Tennis Stats- been bugging me for a while...

Discussion in 'Odds & Ends' started by roundiesee, Oct 20, 2007.

  1. roundiesee

    roundiesee Hall of Fame

    Joined:
    Feb 20, 2004
    Messages:
    2,846
    Would appreciate some views concerning tennis stats we always see on TV re breakpoint conversion.
    Say the score is 30-30 on your opponent's serve, and you then win the next point to go 30-40 up. You then win again and therefore broke your opponent's serve. So you had one breakpoint and converted it, and the breakpoint conversion rate is 100% (1 of 1).
    Now say you played extremely well 2 games later on his serve again, and go up 0-40 (3 breakpoints) and then converted on the fisrt one. I would say that was even better compared to your opponent's previous service game because you broke him to love. HOWEVER, the stats would then show you converted 1 of 3 breakpoints, making your conversion rate now 33%. So even though you played a much better game to break at love, your breakpoint conversion percentage goes down.
    This IMO is misleading. Can anyone comment, and if I'm wrong on this please do correct.
    Thanks.
     
    #1
  2. AdvocateTDV

    AdvocateTDV New User

    Joined:
    Jun 15, 2006
    Messages:
    61
    If my memory serves me right, break point percentages are calculated using the following formula:

    Number of break points converted
    ----------------------------------------------- * 100 %
    Number of break points actually played out

    I don't believe the TV people are counting the break points that are not played (such as the love-40 situation you are describing).
     
    #2
  3. Andres

    Andres G.O.A.T.

    Joined:
    Apr 21, 2005
    Messages:
    12,540
    Location:
    Mar del Plata, Argentina
    If you break your opponent in your first BP (that is 0-40), the other two BP don't count. They don't count the BPs that are not played.

    If you break at 30, your BP conversion rate is 1/1. If you break at love the next game, is 2/2, not 2/4 ;)
     
    #3
  4. roundiesee

    roundiesee Hall of Fame

    Joined:
    Feb 20, 2004
    Messages:
    2,846
    OK, thanks Advocate and Andres, you've cleared my mind. Cheers!
     
    #4

Share This Page