Bill James vs. Aaron Laffey — Career Comparison

Bill James
Lost GenerationCaliforniaThrows RightBats RightNorth AmericaBoston BravesNational LeagueStarting Pitcher
Aaron Laffey
MillenialMarylandThrows LeftBats LeftNorth AmericaCleveland GuardiansAmerican LeagueStarting Pitcher

On the career pitching numbers, Bill James posted a stronger line than Aaron Laffey. Bill James posted stronger numbers in ERA (2.28 vs 4.44) and WHIP (1.233 vs 1.535). By the career numbers, Bill James had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.

Pitching Stats for Bill James and Aaron Laffey

Bill James
Career
Per 9 Innings
4
4
Aaron Laffey
Careerverified
Per 9 Inningsverified
8
8
Bill James
Career
Per 9 Innings
84
1.4
Aaron Laffey
Careerverified
Per 9 Inningsverified
156
2.84
Bill James
Career
Per 9 Innings
61
1.01
Aaron Laffey
Careerverified
Per 9 Inningsverified
68
1.24
Bill James
Careerverified
Per 9 Inningsverified
37
0.61
Aaron Laffey
Career
Per 9 Innings
26
0.47
Bill James
Careerverified
Per 9 Inningsverified
21
0.35
Aaron Laffey
Career
Per 9 Innings
29
0.53
Bill James
Careerverified
Per 9 Inningsverified
63.79
63.79
Aaron Laffey
Career
Per 9 Innings
47.27
47.27
Bill James
Careerverified
Per 9 Inningsverified
72.62
72.62
Aaron Laffey
Career
Per 9 Innings
43.59
43.59
Bill James
Careerverified
Per 9 Inningsverified
44
0.73
Aaron Laffey
Career
Per 9 Innings
0
0
Bill James
Careerverified
Per 9 Inningsverified
5
0.08
Aaron Laffey
Career
Per 9 Innings
0
0
Bill James
Careerverified
Per 9 Inningsverified
2
0.03
Aaron Laffey
Career
Per 9 Innings
1
0.02
Bill James
Careerverified
Per 9 Inningsverified
137
2.28
Aaron Laffey
Career
Per 9 Innings
244
4.44
Bill James
Careerverified
Per 9 Inningsverified
2.28
2.28
Aaron Laffey
Career
Per 9 Innings
4.44
4.44
Bill James
Careerverified
Per 9 Inningsverified
2.97
2.97
Aaron Laffey
Career
Per 9 Innings
5.01
5.01
Bill James
Careerverified
Per 9 Inningsverified
3.63
3.63
Aaron Laffey
Career
Per 9 Innings
4.65
4.65
Bill James
Careerverified
Per 9 Inningsverified
0.235
0.235
Aaron Laffey
Career
Per 9 Innings
0.286
0.286
Bill James
Careerverified
Per 9 Innings
1625
27
Aaron Laffey
Career
Per 9 Innings
1483
27
Bill James
Careerverified
Per 9 Innings
541.2
9
Aaron Laffey
Career
Per 9 Innings
494.1
9
Bill James
Careerverified
Per 9 Inningsverified
469
7.79
Aaron Laffey
Career
Per 9 Innings
552
10.05
Bill James
Careerverified
Per 9 Inningsverified
7.79
7.79
Aaron Laffey
Career
Per 9 Innings
10.05
10.05
Bill James
Careerverified
Per 9 Inningsverified
14
0.23
Aaron Laffey
Career
Per 9 Innings
48
0.87
Bill James
Careerverified
Per 9 Inningsverified
0.23
0.23
Aaron Laffey
Career
Per 9 Innings
0.87
0.87
Bill James
Careerverified
Per 9 Inningsverified
0.17
0.17
Aaron Laffey
Career
Per 9 Innings
0.31
0.31
Bill James
Career
Per 9 Inningsverified
199
3.31
Aaron Laffey
Career
Per 9 Innings
199
3.62
Bill James
Careerverified
Per 9 Inningsverified
0
0
Aaron Laffey
Career
Per 9 Innings
8
0.15
Bill James
Careerverified
Per 9 Inningsverified
3.31
3.31
Aaron Laffey
Career
Per 9 Innings
3.62
3.62
Bill James
Careerverified
Per 9 Innings
253
4.2
Aaron Laffey
Career
Per 9 Inningsverified
245
4.46
Bill James
Career
Per 9 Innings
4.2
4.2
Aaron Laffey
Careerverified
Per 9 Inningsverified
4.46
4.46
Bill James
Careerverified
Per 9 Inningsverified
3.01
3.01
Aaron Laffey
Career
Per 9 Innings
1.57
1.57
Bill James
Career
Per 9 Innings
0.835
0.835
Aaron Laffey
Careerverified
Per 9 Inningsverified
0.898
0.898
Bill James
Career
Per 9 Innings
17
0.28
Aaron Laffey
Careerverified
Per 9 Inningsverified
13
0.24
Bill James
Careerverified
Per 9 Inningsverified
22
0.37
Aaron Laffey
Career
Per 9 Innings
28
0.51
Bill James
Careerverified
Per 9 Inningsverified
2
0.03
Aaron Laffey
Career
Per 9 Innings
4
0.07
Bill James
Careerverified
Per 9 Innings
2217
36.84
Aaron Laffey
Career
Per 9 Inningsverified
2181
39.71
Bill James
Careerverified
Per 9 Inningsverified
20
0.33
Aaron Laffey
Career
Per 9 Innings
13
0.24
Bill James
Careerverified
Per 9 Inningsverified
196
3.26
Aaron Laffey
Career
Per 9 Innings
270
4.92
Bill James
Careerverified
Per 9 Inningsverified
3.26
3.26
Aaron Laffey
Career
Per 9 Innings
4.92
4.92
Bill James
Careerverified
Per 9 Inningsverified
0
0
Aaron Laffey
Career
Per 9 Innings
11
0.2
Bill James
Careerverified
Per 9 Inningsverified
0
0
Aaron Laffey
Career
Per 9 Innings
13
0.24
Bill James
Career
Per 9 Innings
0
0
Aaron Laffey
Careerverified
Per 9 Inningsverified
74
1.35
Bill James
Careerverified
Per 9 Inningsverified
1.233
1.233
Aaron Laffey
Career
Per 9 Innings
1.519
1.519
Bill James
Careerverified
Per 9 Innings
1996
33.16
Aaron Laffey
Career
Per 9 Inningsverified
1930
35.14
Bill James
Career
Per 9 Innings
2.33
2.33
Aaron Laffey
Careerverified
Per 9 Inningsverified
1.73
1.73
Bill James
Careerverified
Per 9 Inningsverified
0.263
0.263
Aaron Laffey
Career
Per 9 Innings
0.308
0.308
Bill James
Career
Per 9 Innings
36.84
36.84
Aaron Laffey
Careerverified
Per 9 Inningsverified
39.71
39.71

