What years did Jeff Karstens play?

Jeff Karstens played in Major League Baseball from 2006 to 2012.

Was Jeff Karstens a pitcher?

Yes. Jeff Karstens pitched in the major leagues, recording 26 wins and 330 strikeouts.

How many home runs did Jeff Karstens hit?

Jeff Karstens hit 0 career home runs with 13 hits.

What was Jeff Karstens's career batting average?

Jeff Karstens batted .090 over his career, with 13 hits in 145 at bats.

How many RBI did Jeff Karstens have?

Jeff Karstens drove in 4 runs in his career.

What was Jeff Karstens's career ERA?

Jeff Karstens finished with a 4.44 career ERA, going 26-40 with 330 strikeouts.

Jeff Karstens

Pitcher · Career Stats, Bio & Records (2006-2012)

Jeff Karstens was a pitcher who played in Major League Baseball from 2006 to 2012 for the New York Yankees and the Pittsburgh Pirates, a span of 7 seasons. Across 138 career appearances, he went 26-40 with a 4.44 ERA and 330 strikeouts.

W (Wins):: Games credited to a pitcher whose team took a lead it never surrendered while he was the pitcher of record.
ERA (Earned Run Average):: Earned runs allowed per nine innings pitched: (ER × 9) ÷ IP. The primary measure of pitching effectiveness.
SO (Strikeouts):: For a batter, times retired on a third strike; for a pitcher, batters retired on a third strike.
WHIP (Walks and Hits per Inning Pitched):: Baserunners allowed per inning: (BB + H) ÷ IP. Under 1.00 is elite.

Data updated September 9, 2026

W–L 26–40

ERA 4.44

WHIP 1.33

SO 330

Pitcher PIV -5984.2

Position: Pitcher
Bats / Throws: R / R
Height / Weight: 6'3" / 185 lb
Born: 9/24/1982 in San Diego, CA, USA
MLB Debut: 2006-08-22
Last Game: 2012-10-01

Full name: Jeffrey Wayne Karstens

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Career Pitching Statistics

Jeff Karstens — Career Pitching Statistics
W	L	G	GS	CG	SHO	SV	IP	H	ER	HR	BB	SO	ERA	Pitcher PIV
26	40	138	91	2	2	0	592.3	636	292	80	153	330	4.44	-5984.2

Career ERA 4.44 vs. league average 4.24 across their career seasons — near league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Jeff Karstens Stats, Bio & Career Records
Year	Team	Lg	W	L	G	GS	CG	SHO	IP	H	ER	BB	SO	ERA	Lg ERA	Pitcher PIV
2006	NYA	AL	2	1	8	6	0	0	42.7	40	18	11	16	3.80	4.53 (+16%)	-577.9
2007	NYA	AL	1	4	7	3	0	0	14.7	27	18	9	5	11.05	4.47 (-147%)	-1272.7
2008	PIT	NL	2	6	9	9	1	1	51.3	56	23	13	23	4.03	4.32 (+7%)	-570.5
2009	PIT	NL	4	6	39	13	0	0	108.0	115	65	45	52	5.42	4.32 (-25%)	-1518.4
2010	PIT	NL	3	10	26	19	0	0	122.7	146	67	27	72	4.92	4.08 (-21%)	-2256.0
2011	PIT	NL	9	9	30	26	1	1	162.3	163	61	33	96	3.38	3.94 (+14%)	-1403.4
2012	PIT	NL	5	4	19	15	0	0	90.7	89	40	15	66	3.97	4.01 (+1%)	1614.7
Career · 7 seasons			26	40	138	91	2	2	592.1	636	292	153	330	4.44	—	-5,984

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Career Batting Statistics

Jeff Karstens — Career Batting Statistics
G	AB	R	H	2B	3B	HR	RBI	SB	BB	SO	AVG	OBP	SLG	OPS	PIV
138	145	10	13	1	0	0	4	0	8	79	.090	.143	.097	.239	-461

Career AVG .090 vs. league average .262 across their career seasons — 65.7% below league average.

Career OBP .143 vs. league average .329 across their career seasons — 56.6% below league average.

Career SLG .097 vs. league average .414 across their career seasons — 76.7% below league average.

Career OPS .239 vs. league average .743 across their career seasons — 67.8% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Jeff Karstens — Season-by-Season Batting
Year	Team	Lg	G	AB	R	H	2B	RBI	BB	SO	AVG	Lg AVG	Lg OBP	Lg SLG	Lg OPS	PIV
2006	NYA	AL	8	0	0	0	0	0	0	0	.000	—	—	—	—	0.0
2007	NYA	AL	7	0	0	0	0	0	0	0	.000	—	—	—	—	0.0
2008	PIT	NL	9	14	3	2	0	0	2	8	.143	—	—	—	—	0.0
2009	PIT	NL	39	22	2	1	0	0	2	12	.045	—	—	—	—	0.0
2010	PIT	NL	26	33	0	2	0	0	1	16	.061	—	—	—	—	0.0
2011	PIT	NL	30	48	2	5	1	2	3	28	.104	—	—	—	—	-461.1
2012	PIT	NL	19	28	3	3	0	2	0	15	.107	—	—	—	—	0.0
Career · 7 seasons			138	145	10	13	1	4	8	79	.090	—	—	—	—	-461

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Game Log & Splits

View full game log (276 games) →

Per-game data from Retrosheet (regular season, through 2025).

