lowest amount of walks thrown by a pitcher at age 43 in a season with at least 10 games played

Don McMahon has given up the fewest walks by a 43-year-old pitcher with 10+ games pitched in a season, with 7 allowed in 1973.

	NAME	BB	AGE	G	SEASON	TM	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Don McMahon D. McMahon	7	43	22	1973	SFG	4	0	1.000	0	1.48	20	0	0	6	30.1	21	5	5	1	0	16	3	119	3	5.93	2.08	2.86	0.30	16.8	5.9	0.92	.220	1.48	39	2.36	62	6.23	4.7
2	Jeff Fassero J. Fassero	8	43	10	2006	SFG	1	1	.500	1	7.80	7	0	0	0	15.0	23	13	13	4	0	2	0	73	2	4.20	4.80	0.88	2.40	9.6	11.0	2.07	.352	7.80	172	7.27	164	13.80	-4.8
3	Dennis Eckersley D. Eckersley	8	43	50	1998	BOS	4	1	.800	0	4.76	22	0	0	1	39.2	46	21	21	6	2	13	3	171	0	4.99	1.82	2.75	1.36	12.9	4.7	1.36	.301	4.76	100	4.75	106	10.44	-1.3
4	Mariano Rivera M. Rivera	9	43	64	2013	NYY	6	2	.750	0	2.11	54	0	0	44	64.0	58	15	16	6	1	60	3	256	0	7.59	1.27	6.00	0.84	21.1	3.5	1.05	.280	2.25	52	3.04	75	8.16	7.2
5	David Wells D. Wells	12	43	13	2006	TOT	3	5	.375	13	4.42	38	0	0	0	75.1	97	37	41	11	0	0	0	324	0	4.54	1.43	3.17	1.31	11.7	3.7	1.45	.327	4.90	98	4.51	102	11.59	-1
6	Randy Johnson R. Johnson	13	43	10	2007	ARI	4	3	.571	10	3.81	72	0	0	0	56.2	52	24	26	7	4	0	3	233	1	11.44	2.06	5.54	1.11	30.9	5.6	1.15	.328	4.13	81	3.19	69	8.26	8.8
7	Tommy John T. John	15	43	13	1986	NYY	5	3	.625	10	2.93	28	1	0	0	70.2	73	23	27	8	2	2	1	290	2	3.57	1.91	1.87	1.02	9.7	5.2	1.25	.274	3.44	72	4.16	101	9.30	-0.4
8	Early Wynn E. Wynn	15	43	20	1963	CLE	1	2	.333	5	2.28	29	1	0	1	55.1	50	14	14	2	0	7	3	223	0	4.72	2.44	1.93	0.33	13.0	6.7	1.17	.271	2.28	63	2.71	75	8.13	5.5
9	Dolf Luque D. Luque	17	43	26	1934	NYG	4	3	.571	0	3.83	12	0	0	7	42.1	54	18	20	3	1	19		195	2	2.55	3.61	0.71	0.64	6.2	8.7	1.68	.315	4.25	97	4.75	120	11.48	-3.9
10	Babe Adams B. Adams	17	43	33	1925	PIT	6	5	.545	10	5.42	18	3	0	3	101.1	129	61	67	7	3	12		448	0	1.60	1.51	1.06	0.62	4.0	3.8	1.44	.303	5.95	124	4.25	98	11.46	1.4
11	Doug Jones D. Jones	18	43	54	2000	OAK	4	2	.667	0	3.93	54	0	0	2	73.1	86	32	34	6	2	22	4	319	1	6.63	2.21	3.00	0.74	16.9	5.6	1.42	.335	4.17	82	3.53	74	10.55	10.2
12	Dennis Martinez D. Martinez	19	43	53	1998	ATL	4	6	.400	5	4.45	62	1	1	2	91.0	109	45	53	8	3	11	5	396	2	6.13	1.88	3.26	0.79	15.7	4.8	1.41	.332	5.24	106	3.64	85	10.78	6.3
