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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.

Erik Manning

Erik became addicted to Cardinals baseball as a young lad growing up on the mean streets of O'Fallon, MO. He moved away to Tulsa to attend Bible College, where he met his wife, who talked him into moving to Cedar Rapids, Iowa, also known as the Bermuda triangle of baseball. His dream is to see the MLB.tv blackouts end, and his other interests are theology and philosophy of religion. He is the parent of two young boys.

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4 Responses to “Brad Penny and the Sinker”

  1. [...] Penny looked great in his Cardinals debut, deploying his brand-new sinker to get 13 groundball outs to four of the flying variety and earning the Dave Duncan Seal of [...]

  2. 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

  3. [...] Motte and his Fastball Ways April 9, 2010 by stevesommer05 Like Erik, I’m sure we all want to momentarily forget Jason Motte; however, I was curious how the [...]

  4. [...] week Dave, in his piece on Real Groundball Rates, and Erik, in a piece on Brad Penny’s first start, referenced Dave Duncan’s ability to get his pitchers to generate a great deal of groundball [...]

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