David Wells career ERA

• Best season on file: 2.40 in 1989.
• Most recent: 5.43 in 2007.

Average of 21 regular seasons, 1987 through 2007. Figures come from ESPN's box scores and were last read on September 22, 2026.

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David Wells 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.
1987	TOR	18	4	3	3.99	29.1	32	12	1.67	1
1988	TOR	41	3	5	4.62	64.1	56	31	1.49	4
1989	TOR	54	7	4	2.40	86.1	78	28	1.09	2
1990	TOR	43	11	6	3.14	189.0	115	45	1.11	3
1991	TOR	40	15	10	3.72	198.1	106	49	1.19	1
1992	TOR	41	7	9	5.40	120.0	62	36	1.45	2
1993	DET	32	11	9	4.19	187.0	139	42	1.20	0
1994	DET	16	5	7	3.96	111.1	71	24	1.23	0
1995	DET/CIN	29	16	8	3.24	203.0	133	53	1.22	0
1996	BAL	34	11	14	5.14	224.1	130	51	1.33	0
1997	NYY	32	16	10	4.21	218.0	156	45	1.30	0
1998	NYY	30	18	4	3.49	214.1	163	29	1.05	0
1999	TOR	34	17	10	4.82	231.2	169	62	1.33	0
2000	TOR	35	20	8	4.11	229.2	166	31	1.29	0
2001	CHW	16	5	7	4.47	100.2	59	21	1.40	0
2002	NYY	31	19	7	3.75	206.1	137	45	1.24	0
2003	NYY	31	15	7	4.14	213.0	101	20	1.23	0
2004	SD	31	12	8	3.73	195.2	101	20	1.14	0
2005	BOS	30	15	7	4.45	184.0	107	21	1.31	0
2006	BOS/SD	13	3	5	4.42	75.1	38	12	1.45	0
2007	SD/LAD	29	9	9	5.43	157.1	82	42	1.54	0

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