How to read this player page

The big number is his career NUT, his total production against league average, with its letter grade. This season's NUT sits just below it, followed by his season and career lines, recent form over 7, 14 and 30 days, game logs, and percentile ranks against every qualified player. NUT is built on the advanced hitting and pitching stats analysts trust, with defense left out, so the number reflects what the player controls.

Ken Heintzelman 2026 Season · PHI

Ken Heintzelman played in the majors from 1937 to 1952. His career NUT is -1.5, #5,595 of 7,125 pitchers since 1876, and his best season by NUT was 1952 (+0.6). NUT is one number for production against league average: 0.0 is average, and every season is graded against its own league.

Career: 77-98, 3.93 ERA, 564 K in 1501.2 IP.

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Ken Heintzelman Career Stats & NUT | Baseball NUT

Ken Heintzelman

#27

P · PHI

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DWeak

-1.5Career NUT

+1.5 to Average

Career

3.93ERA1.45WHIP77W564K1501.2IP10SV

Career · season grades

R/L · 6' 0", 185 lb · b. Oct 14, 1915 · Peruque, MO · Signed Undrafted FA, 1937

Player Overview

Year by Year


1937	21	PIT	—	1	0	2.00	1	1	1	0	0	0	34	9.0	6	2	3	1	4	1.00
1938	22	PIT	—	0	0	9.00	1	0	0	0	1	0	9	2.0	1	2	3	0	1	2.00
1939	23	PIT	+0.0	1	1	5.05	17	2	1	1	12	0	161	35.2	35	20	18	0	18	1.49
1940	24	PIT	+0.5	8	8	4.47	39	16	5	2	12	3	742	165.0	193	82	65	4	71	1.56
1941	25	PIT	+0.3	11	11	3.44	35	24	13	2	4	0	853	196.0	206	75	83	1	81	1.47
1942	26	PIT	-1.2	8	11	4.57	27	18	5	3	4	0	581	130.0	143	66	63	0	39	1.58
1946	30	PIT	-0.9	8	12	3.77	32	24	6	2	4	1	708	157.2	165	66	86	0	57	1.59
1947	31	PIT	—	0	0	20.25	2	1	0	0	0	0	28	4.0	9	9	6	0	2	3.75
1947	31	PHI	-0.2	7	10	4.04	24	19	8	0	3	1	571	136.0	144	61	46	2	55	1.40
1947	31	TOT	-0.6	7	10	4.50	26	20	8	0	3	1	599	140.0	153	70	52	2	57	1.46
1948	32	PHI	+0.2	6	11	4.29	27	16	5	2	3	2	536	130.0	117	62	45	1	57	1.25
1949	33	PHI	+0.0	17	10	3.02	33	32	15	5	0	0	1041	250.0	239	84	93	1	65	1.33
1950	34	PHI	+0.1	3	9	4.09	23	17	4	1	3	0	547	125.1	122	57	54	0	39	1.40
1951	35	PHI	-0.5	6	12	4.18	35	12	3	0	13	2	516	118.1	119	55	53	4	55	1.45
1952	36	PHI	+0.6	1	3	3.16	23	1	0	0	13	1	170	42.2	41	15	12	0	20	1.24
Career	—	13 yrs	-1.5	77	98	3.93	319	183	66	18	72	10	6497	1501.2	1540	656	630	14	564	1.45

Stat definitions →

NUT Breakdown

K Ability

HR Prevention

Walk Avoidance

What's driving Heintzelman's career NUT of -1.5

Slice size = share of total NUT. K Ability = Strikeouts · HR Prevention = HR allowed · Walk Avoidance = BB + HBP.

Career NUT Trend

0.6

3940414246474849505152

NUT by Season

+0.0

+0.5

+0.3

-1.2

-0.9

-0.6

+0.2

+0.0

+0.1

-0.5

+0.6

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