George Jefferson - Seamheads Negro Leagues Database

George Jefferson



George Leo Jefferson
(Jeff)

Born: August 8, 1922 in Boley, OK
Died: September 21, 1985 in Erie, PA
          (63 years old)

Bats: R
Throws: R
Ht: 6'2"
Wt: 197
Biographical
Wikipedia BR Bullpen SABR Bio Project SABR Index
Photos & Videos
Google Photos / + Baseball Yahoo Photos / + Baseball MLB.com YouTube

Notes:


• Relatives: Willie Jefferson (Brother)


Pitching

Multi-Stint Seasons:

Glossary
Basic Pitching
Year
Team Lg
Age
Pos
W
L
W%
G
GS
GF
CG
SHO
SV
IP
R
ER
H
HR
BB
K
WP
BK
HBP
BF
ERA
ERA+
CBE
NAL
21
SP
2
3
.400
9
5
4
0
0
60.2
17
12
50
1
8
27
0
0
0
231
1.78
188
CBE
22
SP
4
2
.667
9
7
5
1
1
51.2
21
20
49
3
24
16
1
1
1
224
3.48
104
CBE
NAL
24
RP
0
0
1
0
0
0
0
4.0
1
0
5
0
2
2
0
0
0
17
0.00
CBE
NAL
25
RP
0
0
1
0
0
0
0
0.2
3
3
3
1
1
1
0
0
0
6
40.50
13
4
1
SP
6
5
.545
20
12
9
1
1
117.0
42
35
107
5
35
46
1
1
1
478
2.69
143
162 Game Average
13
11
.545
43
26
19
2
2
248.2
89
74
227
11
74
98
2
2
2
1016
2.69
143



Advanced Pitching
Year
Team Lg
Age
Pos
IP
WHIP
Lg
K%
Lg
BB%
Lg
K/BB
Lg
HR%
Lg
CBE
NAL
21
SP
60.2
0.96
1.27
11.7%
12.7%
3.5%
7.5%
3.38
1.70
0.4%
0.3%
CBE
22
SP
51.2
1.41
1.30
7.1%
11.8%
10.7%
8.5%
0.67
1.53
1.3%
0.6%
CBE
NAL
24
RP
4.0
1.75
1.60
11.8%
11.8%
11.8%
9.5%
1.00
1.25
0.0%
0.9%
CBE
NAL
25
RP
0.2
6.00
1.62
16.7%
12.6%
16.7%
9.3%
1.00
1.36
16.7%
0.9%
4
1
SP
117.0
1.21
1.30
9.6%
12.5%
7.3%
7.8%
1.31
1.61
1.0%
0.5%



Opponent's Batting
Year
Team Lg
Age
Pos
G
PA
AB
R
H
2B
3B
HR
SB
CS
BB
SO
IBB
HBP
SH
SF
DP
BA
OBP
SLG
OPS
CBE
NAL
21
SP
9
231
220
17
50
6
0
1
2
0
8
27
0
0
3
4
.227
.254
.268
.523
CBE
22
SP
9
224
195
21
49
11
0
3
2
24
16
0
1
4
0
.251
.336
.354
.690
CBE
NAL
24
RP
1
17
15
1
5
0
0
0
0
2
2
0
0
0
0
.333
.412
.333
.745
CBE
NAL
25
RP
1
6
5
3
3
1
0
1
0
1
1
0
0
0
0
.600
.667
1.400
2.067
4
1
SP
20
478
435
42
107
18
0
5
4
0
35
46
0
1
7
4
.246
.304
.322
.625

If you have any questions regarding Negro Leagues statistical or biographical data, please contact gary@seamheads.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, 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