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Matt Kemp & The Trouble With Rate Stats

Never jump the gun with rate stats

With a three run home run on September 24, Matt Kemp reached the 100 RBI plateau for the first time in his career.  It also made him, as you can see by the Prime Ticket graphic above, the first Dodger in history to hit .300 with at least 25 home runs, 30 stolen bases, and 100 runs batted in during the same season.

The only problem: the season isn't over yet.

The problem with rate stats, like batting average, is that they can change.  They can go up or down so the only time to claim a certain accomplishment like this is after the season is completed.

Baseball isn't like football.  Counting stats can only go up.  Well, I suppose one could lose some hits due to the discovery of a factual error, such as Ty Cobb's career hit total changing from 4,191 to 4,189, after Pete Rose broke his all-time record.  In football, negative yardage can ruin the best laid plans of mice and men.  Joe Posnanski recounted the story of former Atlanta Falcon Dave Hampton in 1972:

Then on the first play of the fourth quarter, they gave it to Hampton, and he rushed for five yards. One yard away. The next play, they gave him the ball up the middle, and he picked up the precious one yard, he was at exactly 1,000. Cheers! Celebration! They actually stopped the game right there so the crowd could cheer Dave Hampton. They gave him the game ball. I love when they stop games for really obscure achievements, like becoming the first player in Atlanta Falcons history to gain 1,000 yards. Then, you have to understand that in 1972, there had not been that many great sports moments in Atlanta. The day belonged to Dave Hampton.

But, of course, that would not be much of a story. You know what’s coming. A little later in the quarter, Atlanta quarterback Bob Berry dropped back to hand off to Hampton and slipped on some ice. He only barely managed to get the ball into Hampton’s hands before four Chiefs defenders came crashing in. You bet. It was a loss of 6 yards. And suddenly that game ball didn’t feel so great. And because the Chiefs scored late, the Falcons had to throw the ball to try and come back. Hampton got only one more carry, for 1 yard. He finished with 995 yards.

I don't remember the Dodgers stopping the game for Kemp, but there will be time enough for celebrating his accomplishment, if he does it, when the season's done.  Kemp has four hits in his last 27 at-bats, and his average has dropped to .299003. 

Here's a look at what Kemp will need to do over the next two days to keep his average above .300:

At-Bats Hits Needed AVG
1 1 .3002
2 2 .3013
3 2 .3008
4 2 .3003
5 3 .3015
6 3 .3010
7 3 .3005
8 3 .3000
9 4 .3011
10 4 .3007

There are a few notes here.  Kemp can go 1-for-2, 2-for-5, or 3-for-9 and get credit for hitting .300, but it would only be due to rounding.  To me, .29951 doesn't equal .300.  There is plenty of opportunity for Kemp to hit .300, but all that matters is what that final number is.

Oh, and if The Bison can get eight or nine total bases over the next two games, or six total bases in one game, he will likely become the first Dodger center fielder to slug .500 since Duke Snider.  Good luck, Matt!

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Comments

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Hmm

Troy Tulowitzki had a chance to be the first shortstop ever with 30+ HR and a .990+ fielding percentage. Of course, when that was reported, he was given “a chance” to reach that, even though he was at both milestones at the time. He was charged (I believe unfairly) with an error the next night, killing that chance. That’s just strange they would post that before the season was out

"I have no special talents. I am only passionately curious." - Albert Einstein

by Andrew T. Fisher on Oct 3, 2009 9:10 AM PDT reply actions  

I hope Tulo is Saberhagen

of the SS world, otherwise he’s going to be a pain in the ass for a while.

Patience is for those who die waiting for something to happen

by Phil Gurnee on Oct 3, 2009 10:15 AM PDT up reply actions  

all the while UZR has him as a league average fielding SS this year.
vr, Xei

by Xeifrank on Oct 3, 2009 10:21 AM PDT up reply actions  

uzr also has Dexter Fowler as one of the worst of in the game

Which is obviously bunk. You look at tulo and tell me he is league average. With his low errors, he would have to be noticably below average in range to be average. I don’t think you’ll find anyone who. Believes that. Uzr may be the best fielding metric there is, but I cannot buy tulo being average

"I have no special talents. I am only passionately curious." - Albert Einstein

by Andrew T. Fisher on Oct 3, 2009 10:52 AM PDT via mobile up reply actions  

Well, you used fielding percentage. :)

UZR may have trouble with Coors outfielders due to the largeness of the park and the depth at which the outfielders must play. Could be some similar park or altitude effects for infielders, like the ball travelling faster but who knows.

Either way, I like Tulo. Heck of a player, who had a down year last year.
vr, Xei

by Xeifrank on Oct 3, 2009 3:09 PM PDT up reply actions  

heh

I wasn’t citing fielding percentage as if I value it greatly. It just pertains to this article and prematurely trumpeting rate stats. I agree that coors screws with the uzr of OF, just look at the career uzrs of willy taveras for evidence of that. Hawpes, however, are quite legitimate.

"I have no special talents. I am only passionately curious." - Albert Einstein

by Andrew T. Fisher on Oct 3, 2009 4:03 PM PDT via mobile up reply actions  

Anyone meeting before the game tonight?

Or just at our seats?

