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: Old Guard Shield                         (ID: 1a1iy) (Sort: Div) (Playoffs: 1)
    Team: Charleston OGS Battery     (Battery)     (ID: t1r8r)
    Team: Richmond OGS Kickers       (Kickers)     (ID: t1r8t)
    Team: Penn OGS FC                (Penn FC)     (ID: t1r8s)
    Team: Pittsburgh OGS Riverhounds (Riverhounds) (ID: t1r8v)
  Kind: pro
  Sport: soccer
  Gender: male
  Country: OldGuard
  State: 
  Level: S
  Season: 2018 (current: True)
  Author: Rob Hoffmann
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Div: Points, Total Wins, GoalsDelta, GoalsFor, FairPlay, DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  3
  PointsForWinInOvertime:  3
  PointsForWinInShootout:  3
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  1
  PercentOfGamesThatEndInTie:  0.2446
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.6087
  WeightType:  PercentOfPointsWon
  WeightExponent:  0
  WhatDoYouCallATie:  draw
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  Champion
  Promote:  0
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
3/24/18   Battery       1-0   Penn FC       (ID: g1w2hw)
4/21/18   Penn FC       1-1   Battery       (ID: g1w2hx)
5/26/18   Riverhounds   0-0   Penn FC       (ID: g1w2hz)
6/2/18    Kickers       1-2   Riverhounds   (ID: g1w2i4)
6/9/18    Kickers       2-0   Battery       (ID: g1w2i5)
6/23/18   Battery       0-0   Riverhounds   (ID: g1w2i0)
7/9/18    Penn FC       1-2   Kickers       (ID: g1w2i6)
7/21/18   Riverhounds   0-1   Battery       (ID: g1w2i1)
7/28/18   Battery       3-0   Kickers       (ID: g1w2i7)
8/1/18    Riverhounds   3-0   Kickers       (ID: g1w2i8)
8/18/18   Kickers       3-2   Penn FC       (ID: g1w2i9)
9/26/18   Penn FC       0-2   Riverhounds   (ID: g1w2i3)
GamesEnd