Roy Mahaffey - Pitching
Baseball Player Won-Loss Records
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Roy Mahaffey
- Pitching
Only includes
games
for which
Retrosheet
has released play-by-play data
(Numbers in italics indicate Retrosheet is missing some games)
Pitching records with missing games extrapolated
Positional Averages for Pitchers
(Wgted Avg of Options): 0.500
vs. Different Values for Starting vs. Relief Pitchers: (Empirical)
(Based on Pitchers who Do Both)
Pitching Won-Lost Records
pWins over Positional Average
Season
Team
pWins
pLoss
Starter
Relief
Total
1926
PIT
0.0
0.0
-
0.0
0.0
1927
PIT
0.2
0.3
-0.1
-0.0
-0.0
1928
-
-
-
-
-
-
1929
-
-
-
-
-
-
1930
PHA
7.0
7.5
-0.1
-0.4
-0.4
1931
PHA
9.9
8.4
1.2
0.3
0.3
1932
PHA
10.1
12.2
-1.2
-0.8
-0.8
1933
PHA
9.1
8.3
0.8
-0.0
-0.0
1934
PHA
6.2
6.8
-1.4
0.8
0.8
1935
PHA
6.3
6.0
-0.3
0.6
0.6
1936
SLA
3.0
4.6
-1.6
-0.1
-0.1
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CAREER (reg. season)
51.9
54.1
-2.6
0.4
-2.2
Pitching Won-Lost Records by Component
Component 1
Component 2
Season
Team
eWins
eLoss
Net Wins
eWins
eLoss
Net Wins
1926
PIT
0.0
0.0
-0.0
0.0
0.0
0.0
1927
PIT
0.0
0.0
-0.0
0.0
0.0
-0.0
1928
-
-
-
-
-
-
-
1929
-
-
-
-
-
-
-
1930
PHA
0.0
0.1
-0.1
0.1
0.1
0.0
1931
PHA
0.1
0.1
-0.0
0.1
0.1
-0.0
1932
PHA
0.2
0.2
0.0
0.1
0.1
0.0
1933
PHA
0.1
0.1
-0.0
0.1
0.1
0.0
1934
PHA
0.0
0.1
-0.1
0.1
0.1
-0.0
1935
PHA
0.1
0.1
0.0
0.1
0.1
-0.0
1936
SLA
0.0
0.0
-0.0
0.0
0.1
-0.0
------
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------
------
------
------
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------
CAREER
0.6
0.8
-0.2
0.5
0.6
-0.0
Component 3
Component 4
Combined
Season
Team
eWins
eLoss
eWins
eLoss
eWins
eLoss
Net Wins
1926
PIT
0.1
0.1
0.1
0.1
0.2
0.1
0.1
1927
PIT
0.1
0.3
0.2
0.3
0.3
0.6
-0.3
1928
-
-
-
-
-
-
-
-
1929
-
-
-
-
-
-
-
-
1930
PHA
0.8
2.0
4.9
4.4
5.7
6.5
-0.8
1931
PHA
1.1
2.8
4.8
3.8
5.9
6.6
-0.7
1932
PHA
2.2
3.5
7.0
6.6
9.2
10.1
-0.9
1933
PHA
1.3
2.6
5.7
3.7
7.0
6.3
0.7
1934
PHA
0.8
1.9
4.1
3.3
5.0
5.2
-0.3
1935
PHA
0.8
1.6
4.5
3.9
5.3
5.4
-0.1
1936
SLA
0.3
1.4
2.1
1.6
2.4
2.9
-0.6
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CAREER
7.4
16.2
33.5
27.6
40.9
43.8
-2.9
Component 5
Component 6
Component 7
Season
Team
eWins
eLoss
Net Wins
eWins
eLoss
Net Wins
eWins
eLoss
Net Wins
1926
PIT
0.0
0.0
-0.0
0.0
0.0
0.0
0.0
0.0
-0.0
1927
PIT
0.1
0.1
0.0
0.0
0.0
-0.0
0.0
0.0
-0.0
1928
-
-
-
-
-
-
-
-
-
-
1929
-
-
-
-
-
-
-
-
-
-
1930
PHA
1.3
1.4
-0.1
0.1
0.1
0.0
0.0
0.0
0.0
1931
PHA
1.4
1.2
0.2
0.1
0.1
0.0
0.0
0.0
-0.0
1932
PHA
1.6
1.7
-0.1
0.1
0.2
-0.0
0.0
0.1
-0.1
1933
PHA
1.6
1.6
-0.1
0.1
0.2
-0.0
0.0
0.0
-0.0
1934
PHA
1.2
1.2
-0.0
0.1
0.2
-0.1
0.1
0.0
0.1
1935
PHA
1.2
1.2
0.1
0.1
0.1
0.0
0.0
0.0
0.0
1936
SLA
0.6
0.6
-0.1
0.0
0.1
-0.0
0.0
0.0
-0.0
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------
------
------
------
------
------
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CAREER
9.0
9.1
-0.0
0.8
0.9
-0.1
0.2
0.2
0.0
Contextual Adjustments
Context Multipliers
Win Adjustments
Season
Team
Inter-Game
Intra-Game
Combined
Inter-Game
Intra-Game
1926
PIT
0.05
1.21
0.06
0.127
-0.130
1927
PIT
0.39
1.25
0.49
-0.024
0.073
1928
-
-
-
-
-
-
1929
-
-
-
-
-
-
1930
PHA
0.95
0.98
0.93
-0.018
0.029
1931
PHA
0.90
1.28
1.15
0.023
0.035
1932
PHA
1.06
0.90
0.95
-0.031
0.005
1933
PHA
1.06
0.96
1.02
-0.006
0.018
1934
PHA
0.98
0.99
0.97
-0.025
0.016
1935
PHA
1.03
0.86
0.89
-0.007
0.020
1936
SLA
0.94
1.20
1.13
-0.040
-0.012
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CAREER
0.99
1.00
0.99
-0.013
0.018
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