Don McMahon career wins

• Best season on file: 10 in 1971.
• Most recent: 0 in 1974.

Sum of 18 regular seasons, 1957 through 1974. Figures come from ESPN's box scores and were last read on September 21, 2026.

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Don McMahon career wins, 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.
1957	ATL	32	2	3	1.54	46.2	46	29	1.33	9
1958	ATL	38	7	2	3.68	58.2	37	29	1.35	8
1959	ATL	60	5	3	2.57	80.2	55	37	1.46	15
1960	ATL	48	3	6	5.94	63.2	50	32	1.54	10
1961	ATL	53	6	4	2.84	92.0	55	51	1.47	8
1962	ATL/HOU	53	5	6	1.69	79.2	72	33	1.12	8
1963	HOU	49	1	5	4.05	80.0	51	26	1.36	5
1964	CLE	70	6	4	2.41	101.0	92	52	1.18	16
1965	CLE	58	3	3	3.28	85.0	60	37	1.36	11
1966	CLE/BOS	61	9	8	2.69	90.1	62	44	1.30	10
1967	BOS/CHW	63	6	2	1.98	109.1	84	40	0.99	5
1968	CHW/DET	45	5	2	1.98	81.2	65	30	1.02	1
1969	DET/SF	47	6	6	3.56	60.2	59	27	1.07	13
1970	SF	61	9	5	2.96	94.1	74	45	1.22	19
1971	SF	61	10	6	4.06	82.0	71	37	1.34	4
1972	SF	44	3	3	3.71	63.0	45	21	1.06	5
1973	SF	22	4	0	1.48	30.1	20	7	0.92	6
1974	SF	9	0	0	3.09	11.2	5	2	1.29	0

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