Fred Johnson is the oldest rookie. He was 44 years old in 1938.

	NAME	AGE	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	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	Fred Johnson F. Johnson	44	1938	SLA	17	3	7	.300	6	5.61	24	3	0	3	69.0	91	43	50	7	27	1	9		319	3	3.13	3.52	0.89	0.91	7.5	8.5	1.71	.323	6.52	112	4.76	99	11.87	0.7
2	Diomedes Olivo D. Olivo	43	1962	PIT	62	5	1	.833	1	2.77	66	0	0	7	84.1	88	26	30	5	25	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
3	Fred Lake F. Lake	43	1910	BSN
4	Diomedes Olivo D. Olivo	41	1960	PIT	4	0	0		0	2.79	10	0	0	0	9.2	8	3	3	1	5	0	2	1	42	0	9.31	4.66	2.00	0.93	23.8	11.9	1.34	.269	2.79	75	3.35	93	7.45	0.3
5	Satchel Paige S. Paige	41	1948	CLE	21	6	1	.857	7	2.48	43	3	2	1	72.2	61	20	21	2	22	1	5		295	1	5.33	2.72	1.95	0.25	14.6	7.5	1.14	.260	2.60	61	2.78	71	7.56	9.7
6	Dickey Pearce D. Pearce	41	1877	STL
7	Ken Takahashi K. Takahashi	40	2009	NYM	28	0	1	.000	0	2.96	23	0	0	0	27.1	23	9	9	2	14	2	5	1	116	2	7.57	4.61	1.64	0.66	19.8	12.1	1.35	.280	2.96	73	4.11	99	7.57	0.1
8	Chuck Hostetler C. Hostetler	40	1944	DET
9	Alex McColl A. McColl	40	1934	WSH	42	3	4	.429	2	3.86	29	1	0	2	112.0	129	48	56	6	36	1	26		492	2	2.33	2.89	0.81	0.48	5.9	7.3	1.47	.293	4.50	88	4.29	99	10.37	0.2
10	Dickey Pearce D. Pearce	40	1876	STL
11	Masumi Kuwata M. Kuwata	39	2007	PIT	19	0	1	.000	0	9.43	12	0	0	0	21.0	25	22	23	6	15	1	3	4	103	0	5.14	6.43	0.80	2.57	11.7	14.6	1.90	.275	9.86	215	8.09	182	10.71	-8.6
12	Connie Marrero C. Marrero	39	1950	WSH	27	6	10	.375	19	4.50	63	8	1	1	152.0	159	76	84	17	55	4	5		662	1	3.73	3.26	1.15	1.01	9.5	8.3	1.41	.272	4.97	99	4.37	99	9.41	0.4
13	Joe Berry J. Berry	39	1944	PHA	53	10	8	.556	0	1.94	44	0	0	12	111.1	78	24	32	4	23	2	47		445	1	3.56	1.86	1.91	0.32	9.9	5.2	0.91	.199	2.59	56	2.89	84	6.31	7
14	Alex McColl A. McColl	39	1933	WSH	4	1	0	1.000	1	2.65	5	1	0	0	17.0	13	5	5	0	7	0	0		69	0	2.65	3.71	0.71	0.00	7.2	10.1	1.18	.228	2.65	64	3.44	88	6.88	0.9
15	Joe Strong J. Strong	38	2001	FLA	5	0	0		0	1.35	4	0	0	0	6.2	3	1	1	1	3	0	2	0	25	0	5.40	4.05	1.33	1.35	16.0	12.0	0.90	.118	1.35	32	5.14	121	4.05	-0.7
16	Bob Thurman B. Thurman	38	1955	CIN
17	Bill McGhee B. McGhee	38	1944	PHA
18	Chang-Yong Lim C. Lim	37	2013	CHC	6	0	0		0	5.40	5	0	0	0	5.0	6	3	3	0	7	1	1	1	27	1	9.00	12.60	0.71	0.00	18.5	25.9	2.60	.429	5.40	145	5.84	154	10.80	-1.1
19	Jason Wood J. Wood	37	2007	FLA	1	0	0		0	0.00	0	0	0	0	1.0	0	0	0	0	0	0	1	0	3	0	0.00	0.00		0.00	0.0	0.0	0.00	.000	0.00	0	3.23	73	0.00	0.1
20	Joe Strong J. Strong	37	2000	FLA	18	1	1	.500	0	7.32	18	0	0	1	19.2	26	16	16	3	12	2	5	1	95	2	8.24	5.49	1.50	1.37	18.9	12.6	1.93	.383	7.32	165	5.41	119	11.90	-1.9
21	Joe Berry J. Berry	37	1942	CHC	2	0	0		0	18.00	1	0	0	0	2.0	7	4	4	0	2	0	1		16	0	4.50	9.00	0.50	0.00	6.3	12.5	4.50	.538	18.00	554	4.42	131	31.50	-0.2
22	Brandon Dickson B. Dickson	36	2021	STL	2	0	0		0	13.50	1	0	0	0	2.0	5	3	3	1	0	0	1	0	10	0	4.50	0.00		4.50	10.0	0.0	2.50	.500	13.50	332	8.66	208	22.50	-1
23	Sean Kazmar Jr. S. Kazmar Jr.	36	2021	ATL
24	Scott McClain S. McClain	36	2008	SFG
25	Takashi Saito T. Saito	36	2006	LAD	72	6	2	.750	0	2.07	107	0	0	24	78.1	48	18	19	3	23	2	48	3	303	2	12.29	2.64	4.65	0.34	35.3	7.6	0.91	.268	2.18	47	1.86	42	5.51	23