13	Connie Marrero C. Marrero	22	43	22	1954	WSH	3	6	.333	8	4.75	26	1	0	0	66.1	74	35	37	12	0	8		287	1	3.53	2.98	1.18	1.63	9.1	7.7	1.45	.273	5.02	130	4.96	135	10.04	-9.8
14	Jim Kaat J. Kaat	23	43	62	1982	STL	5	3	.625	2	4.08	35	0	0	2	75.0	79	34	40	6	2	12	9	321	2	4.20	2.76	1.52	0.72	10.9	7.2	1.36	.286	4.80	112	3.81	109	9.48	-2.8
15	Jesse Haines J. Haines	23	43	16	1937	SLN	3	3	.500	6	4.52	18	2	0	0	65.2	81	33	36	5	1	4		296	1	2.47	3.15	0.78	0.69	6.1	7.8	1.58	.305	4.93	113	4.58	112	11.10	-3.5
16	John Franco J. Franco	24	43	52	2004	NYM	2	7	.222	0	5.28	36	0	0	0	46.0	46	27	28	6	1	16	2	207	2	7.04	4.70	1.50	1.17	17.4	11.6	1.52	.286	5.48	127	4.80	111	9.00	-2.6
17	Dutch Leonard D. Leonard	24	43	45	1952	CHC	2	2	.500	0	2.16	37	0	0	11	66.2	56	16	18	3	3	36		282	2	5.00	3.24	1.54	0.41	13.1	8.5	1.20	.247	2.43	56	3.08	81	7.56	5.4
18	Diomedes Olivo D. Olivo	25	43	62	1962	PIT	5	1	.833	1	2.77	66	0	0	7	84.1	88	26	30	5	0	19	7	356	0	7.04	2.67	2.64	0.53	18.5	7.0	1.34	.319	3.20	71	2.71	71	9.39	10.2
19	Dazzy Vance D. Vance	25	43	25	1934	TOT	1	3	.250	6	4.56	42	1	0	1	77.0	90	39	47	5	3	4		341	1	4.91	2.92	1.68	0.58	12.3	7.3	1.49	.320	5.49	112	3.96	96	10.52	1.5
20	Cy Young C. Young	27	43	21	1910	CLE	7	10	.412	20	2.53	58	14	1	0	163.1	149	46	62	0	4	0		623	7	3.20	1.49	2.15	0.00	9.3	4.3	1.08	.279	3.42	99	2.18	83	8.21	8.6
21	Roger Clemens R. Clemens	29	43	19	2006	HOU	7	6	.538	19	2.30	102	0	0	0	113.1	89	29	34	7	4	0	1	451	3	8.10	2.30	3.52	0.56	22.6	6.4	1.04	.265	2.70	52	3.02	66	7.07	19.4
22	Don Sutton D. Sutton	30	43	16	1988	LAD	3	6	.333	16	3.92	44	0	0	0	87.1	91	38	44	7	1	0	6	380	2	4.53	3.09	1.47	0.72	11.6	7.9	1.39	.282	4.53	118	3.86	113	9.38	-4.7
23	Bartolo Colon B. Colon	32	43	34	2016	NYM	15	8	.652	33	3.43	128	0	0	0	191.2	200	73	81	24	3	0	2	791	0	6.01	1.50	4.00	1.13	16.2	4.0	1.21	.291	3.80	88	3.98	98	9.39	1.2
24	Earl Caldwell E. Caldwell	33	43	33	1948	TOT	2	6	.250	1	6.75	15	0	0	3	48.0	64	36	39	5	3	18		231	0	2.81	6.19	0.45	0.94	6.5	14.3	2.02	.337	7.31	157	5.64	135	12.00	-7.9
25	Hoyt Wilhelm H. Wilhelm	34	43	49	1967	CWS	8	3	.727	0	1.31	76	0	0	12	89.0	58	13	21	2	4	30	4	360	2	7.69	3.44	2.24	0.20	21.1	9.4	1.03	.230	2.12	42	2.40	74	5.87	8.5