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Brad Penny and the Sinker

April 8, 2010

Let’s forget Jason Motte for a minute. Here’s what’s important about today’s game: Brad Penny is the latest Dave Duncan convert, or at least it seems to be that way. Last season, Penny threw his splitter/change-up about 7.5% of the time. The average speed of the pitch was about 86 MPH. The pitch had about -8 inches of horizontal spin deflection, and 7 inches of vertical spin deflection. This isn’t a pitch to be confused with a sinker. The pitch he was throwing today (mostly those little yellow dots) were 89 MPH on average, with -7 inches of horizontal spin deflection (tail) 5 inches of vertical spin deflection. So the pitch has more speed,  lots of tail and more sink.

These pitches are clearly distinguished from his 4-seam fastball, and he threw it 37% of the time. He induced 13 ground ball outs. Welcome to the Cult of the Two-Seam Fastball, Brad Penny.

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4 Comments
  1. FlimtotheFlam permalink
    April 8, 2010 10:43 PM

    I was pretty happy to see Penny get quality results today. The outcomes matters less right now. Hopefully he believes into the 2 seam system. I like Penny’s upside this season

Trackbacks

  1. (Insert favorite metaphor for glaring weakness here) | Five O'Clock Blogger
  2. Jason Motte and his Fastball Ways « Play a Hard Nine
  3. The Dave Duncan Effect | FanGraphs Baseball

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