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: MLL                             (ID: mll) (Sort: Div) (Playoffs: 4)
    Team: Chesapeake Bayhawks (Bayhawks)  (ID: t11dz)
    Team: Boston Cannons      (Cannons)   (ID: t11e0)
    Team: Long Island Lizards (Lizards)   (ID: t11e1)
    Team: Chicago Machine     (Machine)   (ID: t11e2)
    Team: Toronto Nationals   (Nationals) (ID: t11e3)
    Team: Denver Outlaws      (Outlaws)   (ID: t11e4)
  Kind: pro
  Sport: lacrosse
  Gender: male
  Country: USA
  State: 
  Level: B
  Season: 2010 (current: True)
  Author: Anonymous
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Div: Average Points, Average Points 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:  0.5833
  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: away
5/15/10   Lizards     8-16    Bayhawks    (ID: g13cf3)
5/15/10   Outlaws     13-16   Cannons     (ID: g13cf4)
5/16/10   Nationals   9-16    Machine     (ID: g13cf5)
5/22/10   Machine     15-17   Cannons     (ID: g13cf6)
5/22/10   Bayhawks    25-12   Nationals   (ID: g13cf7)
5/22/10   Lizards     10-13   Outlaws     (ID: g13cf8)
5/27/10   Cannons     11-13   Lizards     (ID: g13cf9)
5/30/10   Bayhawks    14-17   Machine     (ID: g13cfa)
5/30/10   Nationals   12-15   Outlaws     (ID: g13cfb)
6/4/10    Cannons     14-17   Bayhawks    (ID: g13cfc)
6/5/10    Outlaws     15-10   Lizards     (ID: g13cfd)
6/5/10    Machine     14-13   Nationals   (ID: g13cfe)
6/12/10   Outlaws     12-17   Cannons     (ID: g13cff)
6/12/10   Lizards     13-12   Machine     (ID: g13cfg)
6/12/10   Bayhawks    10-9    Nationals   (ID: g13cfh)
6/19/10   Outlaws     20-16   Bayhawks    (ID: g13cfi)
6/19/10   Nationals   11-9    Lizards     (ID: g13cfj)
6/20/10   Cannons     19-11   Machine     (ID: g13cfk)
6/24/10   Nationals   17-14   Bayhawks    (ID: g13cfm)
6/25/10   Outlaws     14-18   Machine     (ID: g13cfn)
6/26/10   Lizards     14-17   Cannons     (ID: g13cfp)
7/1/10    Cannons     13-15   Nationals   (ID: g13cfq)
7/3/10    Machine     12-13   Lizards     (ID: g13cfr)
7/4/10    Bayhawks    10-12   Outlaws     (ID: g13cfs)
7/10/10   Cannons     16-10   Bayhawks    (ID: g13cft)
7/10/10   Lizards     17-15   Machine     (ID: g13cfu)
7/10/10   Outlaws     15-14   Nationals   (ID: g13cfv)
7/22/10   Bayhawks    11-14   Lizards     (ID: g13cfw)
7/24/10   Nationals   10-18   Cannons     (ID: g13cfx)
7/24/10   Machine     11-15   Outlaws     (ID: g13cfy)
7/31/10   Machine     11-20   Bayhawks    (ID: g13cfz)
7/31/10   Nationals   11-16   Lizards     (ID: g13cg0)
7/31/10   Cannons     16-5    Outlaws     (ID: g13cg1)
8/7/10    Bayhawks    16-15   Cannons     (ID: g13cg2)
8/7/10    Lizards     13-7    Nationals   (ID: g13cg3)
8/7/10    Machine     8-18    Outlaws     (ID: g13cg4)
GamesEnd