Pedro Martinez had the highest K/9 in 1999, with 13.20 per nine innings.

Interpreted as:

highest k/9 with a minimum of 1 IP per team game by a player in 1999

	NAME	K/9	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Pedro Martinez P. Martinez	13.20	1999	BOS	31	23	4	.852	29	2.07	313	5	1	0	213.1	160	49	56	9	37	9	1	1	835	6	1.56	8.46	0.38	37.5	4.4	0.92	.323	2.36	42	1.38	30	6.75	79.4
2	Randy Johnson R. Johnson	12.06	1999	ARI	35	17	9	.654	35	2.48	364	12	2	0	271.2	207	75	86	30	70	9	0	3	1,079	4	2.32	5.20	0.99	33.7	6.5	1.02	.292	2.85	53	2.75	59	6.86	57.2
3	Sterling Hitchcock S. Hitchcock	8.49	1999	SDP	33	12	14	.462	33	4.11	194	1	0	0	205.2	202	94	99	29	76	5	0	6	892	15	3.33	2.55	1.27	21.7	8.5	1.35	.294	4.33	97	4.25	96	8.84	3.9
4	Chuck Finley C. Finley	8.44	1999	ANA	33	12	11	.522	33	4.43	200	1	0	0	213.1	197	105	117	23	94	8	0	2	913	15	3.97	2.13	0.97	21.9	10.3	1.36	.296	4.94	89	4.08	84	8.31	18.9
5	David Cone D. Cone	8.24	1999	NYY	31	12	9	.571	31	3.44	177	1	1	0	193.1	164	74	84	21	90	11	0	2	827	7	4.19	1.97	0.98	21.4	10.9	1.31	.271	3.91	73	4.27	89	7.63	11.2
6	Jon Lieber J. Lieber	8.23	1999	CHC	31	10	11	.476	31	4.07	186	3	1	0	203.1	226	92	107	28	46	1	0	6	875	2	2.04	4.04	1.24	21.3	5.3	1.34	.322	4.74	89	3.78	81	10.00	19.9
7	Hideo Nomo H. Nomo	8.22	1999	MIL	28	12	8	.600	28	4.54	161	0	0	0	176.1	173	89	96	27	78	3	0	2	767	10	3.98	2.06	1.38	21.0	10.2	1.42	.293	4.90	100	4.67	101	8.83	-1
8	Aaron Sele A. Sele	8.17	1999	TEX	33	18	9	.667	33	4.79	186	2	2	0	205.0	244	109	115	21	70	12	0	3	920	4	3.07	2.66	0.92	20.2	7.6	1.53	.353	5.05	96	3.84	79	10.71	23.6
9	Pedro Astacio P. Astacio	8.15	1999	COL	34	17	11	.607	34	5.04	210	7	0	0	232.0	258	130	140	38	75	11	0	6	1,008	5	2.91	2.80	1.47	20.8	7.4	1.44	.326	5.43	91	4.55	90	10.01	13.3
10	Kevin Millwood K. Millwood	8.09	1999	ATL	33	18	7	.720	33	2.68	205	2	0	0	228.0	168	68	80	24	59	4	0	2	906	5	2.33	3.47	0.95	22.6	6.5	1.00	.235	3.16	59	3.52	77	6.63	26.7
11	Chan Ho Park C. Ho Park	8.06	1999	LAD	33	13	11	.542	33	5.23	174	0	0	0	194.1	208	113	120	31	100	14	0	4	883	11	4.63	1.74	1.44	19.7	11.3	1.58	.314	5.56	123	5.17	113	9.63	-13.1
12	Kevin Brown K. Brown	7.88	1999	LAD	35	18	9	.667	35	3.00	221	5	1	0	252.1	210	84	99	19	59	7	0	1	1,018	4	2.10	3.75	0.68	21.7	5.8	1.07	.268	3.53	71	3.13	69	7.49	40.5
