t1qza) (FairPlay: 10)
  Kind: pro
  Sport: rugby
  Gender: male
  Country: USA
  State: 
  Level: A
  Season: 2017 (current: True)
  Author: Johkey3
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Lottery: Points, Wins, GoalsDelta, FairPlay
SortEnd

RulesBegin
  PointsForWinInRegulation:  4
  PointsForWinInOvertime:  0
  PointsForWinInShootout:  0
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  2
  PercentOfGamesThatEndInTie:  0.04761904762
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5384615385
  WeightType:  PercentOfPointsWon
  WeightExponent:  0.458
  WhatDoYouCallATie:  draw
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  promoted
  Promote:  0
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
2/3/17    Brazil          17-3    Chile           (ID: g1t2su)
2/4/17    Canada          6-20    Argentina XV    (ID: g1t2sv)
2/4/17    United States   29-23   Uruguay         (ID: g1t2sw) (AwayBonus: 1)
2/11/17   Argentina XV    57-12   Uruguay         (ID: g1t2sx) (HomeBonus: 1)
2/11/17   Canada          36-15   Chile           (ID: g1t2sy) (HomeBonus: 1)
2/11/17   United States   51-3    Brazil          (ID: g1t2sz) (HomeBonus: 1)
2/18/17   Canada          34-51   United States   (ID: g1t2t0) (HomeBonus: 1) (AwayBonus: 1)
2/18/17   Chile           10-45   Argentina XV    (ID: g1t2t1) (AwayBonus: 1)
2/18/17   Uruguay         23-12   Brazil          (ID: g1t2t2) (HomeBonus: 1)
2/25/17   Argentina XV    79-7    Brazil          (ID: g1t2t4) (HomeBonus: 1)
2/25/17   Chile           9-57    United States   (ID: g1t2t3) (AwayBonus: 1)
2/25/17   Uruguay         17-13   Canada          (ID: g1t2t5) (AwayBonus: 1)
3/3/17    Brazil          24-23   Canada          (ID: g1t2t6) (AwayBonus: 1)
3/4/17    Argentina XV            United States   (ID: g1t2t7)
3/4/17    Uruguay                 Chile           (ID: g1t2t8)
GamesEnd