Originally written February 02, 2013 on ChadMoriyama.com:
As fans of the Dodgers, we’re always analyzing which pitchers have the best and worst pitches, but we normally base that on nothing but our own feelings at the moment, so I decided to take a more objective look at things. For a pitch to qualify for these rankings, I used a 200-pitch minimum for starters and a 50-pitch minimum for relievers. The metric used to measure pitch effectiveness is True Average (TAv), which is basically like wOBA. League average performance is set at .260, and the metric doesn’t include baserunning. Additionally, to prevent the post from being solely numbers-based, and one that would have been mind-numbingly boring, I decided to provide visual evidence as well. —– Worst Overall Pitches Shawn Tolleson – Sinker – .395 TAv Mike MacDougal – Sinker – .342 TAv Matt Guerrier – Fastball – .320 TAv Relief pitchers have smaller sample sizes, so they are prone to fluctuations, but they have the advantage of appearing in short bursts and limiting their arsenal to only their best pitches. So … uh … this is TERRIBLE. .395 is like 40 points higher than Mike Trout in 2012 for ***** sake. H-h-how? —– Worst Individual Pitches Fastball Matt Guerrier – .320 TAv *Visual Is Above* Shawn Tolleson – .273 Javy Guerra – .256 Scott Elbert – .237 Ronald Belisario – .082 Ugh. Sinker Shawn Tolleson – .395 TAv *Visual Is Above* Mike MacDougal – .342 Brandon League – .280 Todd Coffey – .263 Randy Choate – .262 Jamey Wright – .258 Ronald Belisario – .225 No … just no. Cutter Jamey Wright – .258 TAv Scott Elbert – .242 Javy Guerra – .208 Kenley Jansen – .187 Matt Guerrier – .139 Curve Javy Guerra – .271 TAv Jamey Wright – .171 Finishing last out of two isn’t bad, but giving up a .271 on a curve as a reliever is. Slider Kenley Jansen – .236 TAv Jamey Wright – .215 Todd Coffey – .214 Shawn Tolleson – .206 Brandon League – .147 Ronald Belisario – .121 Randy Choate – .058 I actually think he could benefit from throwing this more often because it’s a quality pitch. Not hanging it is a different story, but how is he supposed to learn command of it if he never uses it? Change None Qualified Splitter Brandon League – .096 TAv He’s the only reliever that qualified for this pitch, so I guess he’s technically the best and the worst, but considering his split was the second-most effective pitch by a reliever for the team in 2012, I’m pretty sure he gets a pass.

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