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

About Graph

Biographical
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Pitching

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+
1940	HG	NN2	25	RP	2	0	1.000	4	1		1	1	0	18.0	8	8	21		4	6	0		0		4.00	123
1948	NBY	NN2	33	SP	0	0		2	1		0	0	0	5.1	3	2	4	1	3	1	0		0	24	3.38	105
2	2			RP	2	0	1.000	6	2		1	1	0	23.1	11	10	25	1	7	7	0		0	24	3.86	118
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	118

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+
1	Homestead Grays			SP	2	0	1.000	4	1		1	1	0	18.0	8	8	21		4	6	0		0		4.00	123
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	105

Advanced Pitching

Year	Team	Lg	Age	Pos	IP	WHIP	Lg	K%	Lg	BB%	Lg	K/BB	Lg	HR%	Lg
1940	HG	NN2	25	RP	18.0	1.39	1.51	7.8%	11.2%	5.2%	9.1%	1.50	1.22
1948	NBY	NN2	33	SP	5.1	1.31	1.38	4.2%	13.5%	12.5%	8.5%	0.33	1.59	4.2%	0.7%
2	2			RP	23.1	1.37	1.48	6.9%	11.7%	6.9%	9.0%	1.00	1.31	4.2%	0.7%

Year	Team	Lg	Age	Pos	IP	WHIP	Lg	K%	Lg	BB%	Lg	K/BB	Lg	HR%	Lg
1	Homestead Grays			SP	18.0	1.39	1.51	7.8%	11.2%	5.2%	9.1%	1.50	1.22
1	New York Black Yankees			RP	5.1	1.31	1.38	4.2%	13.5%	12.5%	8.5%	0.33	1.59	4.2%	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
1940	HG	NN2	25	RP	4			8	21						4	6		0
1948	NBY	NN2	33	SP	2	24	20	3	4	0	0	1	0		3	1		0	1		0	.200	.304	.350	.654
2	2			RP	6	24	20	11	25	0	0	1	0		7	7		0	1		0	.200	.304	.350	.654

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
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..

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.

Logo by Gary Cieradkowski

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

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Sonny Boy Jeffries

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