Batting — Home / Away

Jeff Karstens — Batting — Home / Away
Split	G	AB	R	H	HR	RBI	AVG
Home	66	67	5	5	0	3	.075
Away	72	78	5	8	0	1	.103

Pitching — Home / Away

Jeff Karstens — Pitching — Home / Away
Split	G	IP	H	ER	BB	SO	ERA
Home	66	282.1	299	135	67	143	4.30
Away	72	310.0	337	157	86	187	4.56

Last 10 Games — Batting

Jeff Karstens — Last 10 Games — Batting
Date	Tm	Opp	Res	AB	R	H	RBI	SO
2012-10-01	PIT	ATL	W	0	0	0	0	0
2012-09-26	PIT	NYN	L	0	0	0	0	0
2012-09-24	PIT	NYN	L	0	0	0	0	0
2012-09-19	PIT	MIL	L	0	0	0	0	0
2012-08-31	PIT	MIL	L	0	0	0	0	0
2012-08-25	PIT	MIL	W	3	1	1	1	1
2012-08-19	PIT	STL	W	1	1	0	0	1
2012-08-13	PIT	LAD	L	2	0	0	0	0
2012-08-07	PIT	AZ	L	2	0	0	0	2
2012-08-01	PIT	CHC	W	2	0	0	0	2

Last 10 Games — Pitching

Jeff Karstens — Last 10 Games — Pitching
Date	Tm	Opp	Dec	IP	H	R	ER	BB	SO	HR
2012-10-01	PIT	ATL	—	1.0	0	0	0	0	1	0
2012-09-26	PIT	NYN	—	2.0	2	1	1	0	2	0
2012-09-24	PIT	NYN	—	1.1	2	2	2	0	2	1
2012-09-19	PIT	MIL	—	3.0	2	1	1	0	2	0
2012-08-31	PIT	MIL	L	0.1	5	4	4	0	1	1
2012-08-25	PIT	MIL	W	7.0	7	0	0	0	4	0
2012-08-19	PIT	STL	—	7.0	2	2	2	1	4	0
2012-08-13	PIT	LAD	L	7.0	7	4	4	1	4	1
2012-08-07	PIT	AZ	—	6.0	8	3	3	0	4	1
2012-08-01	PIT	CHC	W	5.0	3	1	1	1	4	1

Fielding Statistics

Career Fielding Totals by Position

Jeff Karstens — Career Fielding Totals by Position
Position	G	GS	PO	A	E	DP
P	138	91	42	67	6	5

Season-by-Season Fielding

Jeff Karstens — Season-by-Season Fielding
Year	Team	Pos	G	GS	PO	A	E	DP
2006	NYA	P	8	6	4	6	1	1
2007	NYA	P	7	3	0	1	0	0
2008	PIT	P	9	9	3	6	2	1
2009	PIT	P	39	13	4	12	0	0
2010	PIT	P	26	19	12	15	0	1
2011	PIT	P	30	26	15	19	2	2
2012	PIT	P	19	15	4	8	1	0

Career Games by Position

Position Diamond

Circle size = games played at each position.

Jeff Karstens — Career Games by Position
Position	Games
Pitcher	138

Awards & Honors

Jeff Karstens — Awards & Honors
Year	Award	Notes
2011	Player of the Week	Week of 2011-07-17

Salary History

Jeff Karstens — Salary History
Year	Team	League	Salary
2012	PIT	NL	$3,100,000
2011	PIT	NL	$1,100,000
2009	PIT	NL	$401,500
2008	NYA	AL	$393,300
2007	NYA	AL	$389,495
Total Career Earnings			$5,384,295

College History

Jeff Karstens — College History
School Name	City	State	Years Attended
Grossmont College	El Cajon	CA	2001, 2002
Texas Tech University	Lubbock	TX	2003

Most Similar Players

Career comps based on counting + rate stats and primary position. Score is relative — closest peer anchors at ~98%.

Career Spans

Jeff Karstens (highlighted) compared to peers across the same era.

Frequently Asked Questions about Jeff Karstens

What years did Jeff Karstens play?: Jeff Karstens played in Major League Baseball from 2006 to 2012.
Was Jeff Karstens a pitcher?: Yes. Jeff Karstens pitched in the major leagues, recording 26 wins and 330 strikeouts.
How many home runs did Jeff Karstens hit?: Jeff Karstens hit 0 career home runs with 13 hits.
What was Jeff Karstens's career batting average?: Jeff Karstens batted .090 over his career, with 13 hits in 145 at bats.
How many RBI did Jeff Karstens have?: Jeff Karstens drove in 4 runs in his career.
What was Jeff Karstens's career ERA?: Jeff Karstens finished with a 4.44 career ERA, going 26-40 with 330 strikeouts.