This numbers represented in the graph are prior to Tuesday’s start.

In 2010, Romero’s pitches looked like this:

Fastball: 90.8 mph, 9.7 RAR.
Slider: 82.1 mph, 0.9 RAR.
Cutter: 90.1 mph, -0.9 RAR.
Curve: 75.5 mph, 5.4 RAR.
Change: 83.9 mph, 6.9 RAR.

Dave Gershman is a columnist for Getting Blanked. You can find him at Beyond the Box Score as well as on his Twitter Account @Dave_Gershman

Comments (3)

  1. Is RAR similar to the pitch value stats on FanGraphs in that it tells you how effective the pitch is? I’ve always been intrigued as to how those stats work.

  2. Yes, that’s exactly what those are and yeah, they are pretty cool.

    Usually, you’ll see one of the value stats prefixed with a “w” denoting the amount of runs above average that pitch is. Well, I didn’t use the “w” here because it’s not completely necessary and even with a small sample size (three starts for Romero) it should be conclusive enough as well as accurate. Fangraphs pitch value stats are so much fun to play with though and are probably much easier to graph out in a pitch f/x graph or what not (in order to see the spin angle or whatever) but yeah, very intriguing.

  3. I assume, also, that pitch value is cumulative? And over the season the value would grow or shrink accordingly? Don’t suppose you could superimpose his three years over one another to scale and show the relative value of each pitch from season to season? Am I asking too many questions for one chart?

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