Fielding Stats for Bill James and Aaron Laffey

Bill James
Career
Per 9 Innings
4
Aaron Laffey
Careerverified
Per 9 Inningsverified
8
8
Bill James
Career
Per 9 Innings
84
Aaron Laffey
Careerverified
Per 9 Inningsverified
156
2.84
Bill James
Career
Per 9 Innings
0
Aaron Laffey
Careerverified
Per 9 Inningsverified
68
1.24
Bill James
Career
Per 9 Innings
0
Aaron Laffey
Careerverified
Per 9 Inningsverified
1483
27
Bill James
Career
Per 9 Innings
0
Aaron Laffey
Careerverified
Per 9 Inningsverified
494.1
9
Bill James
Career
Per 9 Innings
13
Aaron Laffey
Careerverified
Per 9 Inningsverified
28
0.51
Bill James
Careerverified
Per 9 Innings
148
Aaron Laffey
Career
Per 9 Inningsverified
80
1.46
Bill James
Career
Per 9 Inningsverified
17
Aaron Laffey
Careerverified
Per 9 Innings
3
0.05
Bill James
Careerverified
Per 9 Innings
178
Aaron Laffey
Career
Per 9 Inningsverified
111
2.02
Bill James
Careerverified
Per 9 Innings
161
Aaron Laffey
Career
Per 9 Inningsverified
108
1.97
Bill James
Career
Per 9 Innings
90.45
Aaron Laffey
Careerverified
Per 9 Inningsverified
97.3
97.3
Bill James
Careerverified
Per 9 Innings
1.917
Aaron Laffey
Career
Per 9 Inningsverified
0.692
0.692
Bill James
Career
Per 9 Innings
0
Aaron Laffey
Careerverified
Per 9 Inningsverified
43.59
43.59
Bill James
Careerverified
Per 9 Innings
9
Aaron Laffey
Career
Per 9 Inningsverified
6
0.11
Bill James
Career
Per 9 Innings
0
Aaron Laffey
Career
Per 9 Innings
0
0
Bill James
Career
Per 9 Innings
0
Aaron Laffey
Career
Per 9 Innings
0
0
Bill James
Career
Per 9 Innings
0
Aaron Laffey
Career
Per 9 Innings
0
0
Bill James
Career
Per 9 Innings
0
Aaron Laffey
Career
Per 9 Innings
0
0

