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: TSSA State League U13G FALL17 (TSSA State Cham) (ID: 1a1mm) (Sort: League) (Playoffs: 2)
    Team: Chattanooga FC                                  (ID: t1sz6)
    Team: Knoxville FC                                    (ID: t1sz7)
    Team: Lobos                                           (ID: t1sz8)
    Team: Nashville FC                                    (ID: t1sz9)
    Team: TSC ECNL                                        (ID: t1sza)
    Team: TSC Showcase                                    (ID: t1szb)
  Kind: rec
  Sport: soccer
  Gender: male
  Country: USA
  State: Tennessee
  Level: A
  Season: Fall2017 (current: True)
  Author: Arrigo
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
League: Points, Average Points HeadToHead, Wins, Greatest Total GoalsDelta,

Least Total GoalsAgainst, Greatest Total GoalsFor, DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  3
  PointsForWinInOvertime:  3
  PointsForWinInShootout:  3
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  1
  PercentOfGamesThatEndInTie:  0.3
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5
  WeightType:  PercentOfPointsWon
  WeightExponent:  0
  WhatDoYouCallATie:  draw
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  Southern Regional Premier League
  Promote:  0
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
8/27/17    TSC ECNL         3-0   TSC Showcase     (ID: g1uq26)
9/9/17     Knoxville FC     3-0   TSC Showcase     (ID: g1uq27)
9/9/17     Nashville FC     3-2   Chattanooga FC   (ID: g1uq28)
9/10/17    Knoxville FC     3-1   Nashville FC     (ID: g1uq29)
9/10/17    TSC Showcase     3-2   Chattanooga FC   (ID: g1uq2a)
9/17/17    Chattanooga FC   2-2   Knoxville FC     (ID: g1uq2b)
9/23/17    Lobos            3-3   TSC ECNL         (ID: g1uq2c)
9/23/17    TSC ECNL         6-0   Knoxville FC     (ID: g1uq2d)
9/23/17    TSC Showcase     1-1   Nashville FC     (ID: g1uq2e)
9/24/17    Lobos            2-1   Knoxville FC     (ID: g1uq2f)
9/30/17    Nashville FC     0-5   Lobos            (ID: g1uq2g)
10/21/17   Chattanooga FC   0-3   TSC ECNL         (ID: g1uq2h)
10/28/17   TSC Showcase           Lobos            (ID: g1uq2i)
10/29/17   Chattanooga FC   5-0   Lobos            (ID: g1uq2j)
10/29/17   Nashville FC           TSC ECNL         (ID: g1uq2k)
GamesEnd