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.

Casey Janssen 2026 Season · Acereros del Norte

Casey Janssen is a free agent pitcher. His career NUT is +2.4, #899 of 7,125 pitchers since 1876, and his best season by NUT was 2011 (+1.0). NUT is one number for production against league average: 0.0 is average, and every season is graded against its own league.

Career: 31-29, 3.63 ERA, 395 K in 533.0 IP.

NUT leaderboard · What is NUT?

Casey Janssen Career Stats & NUT | Baseball NUT

Casey Janssen

#44

P · Free agent

Compare

BGood

+2.4Career NUT

+5.6 to Great

Career

3.63ERA1.21WHIP31W395K533.0IP90SV

Career · season grades

R/R · 6' 4", 210 lb · b. Sep 17, 1981 · Orange, CA · Draft 2003 (49th Rd, #1435)

Player Overview

Year by Year


2006	24	TOR	-0.2	6	10	5.07	19	17	1	0	0	0	0	407	94.0	103	53	21	7	44	1.32
2007	25	TOR	+0.5	2	3	2.35	70	0	21	6	24	5	11	297	72.2	67	19	20	3	39	1.20
2009	27	TOR	-0.2	2	4	5.85	21	5	5	1	2	0	1	192	40.0	59	26	14	2	24	1.83
2010	28	TOR	+0.2	5	2	3.67	56	0	16	0	2	0	0	298	68.2	74	28	21	4	63	1.38
2011	29	TOR	+1.0	6	0	2.26	55	0	11	2	7	2	4	223	55.2	47	14	14	2	53	1.10
2012	30	TOR	+0.7	1	1	2.54	62	0	47	22	1	3	25	242	63.2	44	18	11	3	67	0.86
2013	31	TOR	+0.7	4	1	2.56	56	0	44	34	1	2	36	210	52.2	39	15	13	2	50	0.99
2014	32	TOR	-0.2	3	3	3.94	50	0	42	25	0	5	30	192	45.2	47	20	7	1	28	1.18
2015	33	WSH	-0.1	2	5	4.95	48	0	12	0	13	3	3	166	40.0	38	22	8	1	27	1.15
Career	—	9 yrs	+2.4	31	29	3.63	437	22	199	90	50	20	110	2227	533.0	518	215	129	25	395	1.21

Stat definitions →

NUT Breakdown

K Ability

HR Prevention

Walk Avoidance

What's driving Janssen'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

060709101112131415

NUT by Season

-0.2

+0.5

-0.2

+0.2

+1.0

+0.7

-0.2

-0.1

Awards

2006Blue Jays Rookie of the Year

2012Blue Jays Pitcher of the Year

2013Blue Jays Pitcher of the Year

Minor League

Year	Age	Lv	W	L	ERA	G	GS	GF	HLD	BS	SVO	BF	IP	H	ER	BB	HBP	SO	WHIP
2005	23	A	4	0	1.37	7	7	0	0	0	0	163	46.0	27	7	4	1	38	0.67
2005	23	A+	6	1	2.26	10	10	0	0	0	0	229	59.2	46	15	12	2	51	0.97
2005	23	AA	3	3	2.93	9	9	0	0	0	0	177	43.0	49	14	4	2	47	1.23
2006	24	AAA	1	5	4.85	9	9	0	0	0	0	178	42.2	47	23	8	2	32	1.29
2009	27	A+	0	0	0.69	4	3	0	0	0	0	46	13.0	6	1	2	0	10	0.62
2009	27	AA	1	0	2.40	6	1	0	0	0	0	61	15.0	12	4	5	0	12	1.13
2009	27	AAA	0	0	5.40	7	0	2	1	0	0	25	6.2	4	4	1	0	7	0.75
2011	29	AA	0	0	0.00	5	0	0	0	0	0	17	5.0	1	0	1	0	7	0.40
2011	29	AAA	0	0	0.00	1	0	0	1	0	0	7	2.0	1	0	0	0	3	0.50
2014	32	A+	0	0	0.00	1	1	0	0	0	0	4	1.0	1	0	0	0	1	1.00
2014	32	AA	0	0	0.00	3	2	1	0	0	0	12	3.0	3	0	0	0	2	1.00
2015	33	A+	0	0	4.50	2	1	0	0	1	1	10	2.0	3	1	0	0	1	1.50
2015	33	AA	0	0	2.45	4	1	0	1	0	0	14	3.2	1	1	1	0	0	0.55
2016	34	AAA	0	0	2.35	6	0	2	1	0	0	30	7.2	4	2	3	0	4	0.91
2017	35	AAA	0	3	4.30	15	0	1	7	1	1	65	14.2	18	7	4	0	21	1.50

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