Differences between hockey-reference/corsica/NaturalStatTrick

Discussion in 'By The Numbers' started by GellMann, Oct 14, 2018.

  1. GellMann

    GellMann Registered User

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    Hey guys, how come these different sites have different numbers sometimes? For example, I was looking at Jack Eichel's pages, and they all say quite different things for Corsi, from 46% to 50%. I was under the assumption that none of them score-adjust (Corsica does if you ask it to) so these should all be the same CF/CA numbers, but the CA numbers on these sites differ by as much as 10 through 5 games. What gives, which one is right? I assume this happens for every player then since there's nothing special about the random one I picked out.
     
  2. SniperHF

    SniperHF You might surprise yourself

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    Just a quick look At NST and Corsica, Corsica has Eichel at 50% CF% but only through 4 games. They haven't updated him for his 5th game.
    NST has 5 games.

    Dunno what's up with Hockey Reference.
     
  3. GellMann

    GellMann Registered User

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    Didn't see that NST updated the fifth game, but when it was at 4 I don't believe it was in agreement with Corsica, it was off by a shot or two.

    But yeah, HR is the big one, because I'm now remembering seeing that site be wrong about a lot of things, including PP%, goals for/against for teams, etc.
     
  4. SniperHF

    SniperHF You might surprise yourself

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    FWIW NHL.com agrees with NST.
    68 and 72.
     
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  5. GellMann

    GellMann Registered User

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    So the lesson is probably to be skeptical of hockey reference.

    Edit: Yeah, looking on the Sabres' franchise page, they even give two different values for team goals/team goals against in different places on the same page

    Shame because i love that site
     
  6. Monsieur Gustave H

    Monsieur Gustave H Coming Home

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    Hockey-reference uses even strengh minutes which includes 6v5, 4v4, 3v3 etc. The other two are pre-set to 5v5 only.
     
  7. morehockeystats

    morehockeystats Unusual hockey stats

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    I don't know about NST and HR, but I remember encountering wrong data on Corsica.
     

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