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: Mouse Trap  (ID: 1a1q6) (Sort: League) (Playoffs: 8)
    Team: AK          (ID: t1trp)
    Team: AR          (ID: t1trq)
    Team: BB          (ID: t1trr)
    Team: BH          (ID: t1trs)
    Team: JB          (ID: t1trt)
    Team: MM          (ID: t1tru)
    Team: PK          (ID: t1trv)
    Team: RT          (ID: t1trw)
    Team: TC          (ID: t1trx)
    Team: TD          (ID: t1try)
    Team: TM          (ID: t1trz)
    Team: TS          (ID: t1ts0)
  Kind: fantasy
  Sport: football
  Gender: male
  Country: USA
  State: 
  Level: A
  Season: 2017 (current: True)
  Author: JB
  Note: Playoff statistics
  LotteryNote: 
LeagueEnd

SortBegin
League: Wins, points
SortEnd

RulesBegin
  PointsForWinInRegulation:  1
  PointsForWinInOvertime:  1
  PointsForWinInShootout:  1
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  0.5
  PercentOfGamesThatEndInTie:  0.004
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5
  WeightType:  Pythagenpat
  WeightExponent:  0.2
  WhatDoYouCallATie:  tie
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  promoted
  Promote:  0
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: away
9/10/17    TM   139.1-133.7   AK   (ID: g1vc6x)
9/10/17    PK   125.8-115.8   AR   (ID: g1vc6y)
9/10/17    MM   75.9-106.8    BB   (ID: g1vc6z)
9/10/17    RT   116.5-87      BH   (ID: g1vc70)
9/10/17    JB   103-115.1     TD   (ID: g1vc71)
9/10/17    TC   126.7-108.9   TS   (ID: g1vc72)
9/17/17    TS   74-137.2      BH   (ID: g1vc73)
9/17/17    PK   134.1-118.4   JB   (ID: g1vc74)
9/17/17    AR   100.4-119.7   MM   (ID: g1vc75)
9/17/17    BB   118-130.8     RT   (ID: g1vc76)
9/17/17    AK   102.8-140.2   TC   (ID: g1vc77)
9/17/17    TD   138-86        TM   (ID: g1vc78)
9/24/17    BH   125.8-161     AK   (ID: g1vc79)
9/24/17    RT   88.3-104      AR   (ID: g1vc7a)
9/24/17    TS   96.8-146.3    BB   (ID: g1vc7b)
9/24/17    MM   130.8-117.5   PK   (ID: g1vc7c)
9/24/17    TC   129.3-120.2   TD   (ID: g1vc7d)
9/24/17    JB   149-108.2     TM   (ID: g1vc7e)
10/1/17    AK   161.2-110.1   BB   (ID: g1vc7f)
10/1/17    TD   102.1-100.3   BH   (ID: g1vc7g)
10/1/17    MM   138.3-130.9   JB   (ID: g1vc7h)
10/1/17    PK   114.4-105.8   RT   (ID: g1vc7i)
10/1/17    TM   116.5-153.8   TC   (ID: g1vc7j)
10/1/17    AR   146.9-84.7    TS   (ID: g1vc7k)
10/8/17    AK   120.6-96.9    AR   (ID: g1vc7m)
10/8/17    RT   111.1-146.8   MM   (ID: g1vc7n)
10/8/17    TS   115.3-74.2    PK   (ID: g1vc7p)
10/8/17    JB   162.4-139.1   TC   (ID: g1vc7q)
10/8/17    BB   125.5-49.2    TD   (ID: g1vc7r)
10/8/17    BH   181.6-132.7   TM   (ID: g1vc7s)
10/15/17   PK   134.5-118.2   AK   (ID: g1vc7t)
10/15/17   TD   96.9-109.3    AR   (ID: g1vc7u)
10/15/17   TM   128.7-154.3   BB   (ID: g1vc7v)
10/15/17   TC   86.1-108.6    BH   (ID: g1vc7w)
10/15/17   RT   125.8-113.6   JB   (ID: g1vc7x)
10/15/17   MM   97.9-126      TS   (ID: g1vc7y)
10/22/17   JB   118.1-95.4    BH   (ID: g1vc7z)
10/22/17   AK   125.5-123.1   MM   (ID: g1vc80)
10/22/17   TD   125.6-78.7    PK   (ID: g1vc81)
10/22/17   TS   84.8-107.8    RT   (ID: g1vc82)
10/22/17   BB   160-133.4     TC   (ID: g1vc83)
10/22/17   AR   100.7-95.2    TM   (ID: g1vc84)
10/29/17   RT   110.4-125.9   AK   (ID: g1vc85)
10/29/17   TC   158.7-107.1   AR   (ID: g1vc86)
10/29/17   BH   101.9-128.8   BB   (ID: g1vc87)
10/29/17   TS   158.2-113.9   JB   (ID: g1vc88)
10/29/17   TM   162.7-78.2    PK   (ID: g1vc89)
10/29/17   MM   95.8-119.2    TD   (ID: g1vc8a)
11/5/17    JB   172.3-120.2   BB   (ID: g1vc8b)
11/5/17    AR   95.8-75.5     BH   (ID: g1vc8c)
11/5/17    TM   152-101.2     MM   (ID: g1vc8d)
11/5/17    TD   108.3-114.3   RT   (ID: g1vc8e)
11/5/17    PK   128.1-122.4   TC   (ID: g1vc8f)
11/5/17    AK   117.6-124.2   TS   (ID: g1vc8g)
11/12/17   BB   151.2-113.9   AR   (ID: g1vc8h)
11/12/17   AK   131.1-107.1   JB   (ID: g1vc8i)
11/12/17   TC   104.8-117.7   MM   (ID: g1vc8j)
11/12/17   BH   120.5-111.1   PK   (ID: g1vc8k)
11/12/17   TS   110.3-120.6   TD   (ID: g1vc8m)
11/12/17   RT   81.1-150.2    TM   (ID: g1vc8n)
11/19/17   TD   112.9-127.3   AK   (ID: g1vc8p)
11/19/17   JB   166.5-159.1   AR   (ID: g1vc8q)
11/19/17   PK   99.4-106.7    BB   (ID: g1vc8r)
11/19/17   MM   76.9-109.4    BH   (ID: g1vc8s)
11/19/17   TC   170-114.8     RT   (ID: g1vc8t)
11/19/17   TM   112-139.5     TS   (ID: g1vc8u)
11/26/17   TD   100.5-156.8   JB   (ID: g1vc8v)
11/26/17   BB   157.4-111.7   MM   (ID: g1vc8w)
11/26/17   AR   141.4-81.9    PK   (ID: g1vc8x)
11/26/17   BH   158.2-81.4    RT   (ID: g1vc8y)
11/26/17   TS   126.4-126.7   TC   (ID: g1vc8z)
11/26/17   AK   125.5-113.3   TM   (ID: g1vc90)
12/3/17    TC                 AK   (ID: g1vc91)
12/3/17    MM                 AR   (ID: g1vc92)
12/3/17    RT                 BB   (ID: g1vc93)
12/3/17    JB                 PK   (ID: g1vc94)
12/3/17    TM                 TD   (ID: g1vc95)
12/3/17    BH                 TS   (ID: g1vc96)
GamesEnd