Sonny Boy Jeffries - Seamheads Negro Leagues Database

Sonny Boy Jeffries



Nathaniel Jeffries


Born: August 5, 1914 in Rochester, NY
Died: April 17, 1995 in Rochester, NY
          (80 years old)

Bats: R
Throws: R
Ht: 5'11"
Wt: 154
Biographical
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Photos & Videos
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Notes:




Pitching
Glossary
Basic Pitching
Team Lg Pos
HG
NN2
25
RP
2
0
1.000
4
1
1
1
0
18.0
8
8
21
4
6
0
0
4.00
121
NBY
NN2
33
SP
0
0
2
1
0
0
0
5.1
3
2
4
1
3
1
0
0
24
3.38
100
2
2
SP
2
0
1.000
6
2
1
1
0
23.1
11
10
25
1
7
7
0
0
24
3.86
115
162 Game Average
17
0
1.000
51
17
9
9
0
198.1
94
85
213
23
60
60
0
0
544
3.86
115
 
Team Lg Pos
1
Homestead Grays
SP
2
0
1.000
4
1
1
1
0
18.0
8
8
21
4
6
0
0
4.00
121
1
New York Black Yankees
RP
0
0
2
1
0
0
0
5.1
3
2
4
1
3
1
0
0
24
3.38
100



Advanced Pitching
Team Lg Pos Lg Lg Lg Lg Lg
HG
NN2
25
RP
18.0
1.39
1.49
7.8%
11.2%
5.2%
9.1%
1.50
1.24
NBY
NN2
33
SP
5.1
1.31
1.33
4.2%
13.6%
12.5%
8.4%
0.33
1.62
4.2%
0.7%
2
2
SP
23.1
1.37
1.46
6.9%
11.8%
6.9%
8.9%
1.00
1.32
4.2%
0.7%
 
Team Lg Pos Lg Lg Lg Lg Lg
1
Homestead Grays
SP
18.0
1.39
1.49
7.8%
11.2%
5.2%
9.1%
1.50
1.24
1
New York Black Yankees
RP
5.1
1.31
1.33
4.2%
13.6%
12.5%
8.4%
0.33
1.62
4.2%
0.7%



Opponent's Batting
Team Lg Pos
HG
NN2
25
RP
4
8
21
4
6
0
NBY
NN2
33
SP
2
24
20
3
4
0
0
1
0
3
1
0
1
0
.200
.304
.350
.654
2
2
SP
6
24
20
11
25
0
0
1
0
7
7
0
1
0
.200
.304
.350
.654
 
Team Lg Pos
1
Homestead Grays
SP
4
8
21
4
6
0
.000
.000
.000
.000
1
New York Black Yankees
RP
2
24
20
3
4
0
0
1
0
3
1
0
1
0
.200
.304
.350
.654

If you have any questions regarding Negro Leagues statistical or biographical data, please contact gary@seamheads.com. For any other questions/comments/suggestions, please contact the web developer at BaseballGauge@gmail.com.

All biographical data, copyright 2011-2018 Gary Ashwill.

Playing statistics for 1887-1922 and 1926-1938, as well as all Cuban League games (1902-1928) and Negro League vs. Major League games (1887-1944), copyright 2011-2018 Gary Ashwill.

Playing statistics for 1923 (except Negro League vs. Major League games), copyright 2011-2018 Patrick Rock.

Playing statistics for 1933 and 1943, copyright 2013-2018 Scott Simkus.

Playing statistics for 1924-1925, 1939-1942, and 1944-1946 Negro Leagues (not including Cuban League and Negro League vs. Major League games), copyright 2011-2018 Larry Lester, Wayne Stivers, Gary Ashwill.


Defensive Regression Analysis data used here was obtained with permission from Michael Humphreys, author of Wizardry

Win Shares are calculated using the formula in the book Win Shares by Bill James