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:       Taca Rio                                          (ID: 1a1rh) (Sort: Conf)
    Conference: Grupo B                                           (ID: d13p0) (Sort: Div) (Playoffs: 2)
      Team:     Bangu Atletico Clube              (Bangu)         (ID: t16dq)
      Team:     Associacao Desportiva Cabofriense (Cabofriense)   (ID: t16zc)
      Team:     Clube de Regatas do Flamengo      (Flamengo)      (ID: t11hk)
      Team:     Nova Iguacu Futebol Clube         (Nova Iguacu)   (ID: t16dz)
      Team:     Club de Regatas Vasco da Gama     (Vasco da Gama) (ID: t11i2)
      Team:     Volta Redonda Futebol Clube       (Volta Redonda) (ID: t16e4)
    Conference: Grupo C                                           (ID: d13p1) (Sort: Div) (Playoffs: 2)
      Team:     Boavista Sport Club               (Boavista)      (ID: t16dr)
      Team:     Botafogo de Futebol e Regatas     (Botafogo)      (ID: t11hg)
      Team:     Fluminense Football Club          (Fluminense)    (ID: t11hm)
      Team:     Macae Esporte Futebol Clube       (Macae)         (ID: t16p0)
      Team:     Madureira Esporte Clube           (Madureira)     (ID: t16dy)
      Team:     Associacao Atletica Portuguesa    (Portuguesa)    (ID: t16dv)
  Kind: pro
  Sport: soccer
  Gender: male
  Country: Brazil
  State: Rio de Janeiro
  Level: B
  Season: 2018 (current: False)
  Author: Marcos Vilhena
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Div: Points, Wins, GoalsDelta, GoalsFor, Points HeadToHead, DrawLots
Conf: MoveClinchedToFrontBySeed, Points, Wins, GoalsDelta, GoalsFor, Points
HeadToHead, DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  3
  PointsForWinInOvertime:  3
  PointsForWinInShootout:  3
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  1
  PercentOfGamesThatEndInTie:  0.24
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.52
  WeightType:  Pythagorean
  WeightExponent:  1.4
  WhatDoYouCallATie:  draw
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  promoted
  Promote:  0
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
2/19/18   7:30 PM   Volta Redonda   0-2   Portuguesa      (ID: g1w097)
2/21/18   4:30 PM   Bangu           0-4   Fluminense      (ID: g1w092)
2/21/18   7:30 PM   Flamengo        4-0   Madureira       (ID: g1w094)
2/22/18   5:00 PM   Cabofriense     2-3   Boavista        (ID: g1w093)
2/22/18   7:30 PM   Nova Iguacu     1-2   Botafogo        (ID: g1w095)
2/24/18   4:30 PM   Macae           2-2   Bangu           (ID: g1w09b)
2/24/18   5:00 PM   Fluminense      4-0   Flamengo        (ID: g1w09a)
2/25/18   3:30 PM   Boavista        2-1   Nova Iguacu     (ID: g1w098)
2/25/18   5:00 PM   Portuguesa      1-0   Vasco da Gama   (ID: g1w09d)
2/25/18   7:30 PM   Botafogo        1-0   Cabofriense     (ID: g1w099)
2/26/18   3:45 PM   Madureira       0-0   Volta Redonda   (ID: g1w09c)
3/1/18    7:30 PM   Vasco da Gama   2-1   Macae           (ID: g1w096)
3/3/18    4:30 PM   Bangu           1-1   Portuguesa      (ID: g1w09e)
3/3/18    5:00 PM   Flamengo        1-0   Botafogo        (ID: g1w09g)
3/4/18    3:45 PM   Nova Iguacu     1-1   Madureira       (ID: g1w09i)
3/4/18    5:00 PM   Cabofriense     1-0   Macae           (ID: g1w09f)
3/4/18    5:00 PM   Fluminense      2-1   Volta Redonda   (ID: g1w09h)
3/4/18    7:30 PM   Vasco da Gama   4-3   Boavista        (ID: g1w09j)
3/6/18    9:30 PM   Botafogo        1-0   Bangu           (ID: g1w09m)
3/7/18    3:15 PM   Madureira       0-2   Cabofriense     (ID: g1w09p)
3/7/18    3:45 PM   Boavista        0-3   Flamengo        (ID: g1w09k)
3/7/18    4:00 PM   Macae           1-1   Volta Redonda   (ID: g1w09n)
3/7/18    4:00 PM   Portuguesa      2-1   Nova Iguacu     (ID: g1w09q)
3/7/18    7:30 PM   Vasco da Gama   0-0   Fluminense      (ID: g1w09r)
3/10/18   4:00 PM   Boavista        0-2   Bangu           (ID: g1w2e5)
3/10/18   7:30 PM   Macae           1-0   Flamengo        (ID: g1w2e6)
3/10/18   9:45 PM   Madureira       1-3   Vasco da Gama   (ID: g1w2e7)
3/11/18   3:45 PM   Portuguesa      1-2   Cabofriense     (ID: g1w09w)
3/11/18   5:00 PM   Volta Redonda   1-1   Botafogo        (ID: g1w2e8)
3/11/18   7:30 PM   Fluminense      2-1   Nova Iguacu     (ID: g1w09t)
3/17/18   6:00 PM   Bangu           0-3   Madureira       (ID: g1w2e9)
3/17/18   6:00 PM   Botafogo        2-3   Vasco da Gama   (ID: g1w2ea)
3/17/18   6:00 PM   Cabofriense     1-1   Fluminense      (ID: g1w2eb)
3/17/18   6:00 PM   Flamengo        4-0   Portuguesa      (ID: g1w0a1)
3/17/18   6:00 PM   Nova Iguacu     0-2   Macae           (ID: g1w0a2)
3/17/18   6:00 PM   Volta Redonda   2-3   Boavista        (ID: g1w2ec)
GamesEnd