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:       National Basketball League  (NBA)             (ID: 1a1hr) (Sort: Lottery)
    Conference: /beisbol/                                     (ID: d14bn) (Sort: Conf) (Playoffs: 4)
      Division: #ExposNation                                  (ID: d14bp) (Sort: Div) (Playoffs: 1)
        Team:   1% Home Run chance          (1HR)             (ID: t1r03)
        Team:   Carolina Dinger Swingers    (CDS)             (ID: t1r06)
        Team:   Commonwealth Silver Shroud  (CSS)             (ID: t1r07)
      Division: Delete The Nationals        (Delete The Nati) (ID: d14bq) (Sort: Div) (Playoffs: 1)
        Team:   Bryce Harper Isnt Elite     (BH)              (ID: t1r05)
        Team:   And Here Comes The Pizza    (HCP)             (ID: t1r08)
        Team:   Miami Hotline               (MH)              (ID: t1r0a)
      Division: God Hates Nats                                (ID: d14br) (Sort: Div) (Playoffs: 1)
        Team:   The Butt City Benises :DDDD (BCB)             (ID: t1r04)
        Team:   The Meme Free Zone          (MFZ)             (ID: t1r09)
        Team:   Team BO-Lieve               (TBL)             (ID: t1r0b)
  Kind: fantasy
  Sport: baseball
  Gender: male
  Country: USA
  State: 
  Level: A
  Season: 2017 (current: True)
  Author: T. Winky
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Div:
IfSomeTiesBrokenReturnHere,
Points,Points HeadToHead,
Points SameParent,
DrawLots

Conf:
MoveClinchedToFront,
Points,
Points HeadToHead,
DrawLots

Lottery:
MoveClinchedToFrontBySeed,
Points,Points HeadToHead,
Points SameParent,
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:  0.5
  WeightType:  Pythagorean
  WeightExponent:  14
  WhatDoYouCallATie:  tie
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  promoted
  Promote:  0
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: away
4/9/17   CSS      BH    (ID: g1t2yu)
4/9/17   CSS      BH    (ID: g1t2yv)
4/9/17   CSS      BH    (ID: g1t2yw)
4/9/17   CSS      BH    (ID: g1t2yx)
4/9/17   CSS      BH    (ID: g1t2yy)
4/9/17   CSS      BH    (ID: g1t2yz)
4/9/17   CSS      BH    (ID: g1t2z0)
4/9/17   CSS      BH    (ID: g1t2z1)
4/9/17   CSS      BH    (ID: g1t2z2)
4/9/17   CSS      BH    (ID: g1t2z3)
4/9/17   CDS      HCP   (ID: g1t2z4)
4/9/17   CDS      HCP   (ID: g1t2z5)
4/9/17   CDS      HCP   (ID: g1t2z6)
4/9/17   CDS      HCP   (ID: g1t2z7)
4/9/17   CDS      HCP   (ID: g1t2z8)
4/9/17   CDS      HCP   (ID: g1t2z9)
4/9/17   CDS      HCP   (ID: g1t2za)
4/9/17   CDS      HCP   (ID: g1t2zb)
4/9/17   CDS      HCP   (ID: g1t2zc)
4/9/17   CDS      HCP   (ID: g1t2zd)
4/9/17   BCB      MH    (ID: g1t2ze)
4/9/17   BCB      MH    (ID: g1t2zf)
4/9/17   BCB      MH    (ID: g1t2zg)
4/9/17   BCB      MH    (ID: g1t2zh)
4/9/17   BCB      MH    (ID: g1t2zi)
4/9/17   BCB      MH    (ID: g1t2zj)
4/9/17   BCB      MH    (ID: g1t2zk)
4/9/17   BCB      MH    (ID: g1t2zm)
4/9/17   BCB      MH    (ID: g1t2zn)
4/9/17   BCB      MH    (ID: g1t2zp)
4/9/17   MFZ      TBL   (ID: g1t2zq)
4/9/17   MFZ      TBL   (ID: g1t2zr)
4/9/17   MFZ      TBL   (ID: g1t2zs)
4/9/17   MFZ      TBL   (ID: g1t2zt)
4/9/17   MFZ      TBL   (ID: g1t2zu)
4/9/17   MFZ      TBL   (ID: g1t2zv)
4/9/17   MFZ      TBL   (ID: g1t2zw)
4/9/17   MFZ      TBL   (ID: g1t2zx)
4/9/17   MFZ      TBL   (ID: g1t2zy)
4/9/17   MFZ      TBL   (ID: g1t2zz)
GamesEnd