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.

Jason Grimsley 2026 Season · ARI

Jason Grimsley played in the majors from 1989 to 2006. His career NUT is -1.0, #5,050 of 7,125 pitchers since 1876, and his best season by NUT was 2002 (+0.5). NUT is one number for production against league average: 0.0 is average, and every season is graded against its own league.

Career: 42-58, 4.77 ERA, 622 K in 936.2 IP.

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Jason Grimsley Career Stats & NUT | Baseball NUT

Jason Grimsley

#38

P · ARI

Compare

DWeak

-1.0Career NUT

+1 to Average

Career

4.77ERA1.55WHIP42W622K936.2IP4SV

Career · season grades

R/R · 6' 3", 205 lb · b. Aug 7, 1967 · Cleveland, TX · Draft 1985 (10th Rd, #252)

Player Overview

Year by Year


1989	21	PHI	—	1	3	5.89	4	4	0	0	0	0	0	0	0	91	18.1	19	12	19	0	7	2.07
1990	22	PHI	-0.1	3	2	3.30	11	11	0	0	0	0	0	0	0	255	57.1	47	21	43	2	41	1.57
1991	23	PHI	-0.4	1	7	4.87	12	12	0	0	0	0	0	0	0	272	61.0	54	33	41	3	42	1.56
1993	25	CLE	+0.0	3	4	5.31	10	6	0	0	1	0	0	0	0	194	42.1	52	25	20	1	27	1.70
1994	26	CLE	+0.2	5	2	4.57	14	13	1	0	0	0	0	0	0	368	82.2	91	42	34	6	59	1.51
1995	27	CLE	-0.6	0	0	6.09	15	2	0	0	2	1	0	0	1	165	34.0	37	23	32	2	25	2.03
1996	28	LAA	-1.0	5	7	6.84	35	20	2	1	4	0	0	0	0	620	130.1	150	99	74	13	82	1.72
1999	31	NYY	-0.1	7	2	3.60	55	0	0	0	25	1	8	3	4	336	75.0	66	30	40	4	49	1.41
2000	32	NYY	-0.1	3	2	5.04	63	4	0	0	18	1	4	3	4	428	96.1	100	54	42	5	53	1.47
2001	33	KC	+0.4	1	5	3.02	73	0	0	0	24	0	26	7	7	327	80.1	71	27	28	2	61	1.23
2002	34	KC	+0.5	4	7	3.91	70	0	0	0	26	1	12	2	3	310	71.1	64	31	37	1	59	1.42
2003	35	KC	+0.2	2	6	5.16	76	0	0	0	5	0	28	7	7	346	75.0	88	43	36	5	58	1.65
2004	36	KC	+0.1	3	3	3.38	32	0	0	0	4	0	5	3	3	118	26.2	24	10	15	1	18	1.46
2004	36	BAL	-0.1	2	4	4.21	41	0	0	0	3	0	11	6	6	167	36.1	37	17	20	2	21	1.57
2004	36	TOT	+0.0	5	7	3.86	73	0	0	0	7	0	16	9	9	285	63.0	61	27	35	3	39	1.52
2005	37	BAL	—	1	2	5.73	22	0	0	0	9	0	3	3	3	93	22.0	24	14	9	0	10	1.50
2006	38	ARI	-0.2	1	2	4.88	19	0	0	0	6	0	0	0	0	118	27.2	30	15	8	0	10	1.37
Career	—	15 yrs	-1.0	42	58	4.77	552	72	3	1	127	4	97	34	38	4208	936.2	954	496	498	47	622	1.55

Stat definitions →

NUT Breakdown

K Ability

HR Prevention

Walk Avoidance

What's driving Grimsley's career NUT of -1

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

Career NUT Trend

0.5

90919394959699000102030406

NUT by Season

-0.1

-0.4

+0.0

+0.2

-0.6

-1.0

-0.1

+0.4

+0.5

+0.2

+0.0

-0.2

Awards

1999World Series Championship

2000World Series Champion*

Minor League

Year	Age	Lv	W	L	ERA	G	GS	CG	SHO	GF	SV	SVO	BF	IP	H	ER	BB	HBP	SO	WHIP
1988	20	A+	4	7	3.73	16	15	2	0	1	0	0	422	101.1	80	42	37	9	90	1.15
1988	20	AA	1	3	7.17	5	4	0	0	1	0	0	98	21.1	20	17	13	1	14	1.55
1989	21	AA	11	8	2.98	26	26	8	2	0	0	0	727	172.0	121	57	109	10	134	1.34
1990	22	AAA	8	5	3.93	22	22	0	0	0	0	0	563	128.1	111	56	78	4	99	1.47
1991	23	AAA	2	3	4.35	9	9	0	0	0	0	0	231	51.2	48	25	37	2	43	1.65
1992	24	AAA	8	7	5.05	26	20	0	0	1	0	0	565	124.2	152	70	55	9	90	1.66
1993	25	AAA	6	6	3.39	28	19	3	1	5	0	0	579	135.1	138	51	49	1	102	1.38
1994	26	AAA	7	0	3.42	10	10	2	0	0	0	0	291	71.0	58	27	17	3	60	1.06
1995	27	AAA	5	3	2.91	10	10	2	0	0	0	0	285	68.0	61	22	19	3	40	1.18
1996	28	AAA	2	0	1.20	2	2	1	0	0	0	0	55	15.0	8	2	3	1	11	0.73
1997	29	AAA	1	5	6.68	7	6	0	0	0	0	0	156	31.0	36	23	29	3	22	2.10
1997	29	AAA	5	10	5.70	36	10	0	0	18	4	4	397	85.1	96	54	43	4	65	1.63
1997	29	AAA	6	15	5.96	43	16	0	0	18	4	4	553	116.1	132	77	72	7	87	1.75
1998	30	AAA	6	3	3.76	52	0	0	0	8	0	0	393	88.2	76	37	57	6	68	1.50
2002	34	AA	0	0	9.00	1	1	0	0	0	0	0	5	1.0	1	1	1	0	0	2.00
2005	37	AA	2	0	1.13	8	2	0	0	1	0	0	32	8.0	4	1	4	0	4	1.00

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