Yeah, well, you know, that's just, like, your opinion, man

by mleadman on Oct 3, 2009 9:28 AM PDT reply actions  

Marty, I’m planning to be in LAby 3 and will probably meet Jacob and BH for something to eat beforehand, if you would like to join us.

by Eric Stephen on Oct 3, 2009 9:30 AM PDT via mobile up reply actions  

Rate stats

like batting average and ERA can easily be converted over to a counting stat.
vr, Xei

by Xeifrank on Oct 3, 2009 9:45 AM PDT reply actions  

Take the players number of at bats and multiply that by league average batting average. Subtract this number from the actual number of hits the player has and that is his batting average turned into a counting stat (0 = league average, > 0 = better than league average).

Hits – (AB * LG Ave BAve)

For Matt Kemp (.299) it will be… (I have no idea what the league average batting average is, but I will make one up just to show an example).

180 – (602 * .270) = 17.46

Juan Pierre (.305)
113 – (371 * .270) = 12.83

vr, Xei

by Xeifrank on Oct 3, 2009 10:19 AM PDT up reply actions  

True but Prime Ticket won’t use a graphic showing hits above average :)

by Eric Stephen on Oct 3, 2009 10:45 AM PDT via mobile up reply actions  

if you can hijack their booth and take their announcers hostage during a game I bet you can get them on the air. :)
vr, Xei

by Xeifrank on Oct 3, 2009 10:51 AM PDT up reply actions  

Matchups

"Everyone" says the one type of stat Torre cares about is matchups. In the DT game thread last night someone said that Thome’s record vs. Street, before his AB out, was 0-5, while Loretta’s is 2-1 (or 2 for 3, you know what I mean). Is that correct? Why would Torre PH Thome then? Just hoping? He’s already decided to put Thome into the playoff roster, maybe not Loretta? Perhaps Thome should be held back until the WS, should we get so far. Then he might get enough practice in the first 4 games, two as DH, to come through in the 5th, or something, should we get that far. Although he would have had two weeks completely off by then. Plus if he actually gets a hit that’s not a HR, he has to be replaced by a runner using up yet another spot in the roster. Is it really helpful to have him on the team after tomorrow?

by berkowit28 on Oct 3, 2009 10:25 AM PDT reply actions  

Matchups + Small Sample Sizecan only go so far

We’re still talking career journeyman vs. one of the greatest hitters of his generation here.

by Jacob Burch on Oct 3, 2009 10:28 AM PDT up reply actions  

Loretta

we’re also talking about a guy who really, really showed his age on wednesday night.

by bearface on Oct 3, 2009 10:32 AM PDT up reply actions  

damn you joe torre

for overusing matt kemp and not giving him days off and now we are seeing the effects..

he had a .310 average and should have easily went .300 but now hes going to have to work for it..

by matthewmafa on Oct 3, 2009 10:32 AM PDT reply actions  

Padilla

I’m not usually an advocate for this kind of stuff, but I’m going to say right now that if the Doyers are still struggling half way into today’s game, through Vicente in there and have him knock Troy Tulowikiz’s smug, Shia Labeouf looking face right on his ass. You know, not hit him in the face, but hit him in the ass. Knock him down. Cause a little bit of a ruckus. Wake this Dodger team up.

by bearface on Oct 3, 2009 10:38 AM PDT reply actions  

His Royalty

I’d imagine Guierllmo’s still having nightmare’s about Fielder trying to eat him. He might be a bit more timid this time around.

by bearface on Oct 3, 2009 10:48 AM PDT up reply actions  

don't know

do’t think tulo is that scary. hitting fielder was brave though

by XXDC2XX on Oct 3, 2009 4:57 PM PDT up reply actions  

grr

through=throw and Tulowikiz = Tulowitzki

by bearface on Oct 3, 2009 10:42 AM PDT up reply actions  

I won’t (publicly) endorse hitting guys but I love the Lebouf comparison. Good call.

by Eric Stephen on Oct 3, 2009 10:42 AM PDT via mobile up reply actions  

I love this idea.

He was driving ’em deep into the Ravine before something like this happens. I can only salivate over the after effects.

"Don't tell me about the world. Not today. It's springtime and they're knocking baseballs around fields where the grass is damp and green in the morning and the kids are trying to hit the curve ball." -Pete Hamill

by Bryce on Oct 3, 2009 12:06 PM PDT up reply actions  

That probably wouldn't just wake up the Dodgers

I’m thinking Morales and Contreras can do some return damage with their 95+ stuff, and Ethier and Kemp wouldn’t enjoy the seam marks very much.

Watching the purple row from high atop the big brown monolith on California Ave

by Mondogarage on Oct 3, 2009 12:35 PM PDT up reply actions  

That’s terrifying.

If I remember correctly, Torrealba didn’t enjoy getting tackled by Kemp last year.

by Michael White on Oct 3, 2009 12:40 PM PDT up reply actions  

That’s very close to what I have us at too (78.17%).
vr, Xei

by Xeifrank on Oct 3, 2009 3:10 PM PDT up reply actions  

Wasn't it great...

Seeing Jake Peavy pitch for the White Sox and not in the NL West?

by RandallP on Oct 3, 2009 12:06 PM PDT reply actions  

Yes

And vindicating seeing him tear up another division.

by bearface on Oct 3, 2009 4:23 PM PDT up reply actions  

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