Dan Haren career ERA

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3.75Career Regular Season

Dan Haren has a career ERA of 3.75 over 13 regular seasons.

• Best season on file: 3.07 in 2007.
• Most recent: 3.60 in 2015.

Average of 13 regular seasons, 2003 through 2015. Figures come from ESPN's box scores and were last read on September 22, 2026.

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Dan Haren career ERA, season by season

Season↓	Team↓	GP↓iGP: Games the player appeared in, however briefly.	W↓iW: Games in which this pitcher was credited with the win.	L↓iL: Games in which this pitcher was charged with the loss.	ERA↓iERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent.	IP↓iIP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs.	K↓iK: Batters this pitcher struck out.	BB↓iBB: Times the batter reached first base on four balls.	WHIP↓iWHIP: Walks and hits allowed per inning pitched — lower is better. Around 1.00 is elite.	SV↓iSV: Games finished by protecting a narrow lead to the last out.
2003	STL	14	3	7	5.08	72.2	43	22	1.46	0
2004	STL	14	3	3	4.50	46.0	32	17	1.35	0
2005	ATH	34	14	12	3.73	217.0	163	53	1.22	0
2006	ATH	34	14	13	4.12	223.0	176	45	1.21	0
2007	ATH	34	15	9	3.07	222.2	192	55	1.21	0
2008	ARI	33	16	8	3.33	216.0	206	40	1.13	0
2009	ARI	33	14	10	3.14	229.1	223	38	1.00	0
2010	ARI/LAA	35	12	12	3.91	235.0	216	54	1.27	0
2011	LAA	35	16	10	3.17	238.1	192	33	1.02	0
2012	LAA	30	12	13	4.33	176.2	142	38	1.29	0
2013	WSH	31	10	14	4.67	169.2	151	31	1.24	1
2014	LAD	32	13	11	4.02	186.0	145	36	1.18	0
2015	MIA/CHC	32	11	9	3.60	187.1	132	38	1.13	0

What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV