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:     Broken Bat League IV.5     (League IV.5)        (ID: 1a1ug) (Sort: League) (Playoffs: 2)
    Division: East                                            (ID: d15bn) (Sort: Div) (Playoffs: 1)
      Team:   Ames Cubs                  (Ames)               (ID: t1vt4)
      Team:   Augusta Trojans            (Augusta)            (ID: t1vt5)
      Team:   Champaign Aztecs           (Champaign)          (ID: t1vt6)
      Team:   Lansing Lumberjacks        (Lansing)            (ID: t1vta)
      Team:   Livonia Lions              (Livonia)            (ID: t1vtb)
      Team:   Syracuse Yankees           (Syracuse)           (ID: t1vte)
    Division: West                                            (ID: d15bp) (Sort: Div) (Playoffs: 1)
      Team:   Costa Mesa Braves          (Costa Mesa)         (ID: t1vt7)
      Team:   Dayton Hawks               (Dayton)             (ID: t1vt8)
      Team:   Kapaa Bulls                (Kapaa)              (ID: t1vt9)
      Team:   Loveland Tigers            (Loveland)           (ID: t1vtc)
      Team:   Rancho Palos Verdes Cobras (Ranch Palos Verdes) (ID: t1vtd)
      Team:   Waco Phoenix               (Waco)               (ID: t1vtf)
  Kind: fantasy
  Sport: baseball
  Gender: male
  Country: USA
  State: 
  Level: IV.5
  Season: 2037 (current: True)
  Author: cqk328
  Note: Will update after every advance.
  LotteryNote: 
LeagueEnd

SortBegin
Div:
Points,
IfSomeTiesBrokenReturnHereIf2,
GoalsDelta,
DrawLots

League:
MoveClinchedtoFront,
Points,
GoalsDelta,
DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  1
  PointsForWinInOvertime:  1
  PointsForWinInShootout:  1
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  0.5
  PercentOfGamesThatEndInTie:  0
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.56
  WeightType:  Pythagenpat
  WeightExponent:  0.27
  WhatDoYouCallATie:  tie
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  promoted
  Promote:  0
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: away
3/27/37   Lansing   6-2   Champaign   (ID: g1xs0r)
GamesEnd