Sunday, October 25, 2015

Dallas Keuchel Tops AL Run Prevention Leaders

Astros ace Dallas Keuchel is a strong Cy Young candidate
(Photo Credit: Mark J. Rebilas, USA Today Sports)

With the regular season now in the distant past, I'll present the final installment of the American League run prevention leaders.   

There is no surefire way to determine the best pitchers in baseball, but a pitcher's job is to prevent runs.  So, it's useful to estimate how many runs pitchers saved their teams compared to an average pitcher.  There are several different ways to do this:   
  • Pitching Runs -  Runs Saved Above Average based on innings and runs allowed. 
  • Base Runs -  Runs Saved Above Average based on batters faced and hits, walks, total bases and home runs allowed.
  • FIP Runs - Runs Saved Above Average based on innings, bases on balls, hit batsmen and home runs allowed and strikeouts.
These measures are discussed in more detail in an earlier post.  After computing them, you can aggregate them using weights depending on which measures you trust the most.  Here, they are calculated using a simple average.

The 2015 American League leaders are listed in Table 1 below.  Astros southpaw Dallas Keuchel finished first in Pitching Runs (43), Adjusted Pitching Runs (42) and Base Runs (41) and third in FIP Runs (36).  That gave him a league-leading 40 runs prevented compared to an average pitcher. David Price of the Tigers and Blue Jays was second with 34 runs prevented and Athletics ace Sonny Gray was a distant third at 26.

Beyond Price who accumulated 18 runs prevented with Detroit, the leading Tiger was Justin Verlander with 11 in 133.1 innings.  As you probably guessed, the rest of the staff did not do so well as no other starter finished above average.  Moreover, of 18 pitchers who cost their teams at least 10 runs, four - Shane Greene (20), Alfredo Simon (19), Buck Farmer (-14) and Anibal Sanchez (-10) - pitched exclusively for the Tigers and one other - Matt Boyd (-19) - pitched mostly for the Tigers.  

Table 1: 2015 American League Run Prevention Leaders
Pitcher
Team
IP
Pitching Runs
Adjusted Pitching Runs
Base Runs
FIP Runs
Average
Dallas Keuchel*
HOU
232
43
42
41
36
40
David Price*
***
220.1
35
36
28
38
34
Sonny Gray
OAK
208
28
27
33
17
26
Chris Sale*
CHW
208.2
11
16
21
37
21
Chris Archer
TBR
212
16
13
26
30
21
Corey Kluber
CLE
222
14
13
26
33
21
Carlos Carrasco
CLE
183.2
12
12
20
30
18
Jose Quintana*
CHW
206.1
17
23
5
27
18
Marco Estrada
TOR
181
19
19
20
-0
14
Adam Warren
NYY
131.1
12
15
15
11
13
Felix Hernandez
SEA
201.2
16
14
14
7
13
Jake Odorizzi
TBR
169.1
16
13
9
10
12
Justin Verlander
DET
133.1
7
9
16
12
11
Danny Salazar
CLE
185
9
8
13
14
11
Collin McHugh
HOU
203.2
8
7
7
16
9
Masahiro Tanaka
NYY
154
7
11
11
6
9
Yovani Gallardo
TEX
184.1
12
17
-3
11
9
Scott Kazmir*
***
182.3
10
9
11
5
9
Wei-Yin Chen*
BAL
191.1
13
17
-3
5
8
Edinson Volquez
KCR
200.1
6
5
9
11
8
Erasmo Ramirez
TBR
163.1
5
2
16
7
7
Kyle Gibson
MIN
194.2
5
8
8
8
7
Garrett Richards
LAA
207.1
5
-1
16
5
6
Data source: Baseball-Rerence.com

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