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:     NLL                                 (ID: nll) (Sort: League) (Playoffs: 8)
    Division: East                                (ID: d1am) (Sort: Div) (Playoffs: 1)
      Team:   Buffalo Bandits       (Bandits)     (ID: t11dn)
      Team:   Rochester Knighthawks (Knighthawks) (ID: t11dq)
      Team:   Toronto Rock          (Rock)        (ID: t11ds)
      Team:   Philadelphia Wings    (Wings)       (ID: t11dy)
    Division: West                                (ID: d1an) (Sort: Div) (Playoffs: 1)
      Team:   Colorado Mammoth      (Mammoth)     (ID: t11dr)
      Team:   Calgary Roughnecks    (Roughnecks)  (ID: t11dt)
      Team:   Edmonton Rush         (Rush)        (ID: t11du)
      Team:   Washington Stealth    (Stealth)     (ID: t11dv)
      Team:   Minnesota Swarm       (Swarm)       (ID: t11dw)
  Kind: pro
  Sport: lacrosse
  Gender: male
  Country: USA
  State: 
  Level: A
  Season: 2013 (current: False)
  Author: statmanrob
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Div:

    Average Points,

    Average Points HeadToHead,

    Average Points SameParent,

    Average Points CommonOpponentEqual,

    Average GoalsDelta HeadToHead,

    Average GoalsDelta SameParent,

    Average GoalsDelta,

    DrawLots

 

League:

    Average Points,

    Average Points HeadToHead,

    Average Points CommonOpponentEqual,

    Average GoalsDelta HeadToHead,

    Average GoalsDelta,

    DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  1
  PointsForWinInOvertime:  1
  PointsForWinInShootout:  1
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  0
  PercentOfGamesThatEndInTie:  0
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5287
  WeightType:  Pythagorean
  WeightExponent:  1.4
  WhatDoYouCallATie:  tie
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  promoted
  Promote:  0
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
1/5/13    Stealth       13-12   Knighthawks   (ID: g197qp)
1/11/13   Wings         13-8    Bandits       (ID: g197r7)
1/12/13   Bandits       13-12   Swarm         (ID: g197rt)
1/12/13   Mammoth       13-17   Stealth       (ID: g197qu)
1/12/13   Roughnecks    11-13   Rock          (ID: g197qw)
1/13/13   Rush          9-10    Rock          (ID: g197rm)
1/19/13   Knighthawks   13-14   Bandits       (ID: g197s4)
1/19/13   Rock          7-8     Wings         (ID: g197s1)
1/19/13   Roughnecks    12-13   Mammoth       (ID: g197qe)
1/20/13   Stealth       10-18   Rush          (ID: g197qx)
1/25/13   Mammoth       12-19   Roughnecks    (ID: g197rj)
1/25/13   Rock          13-12   Swarm         (ID: g197qs)
1/25/13   Rush          10-12   Stealth       (ID: g197qd)
1/26/13   Bandits       14-13   Wings         (ID: g197q5)
1/26/13   Knighthawks   7-11    Rock          (ID: g197rx)
1/26/13   Swarm         15-14   Stealth       (ID: g197ra)
1/27/13   Wings         8-16    Roughnecks    (ID: g19a0r)
2/2/13    Bandits       12-14   Rock          (ID: g197rn)
2/2/13    Knighthawks   7-6     Stealth       (ID: g197q4)
2/2/13    Mammoth       15-9    Swarm         (ID: g197s5)
2/2/13    Rush          15-18   Roughnecks    (ID: g197r9)
2/8/13    Swarm         13-12   Rock          (ID: g197qg)
2/8/13    Wings         10-20   Knighthawks   (ID: g197rw)
2/9/13    Bandits       7-15    Knighthawks   (ID: g197qy)
2/9/13    Roughnecks    9-8     Rush          (ID: g197s6)
2/9/13    Stealth       13-6    Mammoth       (ID: g197q7)
2/15/13   Rock          17-12   Roughnecks    (ID: g197q6)
2/15/13   Rush          15-10   Stealth       (ID: g19a0s)
2/16/13   Knighthawks   6-10    Bandits       (ID: g197qt)
2/16/13   Mammoth       7-14    Rush          (ID: g197ru)
2/16/13   Swarm         16-17   Roughnecks    (ID: g197rc)
2/22/13   Rush          8-13    Swarm         (ID: g197r5)
2/23/13   Knighthawks   8-10    Wings         (ID: g197qr)
2/23/13   Stealth       16-14   Roughnecks    (ID: g197rv)
2/24/13   Swarm         9-14    Rush          (ID: g197r1)
2/24/13   Wings         14-12   Mammoth       (ID: g197rs)
2/28/13   Rock          13-15   Bandits       (ID: g197qm)
3/1/13    Bandits       10-11   Wings         (ID: g19a0t)
3/2/13    Mammoth       11-12   Knighthawks   (ID: g19a0u)
3/2/13    Roughnecks    13-18   Rush          (ID: g197qn)
3/3/13    Stealth       11-8    Swarm         (ID: g197ri)
3/8/13    Rock          14-10   Mammoth       (ID: g19a0v)
3/8/13    Roughnecks    19-15   Swarm         (ID: g197qz)
3/9/13    Bandits       6-12    Mammoth       (ID: g197rf)
3/9/13    Wings         10-16   Stealth       (ID: g197s7)
3/16/13   Knighthawks   9-11    Rush          (ID: g197s3)
3/16/13   Mammoth       16-13   Bandits       (ID: g197rd)
3/16/13   Swarm         12-5    Stealth       (ID: g19a0w)
3/16/13   Wings         8-13    Rock          (ID: g197qc)
3/23/13   Bandits       7-14    Rush          (ID: g19a0x)
3/23/13   Roughnecks    12-11   Mammoth       (ID: g19a0y)
3/24/13   Rock          12-17   Rush          (ID: g197q9)
3/29/13   Rock          18-11   Bandits       (ID: g19a0z)
3/29/13   Swarm         20-11   Wings         (ID: g197ry)
3/30/13   Knighthawks   12-8    Rock          (ID: g19a10)
3/30/13   Mammoth       10-9    Wings         (ID: g197r4)
3/30/13   Stealth       11-13   Roughnecks    (ID: g19a11)
4/6/13    Knighthawks   14-7    Wings         (ID: g19a12)
4/6/13    Roughnecks    11-12   Stealth       (ID: g197rr)
4/6/13    Rush          7-9     Mammoth       (ID: g197r0)
4/6/13    Swarm         21-7    Bandits       (ID: g197q8)
4/7/13    Rock          10-9    Knighthawks   (ID: g197rq)
4/7/13    Wings         15-13   Swarm         (ID: g197rp)
4/13/13   Mammoth       12-17   Swarm         (ID: g19a13)
4/13/13   Roughnecks    14-15   Knighthawks   (ID: g19a14)
4/13/13   Stealth       10-15   Bandits       (ID: g19a15)
4/13/13   Wings         10-9    Rock          (ID: g19a16)
4/14/13   Rush          14-10   Knighthawks   (ID: g197rh)
4/20/13   Bandits       9-10    Knighthawks   (ID: g197qa)
4/20/13   Rush          11-12   Roughnecks    (ID: g197qv)
4/20/13   Stealth       17-13   Wings         (ID: g197re)
4/20/13   Swarm         14-16   Mammoth       (ID: g197s2)
GamesEnd