Hitting Stats for Bill James and Aaron Laffey

Bill James
Career
Per 600 PA
4
4
Aaron Laffey
Careerverified
Per 600 PAverified
8
8
Bill James
Career
Per 600 PA
88
251.43
Aaron Laffey
Careerverified
Per 600 PAverified
156
10400
Bill James
Careerverified
Per 600 PA
210
600
Aaron Laffey
Career
Per 600 PA
9
600
Bill James
Careerverified
Per 600 PA
199
568.57
Aaron Laffey
Career
Per 600 PAverified
9
600
Bill James
Careerverified
Per 600 PAverified
0.231
0.231
Aaron Laffey
Career
Per 600 PA
0.222
0.222
Bill James
Careerverified
Per 600 PAverified
0.529
0.529
Aaron Laffey
Career
Per 600 PA
0.444
0.444
Bill James
Careerverified
Per 600 PA
46
131.43
Aaron Laffey
Career
Per 600 PAverified
2
133.33
Bill James
Careerverified
Per 600 PA
41
117.14
Aaron Laffey
Career
Per 600 PAverified
2
133.33
Bill James
Careerverified
Per 600 PAverified
5
14.29
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Career
Per 600 PA
0
0
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Career
Per 600 PA
0
0
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Careerverified
Per 600 PAverified
5
14.29
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Careerverified
Per 600 PAverified
0.109
0.109
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Career
Per 600 PA
0
0
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Career
Per 600 PA
0
0
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Careerverified
Per 600 PAverified
12.16
34.74
Aaron Laffey
Career
Per 600 PA
0.4
26.79
Bill James
Careerverified
Per 600 PAverified
51
145.71
Aaron Laffey
Career
Per 600 PA
2
133.33
Bill James
Careerverified
Per 600 PAverified
49
140
Aaron Laffey
Career
Per 600 PA
2
133.33
Bill James
Careerverified
Per 600 PAverified
0.243
0.243
Aaron Laffey
Career
Per 600 PA
0.222
0.222
Bill James
Careerverified
Per 600 PAverified
0.256
0.256
Aaron Laffey
Career
Per 600 PA
0.222
0.222
Bill James
Careerverified
Per 600 PAverified
0.499
0.499
Aaron Laffey
Career
Per 600 PA
0.444
0.444
Bill James
Careerverified
Per 600 PAverified
0.025
0.025
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Careerverified
Per 600 PAverified
0.173
0.173
Aaron Laffey
Career
Per 600 PA
0.156
0.156
Bill James
Careerverified
Per 600 PAverified
0.366
0.366
Aaron Laffey
Career
Per 600 PA
0.286
0.286
Bill James
Careerverified
Per 600 PAverified
0.297
0.297
Aaron Laffey
Career
Per 600 PA
0.286
0.286
Bill James
Careerverified
Per 600 PAverified
18
51.43
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Careerverified
Per 600 PAverified
9
25.71
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Careerverified
Per 600 PAverified
27
77.14
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Careerverified
Per 600 PAverified
13.98
39.94
Aaron Laffey
Career
Per 600 PA
0.47
31.45
Bill James
Careerverified
Per 600 PAverified
1
2.86
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Careerverified
Per 600 PAverified
2
5.71
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Career
Per 600 PA
0
0
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Career
Per 600 PAverified
44
125.71
Aaron Laffey
Careerverified
Per 600 PA
2
133.33
Bill James
Careerverified
Per 600 PAverified
4.77
4.77
Aaron Laffey
Career
Per 600 PA
4.5
4.5
Bill James
Careerverified
Per 600 PAverified
0.05
0.05
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Careerverified
Per 600 PAverified
8
22.86
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Career
Per 600 PA
0
0
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Career
Per 600 PA
0
0
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Careerverified
Per 600 PAverified
2
5.71
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Career
Per 600 PA
0
0
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Careerverified
Per 600 PAverified
2
5.71
Aaron Laffey
Career
Per 600 PA
0
0
Bill James
Careerverified
Per 600 PAverified
100
100
Aaron Laffey
Career
Per 600 PA