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.

Clayton Mortensen 2026 Season · New Orleans Baby Cakes

Clayton Mortensen played in the majors from 2009 to 2013. His career NUT is -2.4, #6,179 of 7,125 pitchers since 1876, and his best season by NUT was 2013 (-0.3). NUT is one number for production against league average: 0.0 is average, and every season is graded against its own league.

Career: 6-11, 4.68 ERA, 112 K in 167.1 IP.

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Clayton Mortensen Career Stats & NUT | Baseball NUT

Clayton Mortensen

#59

P · New Orleans Baby Cakes (MIA)

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-2.4Career NUT

+0.4 to Weak

Career

4.68ERA1.44WHIP6W112K167.1IP

Career · season grades

R/R · 6' 4", 185 lb · b. Apr 10, 1985 · Rexburg, ID · Draft 2005 (25th Rd, #748)

Player Overview

Year by Year


2009	24	STL	—	0	0	6.00	1	0	1	0	16	3.0	5	2	1	1	2	2.00
2009	24	OAK	-0.6	2	4	7.81	6	6	0	0	133	27.2	37	24	12	2	11	1.77
2009	24	TOT	-0.7	2	4	7.63	7	6	1	0	149	30.2	42	26	13	3	13	1.79
2010	25	OAK	—	0	0	4.50	1	1	0	0	26	6.0	6	3	2	0	7	1.33
2011	26	COL	-1.0	2	4	3.86	16	6	6	0	244	58.1	55	25	24	2	30	1.35
2012	27	BOS	-0.4	1	1	3.21	26	0	8	1	173	42.0	32	15	19	1	41	1.21
2013	28	BOS	-0.3	1	2	5.34	24	0	7	0	141	30.1	32	18	16	3	21	1.58
Career	—	5 yrs	-2.4	6	11	4.68	74	13	22	1	733	167.1	167	87	74	9	112	1.44

Stat definitions →

NUT Breakdown

K Ability

HR Prevention

Walk Avoidance

What's driving Mortensen's career NUT of -2.4

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

Career NUT Trend

-0.3

09111213

NUT by Season

-0.7

-1.0

-0.4

-0.3

Awards

2010PCL Mid-Season All-Star · MiLB.com Organization All-Star

2013World Series Champion*

2014PCL Pitcher of the Week

Minor League

Year	Age	Lv	W	L	ERA	G	GS	CG	GF	SV	HLD	BS	SVO	BF	IP	H	ER	BB	HBP	SO	WHIP
2007	22	A	0	2	3.12	10	10	0	0	0	0	0	0	172	40.1	44	14	8	4	45	1.29
2008	23	AA	3	4	4.22	11	11	0	0	0	0	0	0	258	59.2	59	28	22	4	48	1.36
2008	23	AAA	5	6	5.51	15	14	0	0	0	0	0	0	361	80.0	87	49	42	6	57	1.61
2009	24	AAA	7	6	4.37	17	17	1	0	0	0	0	0	443	105.0	103	51	34	4	82	1.30
2009	24	AAA	2	2	4.45	6	6	0	0	0	0	0	0	145	32.1	40	16	14	0	18	1.67
2009	24	AAA	9	8	4.39	23	23	1	0	0	0	0	0	588	137.1	143	67	48	4	100	1.39
2010	25	AAA	13	6	4.25	26	26	0	0	0	0	0	0	688	165.1	161	78	53	2	112	1.29
2011	26	AAA	2	8	9.42	15	15	0	0	0	0	0	0	317	64.0	104	67	29	2	54	2.08
2012	27	AA	0	0	18.00	1	0	0	0	0	0	0	0	7	1.0	3	2	1	0	0	4.00
2012	27	AAA	5	3	1.91	24	0	0	6	2	6	1	3	151	37.2	21	8	15	4	36	0.96
2013	28	AAA	3	0	2.47	14	6	0	1	0	1	1	1	178	43.2	34	12	20	2	39	1.24
2013	28	AAA	1	0	4.50	1	1	0	0	0	0	0	0	24	6.0	6	3	3	0	2	1.50
2013	28	AAA	4	0	2.72	15	7	0	1	0	1	1	1	202	49.2	40	15	23	2	41	1.27
2014	29	AAA	5	4	4.74	16	15	0	1	0	0	0	0	335	76.0	86	40	22	3	62	1.42
2015	30	AAA	7	9	5.40	24	17	0	1	0	1	1	1	476	106.2	104	64	59	4	81	1.53
2016	31	AAA	3	5	5.65	32	3	0	10	0	1	1	1	292	63.2	75	40	30	3	70	1.65
2017	32	AA	2	0	2.14	19	0	0	13	6	2	0	6	80	21.0	10	5	9	1	22	0.90
2017	32	AAA	4	1	7.80	22	0	0	9	1	0	3	4	145	30.0	29	26	22	3	39	1.70

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