George Bradley was credited with 45 wins in his rookie season in 1876.

Interpreted as:

pitchers with 45 or more w in a season

	NAME	W	SEASON	TM	L	W%	G	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	George Bradley G. Bradley	45	1876	STL	19	.703	64	64	1.23	103	63	16	0	573.0	470	78	229	3	38		0	2,269	34	1.62	0.60	2.71	0.05	4.5	1.7	0.89		3.60	58	2.14	101	7.38	-20.7
2	Al Spalding A. Spalding	47	1876	CWS	12	.797	61	60	1.75	39	53	8	0	528.2	542	103	226	6	26		2	2,219	1	0.66	0.44	1.50	0.10	1.8	1.2	1.07		3.85	73	2.38	99	9.23	9
3	John Ward J. Ward	47	1879	PRO	19	.712	70	60	2.15	239	58	2	1	587.0	571	140	270	5	36		10	2,425	29	3.66	0.55	6.64	0.08	9.9	1.5	1.03		4.14	89	2.22	92	8.75	7.9
4	Jim McCormick J. McCormick	45	1880	CLE	28	.616	74	74	1.85	260	72	7	0	657.2	585	135	274	2	75		0	2,669	21	3.56	1.03	3.47	0.03	9.7	2.8	1.00		3.75	81	2.12	93	8.01	4.6
5	Pud Galvin P. Galvin	46	1883	BUF	29	.613	76	75	2.72	279	72	5	0	656.1	676	198	367	9	50		1	2,741	28	3.83	0.69	5.58	0.12	10.2	1.8	1.11		5.03	85	2.81	88	9.27	32
6	Old Hoss Radbourn O. Hoss Radbourn	48	1883	PRO	25	.658	76	68	2.05	315	66	4	1	632.1	563	144	275	7	56		8	2,540	36	4.48	0.80	5.63	0.10	12.4	2.2	0.98		3.91	68	2.67	88	8.01	17.8
7	Charlie Buffinton C. Buffinton	48	1884	BSN	16	.750	67	67	2.15	417	63	8	0	587.0	506	140	225	15	76		0	2,383	24	6.39	1.17	5.49	0.23	17.5	3.2	0.99		3.45	74	2.57	77	7.76	46.8
8	Pud Galvin P. Galvin	46	1884	BUF	22	.676	72	72	1.99	369	71	12	0	636.1	566	141	254	23	63		0	2,554	16	5.22	0.89	5.86	0.33	14.4	2.5	0.99		3.59	64	2.88	82	8.01	50.9
9	Guy Hecker G. Hecker	52	1884	LOU	20	.722	75	73	1.80	385	72	6	0	670.2	526	134	230	4	56	16	2	2,649	27	5.17	0.75	6.88	0.05	14.5	2.1	0.87	.239	3.09	57	2.53	80	7.06	43
10	Old Hoss Radbourn O. Hoss Radbourn	59	1884	PRO	12	.831	75	73	1.38	441	73	11	2	678.2	528	104	216	18	98		2	2,672	34	5.85	1.30	4.50	0.24	16.5	3.7	0.92		2.86	48	2.75	84	7.00	31.9
11	John Clarkson J. Clarkson	53	1885	CWS	16	.768	70	70	1.85	308	68	10	0	623.0	497	128	255	21	97		0	2,487	14	4.45	1.40	3.18	0.30	12.4	3.9	0.95		3.68	61	2.80	86	7.18	38.8
12	Matt Kilroy M. Kilroy	46	1887	BAL	19	.708	69	69	3.07	217	66	6	0	589.1	585	201	326	9	157	20	1	2,492	46	3.31	2.40	1.38	0.14	8.7	6.3	1.26	.276	4.98	73	3.64	90	8.93	23.3
13	Silver King S. King	45	1888	STL	20	.692	66	64	1.63	258	64	6	0	584.2	435	106	203	6	76	30	1	2,291	23	3.97	1.17	3.39	0.09	11.3	3.3	0.87	.223	3.12	50	2.38	76	6.70	55
14	John Clarkson J. Clarkson	49	1889	BSN	19	.721	73	72	2.73	284	68	8	1	620.0	589	188	280	16	203	17	1	2,641	16	4.12	2.95	1.40	0.23	10.8	7.7	1.28	.270	4.06	65	3.49	82	8.55	56.6