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: Reggie's Rough Riders (RRR)     (ID: 1a1wc) (Sort: League) (Playoffs: 5)
    Team: Ethan                           (ID: t1wvi)
    Team: DinoGrigio            (Ian)     (ID: t1wvj)
    Team: King K Rab            (Joe)     (ID: t1wvk)
    Team: J. J. Slime           (Kiel)    (ID: t110fd)
    Team: LukeDukem25           (Luke)    (ID: t110fe)
    Team: PunyParker            (Michael) (ID: t1wvn)
    Team: vampirestrike         (Miles)   (ID: t1wvp)
    Team: SamTung               (Sam)     (ID: t1zif)
    Team: CHS                   (Zakk)    (ID: t1wvr)
  Kind: rec
  Sport: super smash bros. ultimate
  Gender: coed
  Country: USA
  State: 
  Level: A
  Season: 2021 (current: True)
  Author: Michael Edwards
  Note: The third round-robin tournament of Reggie's Rough Riders
  LotteryNote: 
LeagueEnd

SortBegin
League:

Wins, GoalsDelta
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
2/5/21     Miles     12-7    Luke      (ID: g111mjm)
2/7/21     Ethan     15-10   Kiel      (ID: g111mjn)
2/7/21     Ethan     12-7    Luke      (ID: g111mjp)
2/7/21     Sam       12-5    Michael   (ID: g111mjq)
2/7/21     Zakk      17-14   Miles     (ID: g111mjr)
2/8/21     Joe       18-16   Ian       (ID: g111mjs)
2/9/21     Ian       14-10   Michael   (ID: g111mjy)
2/9/21     Joe       12-7    Michael   (ID: g111mjt)
2/11/21    Zakk      12-8    Ethan     (ID: g111mju)
2/12/21    Joe       12-4    Kiel      (ID: g111mjw)
2/12/21    Sam       12-3    Kiel      (ID: g111mjv)
2/12/21    Sam       15-11   Luke      (ID: g111mjx)
2/15/21    Miles     14-12   Ethan     (ID: g111mjz)
2/20/21    Joe       14-10   Luke      (ID: g111mk1)
2/25/21    Zakk      12-7    Sam       (ID: g111mk2)
3/1/21     Zakk      17-14   Joe       (ID: g111mk3)
3/1/21     Miles     9-14    Sam       (ID: g111mk6)
3/2/21     Ian       14-10   Kiel      (ID: g111mk0)
3/2/21     Michael   14-17   Kiel      (ID: g111mk4)
3/8/21     Miles     14-10   Joe       (ID: g111mk8)
3/8/21     Ethan     12-15   Sam       (ID: g111mka)
3/9/21     Ethan     5-12    Joe       (ID: g111mkc)
3/11/21    Ian       16-18   Luke      (ID: g111mk5)
3/11/21    Michael   6-12    Luke      (ID: g111mk9)
3/12/21    Zakk      15-10   Ian       (ID: g111mk7)
3/16/21    Miles     15-9    Ian       (ID: g111mkb)
3/16/21    Joe       18-17   Sam       (ID: g111mki)
3/20/21    Zakk      12-6    Michael   (ID: g111mke)
3/25/21    Kiel      10-15   Luke      (ID: g111mkd)
3/28/21    Miles     15-10   Michael   (ID: g111mkh)
4/7/21     Ethan     13-17   Ian       (ID: g111mkf)
4/15/21    Sam       12-6    Ian       (ID: g111mkj)
4/15/21    Ethan     12-3    Michael   (ID: g111mkn)
5/1/21     Miles     15-10   Kiel      (ID: g111mkk)
5/1/21     Zakk      12-6    Kiel      (ID: g111mkg)
5/1/21     Zakk      15-8    Luke      (ID: g111mkm)
5/4/21     Ethan     15-10   Kiel      (ID: g111mkq)
5/6/21     Miles     15-12   Luke      (ID: g111mkr)
5/8/21     Joe       12-7    Ian       (ID: g111mkp)
5/8/21     Sam       18-14   Michael   (ID: g111mks)
5/25/21    Zakk      18-15   Miles     (ID: g111mkw)
5/30/21    Joe       14-11   Michael   (ID: g111mkv)
6/6/21     Ethan     12-5    Luke      (ID: g111mku)
6/9/21     Joe       12-7    Kiel      (ID: g111mky)
6/9/21     Sam       12-4    Kiel      (ID: g111mkt)
6/11/21    Ian       12-14   Michael   (ID: g111mm0)
7/8/21     Zakk      14-12   Ethan     (ID: g111mkx)
7/8/21     Joe       15-13   Luke      (ID: g111mm3)
7/8/21     Sam       12-6    Luke      (ID: g111mkz)
7/28/21    Miles     18-12   Ethan     (ID: g111mm1)
8/21/21    Zakk      15-10   Sam       (ID: g111mm4)
9/5/21     Zakk      17-16   Joe       (ID: g111mm5)
9/5/21     Miles     15-11   Sam       (ID: g111mm8)
9/19/21    Ethan     17-15   Joe       (ID: g111mme)
9/19/21    Miles     13-10   Joe       (ID: g111mma)
9/19/21    Ethan     13-17   Sam       (ID: g111mmc)
9/20/21    Sam       12-9    Joe       (ID: g111mmi)
9/21/21    Ian       18-16   Kiel      (ID: g111mm2)
9/21/21    Ian       9-12    Luke      (ID: g111mm7)
10/5/21    Michael   18-14   Kiel      (ID: g111mm6)
10/5/21    Michael   6-12    Luke      (ID: g111mmb)
10/24/21   Miles     18-11   Ian       (ID: g111mmd)
10/24/21   Zakk      12-4    Ian       (ID: g111mm9)
11/7/21    Ethan     12-5    Ian       (ID: g111mmh)
11/9/21    Kiel      8-12    Luke      (ID: g111mmf)
11/23/21   Sam       12-5    Ian       (ID: g111mmm)
11/28/21   Zakk      12-7    Michael   (ID: g111mmg)
11/29/21   Ethan     15-11   Michael   (ID: g111mmq)
11/29/21   Miles     14-12   Michael   (ID: g111mmk)
12/5/21    Zakk              Kiel      (ID: g111mmj)
12/12/21   Miles             Kiel      (ID: g111mmn)
12/12/21   Zakk              Luke      (ID: g111mmp)
GamesEnd