13	Roger Clemens R. Clemens	7.82	1999	NYY	30	14	10	.583	30	4.60	163	1	1	0	187.2	185	96	101	20	90	9	0	0	822	8	4.32	1.81	0.96	19.8	10.9	1.47	.306	4.84	98	4.35	91	8.87	9.1
14	Shane Reynolds S. Reynolds	7.65	1999	HOU	35	16	14	.533	35	3.85	197	4	2	0	231.2	250	99	108	23	37	1	0	0	963	4	1.44	5.32	0.89	20.5	3.8	1.24	.322	4.20	90	3.21	74	9.71	30.3
15	Mike Mussina M. Mussina	7.61	1999	BAL	31	18	7	.720	31	3.50	172	4	0	0	203.1	207	79	88	16	52	1	0	0	842	2	2.30	3.31	0.71	20.4	6.2	1.27	.318	3.90	74	3.24	68	9.16	35.1
16	Freddy Garcia F. Garcia	7.60	1999	SEA	33	17	8	.680	33	4.07	170	2	1	0	201.1	205	91	96	18	90	10	0	4	888	12	4.02	1.89	0.80	19.1	10.1	1.47	.312	4.29	87	4.09	87	9.16	13.7
17	Curt Schilling C. Schilling	7.59	1999	PHI	24	15	6	.714	24	3.54	152	8	1	0	180.1	159	71	74	25	44	5	0	0	735	4	2.20	3.45	1.25	20.7	6.0	1.13	.263	3.69	77	4.05	89	7.94	10.3
18	John Smoltz J. Smoltz	7.53	1999	ATL	29	11	8	.579	29	3.19	156	1	1	0	186.1	168	66	70	14	40	4	0	2	746	2	1.93	3.90	0.68	20.9	5.4	1.12	.289	3.38	71	3.13	69	8.11	29.9
19	Dave Burba D. Burba	7.12	1999	CLE	34	15	9	.625	34	4.25	174	1	0	0	220.0	211	104	113	30	96	8	0	3	940	13	3.93	1.81	1.23	18.5	10.2	1.40	.286	4.62	86	4.73	98	8.63	2.7
20	Eric Milton E. Milton	7.11	1999	MIN	34	7	11	.389	34	4.49	163	5	2	0	206.1	190	103	111	28	63	3	0	2	858	2	2.75	2.59	1.22	19.0	7.3	1.23	.270	4.84	90	4.27	90	8.29	10.9
21	Russ Ortiz R. Ortiz	7.11	1999	SFG	33	18	9	.667	33	3.81	164	3	0	0	207.2	189	88	109	24	125	6	0	5	922	13	5.42	1.31	1.04	17.8	13.6	1.51	.274	4.72	87	4.94	108	8.19	-8.7
22	Hideki Irabu H. Irabu	7.07	1999	NYY	32	11	7	.611	27	4.84	133	2	1	0	169.1	180	91	98	26	46	6	2	0	733	7	2.44	2.89	1.38	18.1	6.3	1.33	.295	5.21	103	4.47	93	9.57	6.1
23	Bartolo Colon B. Colon	7.07	1999	CLE	32	18	5	.783	32	3.95	161	1	1	0	205.0	185	90	97	24	76	7	0	5	858	4	3.34	2.12	1.05	18.8	8.9	1.27	.273	4.26	80	4.29	89	8.12	12.5
24	Darren Dreifort D. Dreifort	7.05	1999	LAD	30	13	13	.500	29	4.79	140	1	1	0	178.2	177	95	105	20	76	7	0	2	773	9	3.83	1.84	1.01	18.1	9.8	1.42	.296	5.29	113	4.40	96	8.92	3.2
25	Shawn Estes S. Estes	7.05	1999	SFG	32	11	11	.500	32	4.92	159	1	1	0	203.0	209	111	121	21	112	5	0	2	914	15	4.97	1.42	0.93	17.4	12.3	1.58	.305	5.36	112	4.63	101	9.27	-1.5