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  1. As far as i am concerned, a “cutter” with that much difference from his fastball is simply a hard slider, even if its gripped like a cutter. A true cutter is no more than 3 MPH off the regular fastball speed.

    Comment by joe — September 15, 2009 @ 8:00 pm

  2. This data is from the all-star break, so the exact numbers are no longer precise, but the general information they indicate is still valid.

    Since Haren was traded, his Cutter usage has increased from 1.6% at 88.4 MPH to 6.6% at 87.8 MPH to 17.5% at 86.5 MPH. Haren has gone from rarely going the cut fastball to utilizing it almost 20% of the time. Over this period, Haren has clearly refined the quality of the pitch, as it has almost quadrupled in runs/100 pitch value from 1.7 to 6.5 in just 3 years. In plain english, this means that Dan Haren’s cutter, per ever 100 times it is thrown, has prevented approx. 6.5 runs or garnered the Diamondbacks about two-thirds of a win in value.

    Alas, despite the increasing usage/quality of his Cutter, it still is not Dan Haren’s best pitch. That pitch still remains, and increasingly is, his fastball. Dan Haren has a sick fastball that, on average, breaks 10.5 inches down and 6.5 inches in on hitters. Such disgusting movement, as one would expect, has led to the best fastball in the majors by a quarter of a win margin (Haren’s 18.5 runs/100 pitch value on his fastball is the best in the majors; second is Zack Greinke at 16.3).

    So what is to attribute to Haren’s successes this season? Let’s create a checklist.
    1) Sick control. Dan Haren’s 7.43 K/BB leads the majors
    2) Sick command. Dan Haren’s 1.17 BB/9 also leads the majors
    3) Improving pitches. This season, Haren’s fastball quality has almost doubled in value, while his cutter has continued to improve and his split finger fastball is back to form (from -1.4 runs/100 pitchs to +4.5)
    4) A four plus-pitch mix. Each of Dan Haren’s four pitches (fastball, cutter, curveball, splitfinger fastball) have positive runs/100 pitch values and good mixture (none is thrown less than 13.8% or more than 48% of the time)
    5) A very lucky 84.5 LOB% and .239 BABIP, although the Diamondbacks do have the 8th best defense in baseball right now

    Comment by Jeffrey Gross — September 15, 2009 @ 9:17 pm

  3. Gameday’s pitch classification is extraordinarily bad. I wouldn’t use it for analysis if you want any kind of accuracy.

    Comment by Andrew — September 15, 2009 @ 9:41 pm

  4. Here are all of the pitches that Haren has thrown this year:

    As you can see there is a lot of blending, but you do have some decent clusters. It definitely appears that BIS is closer than Gameday is, as his slider and cutter are basically the same pitch.

    Comment by Nick — September 16, 2009 @ 12:06 am

  5. Agreed Andrew, its terrible. Useful for large sample charting and tendencies, silly for any sort of one game analysis. Wasn’t it the basis for claiming Lincecum was finished after 2 starts this year? Hmm, I wonder if some of those guys who chirped in that thread would like to restate their positions?

    Comment by CaR — September 16, 2009 @ 12:35 am

  6. That sure looks like a cutter to me. It’s about 3 mph slower than his fastball, with a vertical spin deflection of 5-8 inches. That’s classic cutter territory.

    The other thing I look at to determine cutter vs. slider is whether the spin deflection and speed distribution for the pitch falls closer to a pitcher’s fastball distribution or his curveball distribution, assuming he throws a curveball. A slider will tend be closer to the curveball, and a cutter will tend to be closer to the fastball. Haren’s curveball is already pretty slurvy, and even still, the distribution of this pitch falls somewhat closer to his fastball. Ergo, cutter.

    In early 2008, the pitch he threw was 7-8 mph slower than his fastball, with a vertical spin deflection of 0-6 inches. That’s a pretty classic slider.

    He’s definitely throwing a new/different pitch now as compared to then.

    Comment by Mike Fast — September 16, 2009 @ 11:00 am

  7. Man, that title and not one Scarface reference?

    Comment by joser — September 16, 2009 @ 1:41 pm

  8. I think its time to invent a new type of pitch: A cut-slider, slutter. A real cutter is thrown about as often as their fastball, and moves about the exact opposite of a 2-seam. “Cutter’s” like Haren’s are out-pitches, like any other breaking ball, not something you throw as your bread and butter. Thank Josh Roenicke for giving me the idea.

    Comment by joe — September 16, 2009 @ 5:27 pm

  9. Honestly I was hoping for the splitter so I could make a bad pun out of it… SAY HELLO TO MY SPLITTER FRIEND!

    Comment by Slurve — September 16, 2009 @ 11:49 pm

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