Adjusted win percentage

This topic contains 0 replies, has 1 voice, and was last updated by  Chad Moechnig 1 year, 8 months ago.

  • Author
    Posts
  • #10759

    Chad Moechnig
    Keymaster

    Jeff
    Post subject: Adjusted win percentage PostPosted: Fri May 26, 2006 12:30 am

    http://www.fightergirls.com

    Joined: Wed Dec 31, 1969 4:00 pm

    Posts: 0
    Since a win-loss-draw record by itself can be misleading, I suggest the following:
    1) Get the W-L-D records of a fighter’s opponents.
    2) Calculate the win percentage of each opponent. The equation would be: (Wins + 0.5*Draws) / (Wins + Losses + Draws)
    3) Get the weighted average of all the opponents’ win percentages. The weight of each opponent’s win % equals the number of matches they had with the fighter.
    4) Calculate the fighter’s win % and average this with the weighted opponent average. This will yield the fighter’s adjusted win %.

    Example 1:

    Fighter A’s record is 1-1-0. Her win % would be 0.50. Her opponents were B and C.
    B’s record is 1-2-0 for a win % of 0.33.
    C’s record is 3-1-0 for a win % of 0.75.
    Weighted average of 0.33 and 0.75 is 0.54.
    Average of 0.50 and 0.54 is 0.52.
    Therefore, Fighter A’s adjusted win % is 0.52.

    Example 2:

    Fighter D’s record is 1-2-0 for a win % of 0.33. Her opponents were E and F; she fought F twice.
    E’s record is 0-1-0 for a win % of 0.
    F’s record is 2-1-0 for a win % of 0.67.
    Weighted average of E and F is 0.447. (F’s % has a weight of 2 and E’s a weight of 1. (1*0 + 2*0.67) / 3 = 0.447)
    Average of 0.33 and 0.447 is roughly 0.39.
    Therefore, Fighter D’s adjusted win % is 0.39.

    Example 3:

    Fighter G’s record is 2-0-1 for a win % of 0.83. Her opponents were H, I, and J.
    H’s record is 1-1-1 for a win % of 0.50.
    I’s record is 0-2-0 for a win % of 0.
    J’s record is 0-1-1 for a win % of 0.25.
    Weighted average of all 3 opponents is 0.25.
    Average of 0.83 and 0.25 is 0.54.
    Therefore, Fighter G’s adjusted win % is 0.54.

    Last edited by Jeff on Tue May 30, 2006 7:18 am, edited 1 time in total.

    Top

    Rikki
    Post subject: PostPosted: Fri May 26, 2006 8:13 am
    Instructor

    Joined: Mon Aug 09, 2004 6:56 am
    Posts: 915
    Location: Lexington, KY
    😯 My head hurts. 😆

    Top

    Jeff
    Post subject: PostPosted: Fri May 26, 2006 3:26 pm

    Joined: Wed Dec 31, 1969 4:00 pm
    Posts: 0
    The idea is to have a win number that gives a bonus or penalty for the level of the opponents. The following fighters will all have the same adjusted win % in the above system:

    A fighter who goes .250 against .750 competition
    A fighter who goes .500 against .500 competition
    A fighter who goes .750 against .250 competition

    This is essentially a simplified version of college sports rating systems.

    Top

Viewing 1 post (of 1 total)

You must be logged in to reply to this topic.

© 2014 Fighter Girls.  All Rights Reserved.

Fighter girls®

Fightergirls.com®

Forgot your details?