On Base Percentage?
Kevin Mundstock
I've always thought that On Base Percentage was calculated by the
following formula:
Hits + Walks
---------------
At Bats + Walks
But I calculate it that way and compare it to the stats found in back of
the USA Today Baseball Weekly, and a lot of the time there is a difference.
If the above isn't the right way to calculate OBP, what is? Let me know.
I know the basic formula is correct, but I need to know what to add to the
top and the bottom to make it the same as in BW. Thanks,
Kevin
Patrick Pearse Gallagher
Base Percentage is calculated by the following formula
OBP=(Hits+Walks)/(AB+Walks+Sacrifice Flies+Sacrifice Bunts)
Note that it is possible to have a lower OBP than Batting Average. For
a while Oscar Azocar, then of the NY Yankees, had this situation. He
never walks, but sometimes he sac bunted.
---Patrick
MsciDave
>OK, I've been blasted about the sac fly thing, but as far as I know, On
>Base Percentage is calculated by the following formula
>
>OBP=(Hits+Walks)/(AB+Walks+Sacrifice Flies+Sacrifice Bunts)
You need to add HBP to both terms.
H + BB + HBP
OBA = ------------------------
AB + BB + HBP + SF + SAC
Dave
__________
Dave Bonar
meb...@lsuvax.sncc.lsu.edu
__________
Scott Fischthal
>OK, I've been blasted about the sac fly thing, but as far as I know, On
>Base Percentage is calculated by the following formula
>
>OBP=(Hits+Walks)/(AB+Walks+Sacrifice Flies+Sacrifice Bunts)
>
Close -- but you left out HBP:
OBP= (H+BB+HBP)/(AB+BB+HBP+SF)
I also believe that sacrifices are not included in the denominator (though they
probably ought to be).
Scott Fischthal
Artificial Intelligence Technology Center
Gaithersburg, MD
KEN JOHNSTON
players manage to do this rather well. Dave Hollins comes to mind yet he
hasn't been hit this year nearly as much as last.
Max Kull
pg...@andrew.cmu.edu writes:
> OK, I've been blasted about the sac fly thing, but as far as I know, On
>
> OBP=(Hits+Walks)/(AB+Walks+Sacrifice Flies+Sacrifice Bunts)
How 'bout:
OBP=(Hits+Walks+HitByPitch)/(AB+Walks+HitByPitch+Sacrifice
Flies+Sacrifice Bunts)
Max
Bryan Butler
how 'bout:
OBP = (H+X)/(AB+X+SAC)
where X is any of the five ways to get to first base without
getting a hit (barring fielder's choice...): BB, HBP, passed
ball on 3rd strike, catcher interference, and something else
which i can't seem to remember right now :(
i don't know if this is right, but it seems that if you're
going to count HBP, then the others should also be counted.
-bryan butler
but...@cluster.gps.caltech.edu, or butl...@caltech.edu
David Robert Walker
is:
"divide the total of hits, all bases on balls, and hit by pitch, by
the total of at-bats, all bases on balls, hit by pitch, and sacrifice
flies. For the purpose of computing on-base percentage, ignore being
awarded first base on interference or obstruction."
In math terms, (H + BB + HBP) / (AB + BB + HBP + SF)
Sacrifice bunts are non-entities in the formula. Reacing on an error
hurts your OBP, since it counts as an AB. Catchers interference is
specifically disregarded by the rule as written. Sacrifice flies hurt
your OBP. Reaching on a third-strike passed ball hurts your OBP; it
counts as an AB. Ditto fielder's choice (even a FC where everyone is
safe).
Clay D.
David Grabiner
Aside: Why does everyone insist on correcting the formula for OBP with
his own incorrect version? If you don't know the answer to a question,
please look it up.
The official formula, from Rule 10.22(f):
(H+BB+HBP)/(AB+BB+HBP+SF)
Many people prefer not to count sacrifice flies in the denominator;
there are arguments on both sides. I prefer to count them in the
denominator, because they do represent failed attempts to get on base.
In article <1rsg31...@gap.caltech.edu>, Bryan Butler writes:
> how 'bout:
> OBP = (H+X)/(AB+X+SAC)
> where X is any of the five ways to get to first base without
> getting a hit (barring fielder's choice...): BB, HBP, passed
> ball on 3rd strike, catcher interference, and something else
> which i can't seem to remember right now :(
Reaching on an error.
> i don't know if this is right, but it seems that if you're
> going to count HBP, then the others should also be counted.
I wouldn't count sacrifice bunts (since these do not represent attempts
to get on base), but other than that, this is a reasonable formula.
Fast runners and right-handed pull hitters are more likely to reach on
errors; since this helps the team, they should get some credit.
The advantage of the official formula (with or without SF) is that it
can be computed from the official statistics.
--
David Grabiner, grab...@zariski.harvard.edu
"We are sorry, but the number you have dialed is imaginary."
"Please rotate your phone 90 degrees and try again."
Disclaimer: I speak for no one and no one speaks for me.
Daniel L Rose
<max_...@oakqm3.sps.mot.com> writes:
>>In article <EfsAwA200awLI2AlY=@andrew.cmu.edu> Patrick Pearse Gallagher,
>pg...@andrew.cmu.edu writes:
>>> OK, I've been blasted about the sac fly thing, but as far as I know, On
>>> Base Percentage is calculated by the following formula
>>>
>>> OBP=(Hits+Walks)/(AB+Walks+Sacrifice Flies+Sacrifice Bunts)
>>
>>How 'bout:
>>
>>OBP=(Hits+Walks+HitByPitch)/(AB+Walks+HitByPitch+Sacrifice
>>Flies+Sacrifice Bunts)
>>
>>Max
>how 'bout:
>OBP = (H+X)/(AB+X+SAC)
>where X is any of the five ways to get to first base without
>getting a hit (barring fielder's choice...): BB, HBP, passed
>ball on 3rd strike, catcher interference, and something else
>which i can't seem to remember right now :(
Does reaching base due to an error also count?
>i don't know if this is right, but it seems that if you're
>going to count HBP, then the others should also be counted.
> -bryan butler
> but...@cluster.gps.caltech.edu, or butl...@caltech.edu
dlr
jay rogoff
> a while Oscar Azocar, then of the NY Yankees, had this situation. He
> never walks, but sometimes he sac bunted.
I may be misremembering, but I'm not sure Oscar was ever with the
parent club long enough to have any kind of average that would be
statistically meaningful. But I know you're simply pointing out the
phenomenon, so point taken.
Jay