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Pitch Repertoire

September 9, 2011
Justin Verlander is having a tremendous season. On Wednesday, he won his MLB best 22nd game, and the Tigers ace also leads all pitchers in innings pitched (229.0), strikeouts (232), and is the American League leader in ERA (2.44). With Verlander pitching so well, one might wonder what types and mix of pitches he uses to achieve such success.

In the forthcoming 2012 edition of The Bill James Handbook, we will be introducing a section that presents the repertoire of all pitchers in 2011. The information provided will include the frequency of each pitch thrown, as well as his average fastball velocity. As an example, here is Verlander's repertoire:
 
 

Pitch Repertoire
Player Fastball Velocity
Fastball Cutter Curve Slider Change Other
Justin Verlander
95 57% - 19% 8% 17% -
 *Data through games of Thursday, 9/8/11
 
As you can see, Verlander has mixed his pitches pretty well. He relies a fair amount on his 95-mph fastball, but compliments it with a healthy dose of curveballs and change-ups, as well as a smattering of sliders.

What might some other interesting pitcher repertoires look like ?
 
 

Pitch Repertoire
Player Fastball Velocity
Fastball Cutter Curve Slider Change Other
Freddy Garcia
87 37% - 10% 24% 8% Splitter 21%
Tim Wakefield
73 8%
- 2% - - Knuckleball 90%
R.A. Dickey
84
23% - - - 2% Knuckleball 75%
Mariano Rivera
92 13% 87% - - - -
Aroldis Chapman
98 84% - - 16% - -
 *Data through games of Thursday, 9/8/11
 
Freddy Garcia has experienced something of a renaissance this season. Pitching in the vaunted AL East with only a 87-mph fastball, he has survived by throwing it less than half the time and relying more heavily on his array of breaking balls and off-speed stuff.

As the only representatives of the dying breed of knuckleballers in MLB, Tim Wakefield and R.A. Dickey present an interesting contrast. Wakefield, with the fastball of your average high school pitcher, represents the classic knuckleballer, relying almost exclusively on his knuckleball while using his fastball and curveball only sparingly to keep hitters off balance. Dickey, on the other hand, throws a good bit harder and utilizes his fastball much more than Wakefield.

Relief pitchers, of course, do not have to develop repertoires as varied as starting pitchers because they rarely face a hitter more than once in a game. The legend of Mariano Rivera tells of a pitcher that has built a 17-year Hall-of-Fame career throwing a single pitch. While he occasionally uses a traditional fastball, we can see that he does in fact throw that cut-fastball almost as frequently as Wakefield throws his knuckleball. Aroldis Chapman throws his fastball an average of 98-mph. With that kind of velocity, there is no need to throw secondary pitches as much.

The 2012 Bill James Handbook is available for preorder at ACTASports.com and will hit shelves on November 1, 2012.
 
 

COMMENTS (5 Comments, most recent shown first)

dmack4
I hope that treatment isn't the actual cover of the book. Solely due to the cover athlete misspelling. "Steven" vs. "Stephen"
1:36 PM Oct 6th
 
jimbok
"Hits shelves Nov 1, 2012" - Maybe 2011?
11:26 AM Sep 26th
 
CharlesSaeger
I think the ultimate idea would be for this to go into the play-by-play for each game. Instead of just seeing SCBBX, I'd know that the first pitch was a fastball that went 92 mph and was away, outside the strike zone, but was in the upper portion of it laterally, the second pitch was another fastball that went 89 mph in the inside middle part of the zone, the third was a cutter that was just outside and up and went 86 mph, the fourth was a curveball that went away and middle and was 81 mph, and the last pitch that went into play was a fastball that was in the zone but up and was 91 mph. For a newspaper, this isn't feasible, but for bb-ref.com, this would be great OnMouseOver().
1:15 PM Sep 12th
 
bjames
I'm really looking forward to having this data in a public forum. I think it's a useful step toward making some sense of the pitch data that we have accumulated.
10:35 AM Sep 12th
 
Trailbzr
On the old site, I used to print this out for the two starters of games I was attending.
Has this been brought over?

5:31 PM Sep 9th
 
 
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