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: OWVAA Sector 1 Playoffs (OWVAA Sector 1)  (ID: 1a1xx) (Sort: League) (Playoffs: 4)
    Team: The Alexyoshis          (Alexyoshis)      (ID: t1xji)
    Team: Ascendancy                                (ID: t1xjj)
    Team: Astral                                    (ID: t1xjk)
    Team: Chivalrous                                (ID: t1xjm)
    Team: Cosmic                                    (ID: t1xjn)
    Team: ExPandable Bamboozler   (ExPandable Bamb) (ID: t1xjp)
    Team: Frantic LavaCats                          (ID: t1xjq)
    Team: The Golden Boys         (Golden Boys)     (ID: t1xjz)
    Team: Lijiang Legion                            (ID: t1xjr)
    Team: Nano Me! Academy                          (ID: t1xjs)
    Team: No Potential                              (ID: t1xjt)
    Team: One Last Ride                             (ID: t1xju)
    Team: RGT                                       (ID: t1xjw)
    Team: Safe Haven                                (ID: t1xjx)
    Team: Storm eSports                             (ID: t1xjy)
    Team: Team Rage                                 (ID: t1xjv)
  Kind: rec
  Sport: overwatch
  Gender: coed
  Country: USA
  State: 
  Level: T4
  Season: 2019 (current: True)
  Author: Alexyoshi
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
League: Points, GoalsDelta, Average Points HeadToHead, Playoff, DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  1
  PointsForWinInOvertime:  1
  PointsForWinInShootout:  1
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  0.5
  PercentOfGamesThatEndInTie:  0
  PercentOfGamesThatEndInOvertimeWin:  0.2
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5
  WeightType:  Pythagenpat
  WeightExponent:  0.208
  WhatDoYouCallATie:  draw
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  Bye
  Promote:  2
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
7/21/19   7:00 PM   Astral             2-1        One Last Ride      (ID: g1zfn3)
7/21/19   7:00 PM   ExPandable Bamb    2-3 (ot)   Lijiang Legion     (ID: g1zfn4)
7/21/19   7:00 PM   Frantic LavaCats   4-0        Safe Haven         (ID: g1zfn5)
7/21/19   7:00 PM   Golden Boys        4-0        Team Rage          (ID: g1zfna)
7/21/19   7:00 PM   Nano Me! Academy   3-1        Alexyoshis         (ID: g1zfn6)
7/21/19   7:00 PM   No Potential       4-0        Chivalrous         (ID: g1zfn7)
7/21/19   7:00 PM   RGT                0-4        Ascendancy         (ID: g1zfn8)
7/21/19   7:00 PM   Storm eSports      0-4        Cosmic             (ID: g1zfn9)
7/28/19   7:00 PM   Alexyoshis         3-1        No Potential       (ID: g1zfnb)
7/28/19   7:00 PM   Ascendancy         4-0        ExPandable Bamb    (ID: g1zfnc)
7/28/19   7:00 PM   Chivalrous         0-4        Cosmic             (ID: g1zfnd)
7/28/19   7:00 PM   Frantic LavaCats   4-0        RGT                (ID: g1zfne)
7/28/19   7:00 PM   Lijiang Legion     0-4        Astral             (ID: g1zfnf)
7/28/19   7:00 PM   One Last Ride      1-3        Nano Me! Academy   (ID: g1zfng)
7/28/19   7:00 PM   Safe Haven         0-3        Golden Boys        (ID: g1zfni)
7/28/19   7:00 PM   Team Rage          4-0        Storm eSports      (ID: g1zfnh)
8/3/19    7:00 PM   Alexyoshis         0-4        One Last Ride      (ID: g1zfnj)
8/3/19    7:00 PM   Astral             4-0        Ascendancy         (ID: g1zfnk)
8/3/19    7:00 PM   Chivalrous         0-4        Team Rage          (ID: g1zfnm)
8/3/19    7:00 PM   Cosmic             0-4        No Potential       (ID: g1zfnn)
8/3/19    7:00 PM   ExPandable Bamb    0-4        Frantic LavaCats   (ID: g1zfnp)
8/3/19    7:00 PM   Golden Boys        4-0        RGT                (ID: g1zfns)
8/3/19    7:00 PM   Nano Me! Academy   4-0        Lijiang Legion     (ID: g1zfnq)
8/3/19    7:00 PM   Storm eSports      4-0        Safe Haven         (ID: g1zfnr)
8/10/19   7:00 PM   Ascendancy         3-1        Nano Me! Academy   (ID: g1zfnt)
8/10/19   7:00 PM   Cosmic             0-4        Team Rage          (ID: g1zfnu)
8/10/19   7:00 PM   Frantic LavaCats   3-2        Astral             (ID: g1zfnw)
8/10/19   7:00 PM   No Potential       4-0        One Last Ride      (ID: g1zfny)
8/10/19   7:00 PM   Safe Haven         0-4        Chivalrous         (ID: g1zfp0)
8/13/19   7:00 PM   RGT                4-0        Storm eSports      (ID: g1zfnz)
8/13/19   9:00 PM   Lijiang Legion     1-3        Alexyoshis         (ID: g1zfnx)
8/14/19   7:00 PM   ExPandable Bamb    0-4        Golden Boys        (ID: g1zfnv)
8/17/19   7:00 PM   Ascendancy         4-0        Alexyoshis         (ID: g1zfp1)
8/17/19   7:00 PM   Astral             4-0        Golden Boys        (ID: g1zfp2)
8/17/19   7:00 PM   Chivalrous         0-4        RGT                (ID: g1zfp3)
8/17/19   7:00 PM   Cosmic             4-0        Safe Haven         (ID: g1zfp4)
8/17/19   7:00 PM   Nano Me! Academy   3-1        Frantic LavaCats   (ID: g1zfp5)
8/17/19   7:00 PM   One Last Ride      0-4        Lijiang Legion     (ID: g1zfp6)
8/17/19   7:00 PM   Storm eSports      0-4        ExPandable Bamb    (ID: g1zfp8)
8/17/19   7:00 PM   Team Rage          0-4        No Potential       (ID: g1zfp9)
GamesEnd