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
1
.667
7
4
3
0
0
44.2
9
7
36
11
16
0
0
1.41
223
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
99
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
12
4
1
SP
6
3
.667
18
11
8
1
1
101.0
34
30
93
4
38
35
1
1
1
247
2.67
140
162 Game Average
14
7
.667
42
26
19
2
2
236.2
80
70
218
15
89
82
2
4
2
933
2.67
140



Advanced Pitching
Year
Team Lg
Age
Pos
IP
WHIP
Lg
K%
Lg
BB%
Lg
K/BB
Lg
HR%
Lg
CBE
NAL
21
SP
44.2
1.05
1.20
9.0%
11.9%
6.2%
7.0%
1.45
1.69
CBE
22
SP
51.2
1.41
1.26
7.1%
11.9%
10.7%
8.3%
0.67
1.59
1.3%
0.5%
CBE
NAL
24
RP
4.0
1.75
1.57
11.8%
11.9%
11.8%
9.6%
1.00
1.24
0.0%
0.9%
CBE
NAL
25
RP
0.2
6.00
1.59
16.7%
12.7%
16.7%
9.3%
1.00
1.36
16.7%
0.9%
4
1
SP
101.0
1.30
1.25
8.3%
12.2%
9.0%
7.6%
0.92
1.62
1.6%
0.7%



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
7
9
36
11
16
0
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
18
247
215
34
93
12
0
4
2
38
35
0
1
4
0
.265
.350
.377
.727

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