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: DPC SEA Upper Div        (ID: 1a23t) (Sort: Conf) (Playoffs: 3)
    Team: 496 Gaming        (496)  (ID: t110iz)
    Team: BOOM Esports      (BOOM) (ID: t110j0)
    Team: Fnatic                   (ID: t110j1)
    Team: Neon Esports      (Neon) (ID: t110j2)
    Team: T1                       (ID: t110j3)
    Team: TNC Predator      (TNC)  (ID: t110j4)
    Team: Vice Esports      (Vice) (ID: t110j5)
    Team: Execration        (XctN) (ID: t110j6)
  Kind: pro
  Sport: dota
  Gender: coed
  Country: SEA
  State: 
  Level: A
  Season: 2021Season1 (current: True)
  Author: Poddo
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Conf: Seed [(1-8) Call Standard]
Standard: Points, Points HeadToHead, (side) DrawLots
Bubble: Points, (side) DrawLots, Playoff
SortEnd

RulesBegin
  PointsForWinInRegulation:  1
  PointsForWinInOvertime:  1
  PointsForWinInShootout:  1
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  1
  PercentOfGamesThatEndInTie:  0
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5
  WeightType:  PercentOfPointsWon
  WeightExponent:  0
  WhatDoYouCallATie:  tie
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  Major Playoff
  Promote:  1
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  demoted
  Demote:  2
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
1/20/21   BOOM     0-2   Neon     (ID: g111n04)
1/20/21   Fnatic   2-0   T1       (ID: g111n05)
1/21/21   496      2-0   Vice     (ID: g111n06)
1/23/21   Neon     2-1   496      (ID: g111n07)
1/23/21   TNC      0-2   XctN     (ID: g111n08)
1/27/21   Vice     0-2   TNC      (ID: g111n09)
1/27/21   XctN     0-2   Fnatic   (ID: g111n0a)
1/28/21   496      1-2   BOOM     (ID: g111n0b)
1/30/21   496      1-2   T1       (ID: g111n0c)
1/30/21   TNC      1-2   Neon     (ID: g111n0d)
2/3/21    Fnatic   1-2   BOOM     (ID: g111n0e)
2/3/21    XctN     1-2   Vice     (ID: g111n0f)
2/4/21    BOOM     1-2   T1       (ID: g111n0g)
2/6/21    Neon     2-1   XctN     (ID: g111n0h)
2/6/21    T1       1-2   TNC      (ID: g111n0i)
2/10/21   TNC      2-0   BOOM     (ID: g111n0j)
2/10/21   Vice     0-2   Fnatic   (ID: g111n0k)
2/11/21   Vice     0-2   Neon     (ID: g111n0m)
2/13/21   Fnatic   2-0   496      (ID: g111n0n)
2/13/21   XctN     0-2   T1       (ID: g111n0p)
2/17/21   BOOM     2-0   XctN     (ID: g111n0q)
2/17/21   T1       2-0   Vice     (ID: g111n0r)
2/18/21   Neon     1-2   Fnatic   (ID: g111n0s)
2/20/21   496      0-2   TNC      (ID: g111n0t)
2/20/21   Vice     0-2   BOOM     (ID: g111n0u)
2/24/21   Fnatic         TNC      (ID: g111n0v)
2/24/21   XctN           496      (ID: g111n0w)
2/25/21   Neon           T1       (ID: g111n0x)
GamesEnd