Between the 1998 and 1999 seasons, Pedro Martinez won the most games, with 42 wins.

Interpreted as:

most regular-season wins by a player in 1998 to 1999

	NAME	W	L	W%	G	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	Pedro Martinez P. Martinez	42	11	.792	64	62	2.50	564	8	3	0	447.0	348	124	138	35	104	17	1	4	1,786	15	11.36	2.09	5.42	0.70	31.6	5.8	1.01	.294	2.78	52	2.43	54	7.01	107.9
2	Jose Lima J. Lima	37	18	.673	68	68	3.64	356	6	1	0	479.2	485	194	208	64	76	9	0	3	1,974	12	6.68	1.43	4.68	1.20	18.0	3.9	1.17	.287	3.90	88	3.91	93	9.10	14.8
3	Greg Maddux G. Maddux	37	18	.673	67	67	2.85	340	13	5	0	470.1	459	149	178	29	82	11	0	18	1,927	5	6.51	1.57	4.15	0.55	17.6	4.3	1.15	.294	3.41	65	3.08	70	8.78	69.8
4	Aaron Sele A. Sele	37	20	.649	66	66	4.50	353	5	4	0	417.2	483	209	231	35	154	25	0	9	1,874	8	7.61	3.32	2.29	0.75	18.8	8.2	1.53	.343	4.98	92	3.81	80	10.41	44
5	Kevin Brown K. Brown	36	16	.692	71	70	2.69	478	12	4	0	509.1	435	152	176	27	108	17	0	5	2,050	14	8.45	1.91	4.43	0.48	23.3	5.3	1.07	.287	3.11	65	2.68	61	7.69	97.5
6	Randy Johnson R. Johnson	36	20	.643	69	69	2.86	693	22	8	0	516.0	410	164	188	53	156	23	0	4	2,093	11	12.09	2.72	4.44	0.92	33.1	7.5	1.10	.306	3.28	62	2.82	62	7.15	99.5
7	Kevin Millwood K. Millwood	35	15	.700	64	62	3.29	368	5	1	0	402.1	343	147	166	42	115	7	1	5	1,654	11	8.23	2.57	3.20	0.94	22.2	7.0	1.14	.268	3.71	76	3.56	81	7.67	39.1
8	Shane Reynolds S. Reynolds	35	22	.614	70	70	3.68	406	7	3	0	465.0	507	190	207	48	90	3	0	2	1,949	9	7.86	1.74	4.51	0.93	20.8	4.6	1.28	.327	4.01	89	3.32	79	9.81	46.3
9	David Wells D. Wells	35	14	.714	64	64	4.18	332	15	6	0	446.0	441	207	218	61	91	7	0	2	1,838	3	6.70	1.84	3.65	1.23	18.1	5.0	1.19	.282	4.40	88	4.08	88	8.90	27.8
10	Roger Clemens R. Clemens	34	16	.680	63	63	3.52	434	6	4	0	422.1	354	165	179	31	178	16	0	0	1,783	14	9.25	3.79	2.44	0.66	24.3	10.0	1.26	.287	3.81	75	3.40	73	7.54	58.4
11	Tom Glavine T. Glavine	34	17	.667	68	68	3.30	295	6	3	0	463.1	461	170	182	31	157	6	0	16	1,957	5	5.73	3.05	1.88	0.60	15.1	8.0	1.33	.293	3.54	75	3.78	85	8.95	32.9
12	Mike Hampton M. Hampton	33	11	.750	66	66	3.12	314	4	3	0	450.2	433	156	178	30	182	10	0	3	1,896	13	6.27	3.63	1.73	0.60	16.6	9.6	1.36	.296	3.55	76	3.88	93	8.65	15.9
13	Rick Helling R. Helling	33	18	.647	68	68	4.63	295	7	2	0	435.2	437	224	236	68	163	7	0	11	1,865	18	6.09	3.37	1.81	1.40	15.8	8.7	1.38	.277	4.88	94	4.97	104	9.03	-9.1
14	Bartolo Colon B. Colon	32	14	.696	63	63	3.83	319	7	3	0	409.0	390	174	188	39	155	10	0	10	1,741	8	7.02	3.41	2.06	0.86	18.3	8.9	1.33	.288	4.14	79	4.02	85	8.58	31.1
15	David Cone D. Cone	32	16	.667	62	62	3.50	386	4	1	0	401.0	350	156	173	41	149	26	0	3	1,693	13	8.66	3.34	2.59	0.92	22.8	8.8	1.24	.283	3.88	76	3.84	82	7.86	36.2
16	Charles Nagy C. Nagy	32	21	.604	66	65	5.09	246	3	0	0	412.1	488	233	259	60	125	15	0	16	1,817	6	5.37	2.73	1.97	1.31	13.5	6.9	1.49	.312	5.65	105	4.84	103	10.65	-6.6
17	Andy Ashby A. Ashby	31	19	.620	64	64	3.56	283	9	4	0	432.2	427	171	185	49	112	14	0	12	1,801	13	5.89	2.33	2.53	1.02	15.7	6.2	1.25	.281	3.85	87	4.17	97	8.88	5.7
18	Scott Erickson S. Erickson	31	25	.554	70	70	4.39	292	17	5	0	481.2	528	235	252	50	168	24	0	8	2,097	14	5.46	3.14	1.74	0.93	13.9	8.0	1.44	.306	4.71	95	4.46	95	9.87	11.4
19	Mike Mussina M. Mussina	31	17	.646	60	60	3.49	347	8	2	0	409.2	396	159	173	38	93	5	0	3	1,677	12	7.62	2.04	3.73	0.83	20.7	5.5	1.19	.300	3.80	76	3.36	72	8.70	60.1
20	Kirk Rueter K. Rueter	31	19	.620	66	66	4.88	196	2	0	0	372.1	412	202	218	55	112	9	0	5	1,610	8	4.74	2.71	1.75	1.33	12.2	7.0	1.41	.288	5.27	115	4.97	113	9.96	-23.4
21	Pedro Astacio P. Astacio	30	25	.545	69	68	5.61	380	7	0	0	441.1	503	275	300	77	149	28	0	6	1,946	7	7.75	3.04	2.55	1.57	19.5	7.7	1.48	.325	6.12	104	4.88	99	10.26	4.6
22	Dave Burba D. Burba	30	19	.612	66	65	4.18	306	1	0	0	423.2	421	197	213	60	165	15	0	7	1,810	19	6.50	3.51	1.85	1.27	16.9	9.1	1.38	.286	4.52	86	4.80	102	8.94	-4.2
23	Pete Harnisch P. Harnisch	30	17	.638	65	65	3.40	277	4	3	0	407.1	366	154	165	49	121	11	0	6	1,687	7	6.12	2.67	2.29	1.08	16.4	7.2	1.20	.258	3.65	76	4.30	95	8.09	11
24	Al Leiter A. Leiter	30	18	.625	60	60	3.39	336	5	3	0	406.0	360	153	162	27	164	20	0	10	1,712	8	7.45	3.64	2.05	0.60	19.6	9.6	1.29	.286	3.59	80	3.70	85	7.98	29
25	Andy Pettitte A. Pettitte	30	22	.577	64	63	4.46	267	5	0	0	408.0	442	202	215	40	176	9	0	4	1,783	8	5.89	3.88	1.52	0.88	15.0	9.9	1.51	.311	4.74	96	4.45	96	9.75	8.7