Valerio De Los Santos allowed the fewest H/9 with more than 20.0 innings pitched in 1998, with 4.57 per nine innings in his rookie season.

Interpreted as:

lowest h/9 1998 >20 ip by a player <28

	NAME	H/9	IP	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	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-	PRAA
1	Valerio De Los Santos V. De Los Santos	4.57	21.2	1998	MIL	13	0	0		0	2.91	18	0	0	0	11	7	7	4	2	0	3	0	75	1	7.48	0.83	9.00	1.66	24.0	2.7	0.60	.137	2.91	69	4.15	96	0.4
2	Ugueth Urbina U. Urbina	4.80	69.1	1998	MON	64	6	3	.667	0	1.30	94	0	0	34	37	10	11	2	33	0	59	2	272	3	12.20	4.28	2.85	0.26	34.6	12.1	1.01	.245	1.43	31	2.22	52	16
3	Trevor Hoffman T. Hoffman	5.05	73.0	1998	SDP	66	4	2	.667	0	1.48	86	0	0	53	41	12	12	2	21	1	61	2	274	8	10.60	2.59	4.10	0.25	31.4	7.7	0.85	.238	1.48	37	2.04	49	17.8
4	John Rocker J. Rocker	5.21	38.0	1998	ATL	47	1	3	.250	0	2.13	42	0	0	2	22	9	10	4	22	3	16	4	156	6	9.95	5.21	1.91	0.95	26.9	14.1	1.16	.212	2.37	51	4.26	100	0
5	Robb Nen R. Nen	5.99	88.2	1998	SFG	78	7	7	.500	0	1.52	110	0	0	40	59	15	21	4	25	1	67	5	357	3	11.17	2.54	4.40	0.41	30.8	7.0	0.95	.253	2.13	37	2.12	50	21.3
6	Michael Jackson M. Jackson	6.05	64.0	1998	CLE	69	1	1	.500	0	1.55	55	0	0	40	43	11	11	4	13	4	57	0	239	1	7.73	1.83	4.23	0.56	23.0	5.4	0.88	.239	1.55	33	3.02	66	11
7	Troy Percival T. Percival	6.08	66.2	1998	ANA	67	2	7	.222	0	3.64	87	0	0	42	45	27	31	5	37	3	60	4	287	3	11.75	5.00	2.35	0.68	30.3	12.9	1.23	.258	4.18	78	3.30	71	9.7
8	Bob Howry B. Howry	6.13	54.1	1998	CWS	44	0	3	.000	0	3.15	51	0	0	9	37	19	20	7	19	2	15	2	217	2	8.45	3.15	2.68	1.16	23.5	8.8	1.03	.217	3.31	69	4.09	90	2.9
9	Jose Paniagua J. Paniagua	6.14	22.0	1998	SEA	18	2	0	1.000	0	2.05	16	0	0	1	15	5	5	3	5	3	2	0	83	2	6.55	2.05	3.20	1.23	19.3	6.0	0.91	.214	2.05	44	4.54	98	0.2
10	Graeme Lloyd G. Lloyd	6.21	37.2	1998	NYY	50	3	0	1.000	0	1.67	20	0	0	0	26	7	10	3	6	2	8	2	145	2	4.78	1.43	3.33	0.72	13.8	4.1	0.85	.202	2.39	37	3.74	83	3.3
11	Tom Gordon T. Gordon	6.24	79.1	1998	BOS	73	7	4	.636	0	2.72	78	0	0	46	55	24	24	2	25	0	69	1	317	9	8.85	2.84	3.12	0.23	24.6	7.9	1.01	.250	2.72	57	2.44	54	18.2
12	Rudy Seanez R. Seanez	6.25	36.0	1998	ATL	34	4	1	.800	0	2.75	50	0	0	2	25	11	13	2	16	1	8	0	148	2	12.50	4.00	3.13	0.50	33.8	10.8	1.14	.291	3.25	66	2.49	59	7.1
13	Matt Mantei M. Mantei	6.26	54.2	1998	FLA	42	3	4	.429	0	2.96	63	0	0	9	38	18	19	1	23	7	23	3	224	0	10.37	3.79	2.74	0.16	28.1	10.3	1.12	.285	3.13	73	2.71	64	9.3
14	Steve Reed S. Reed	6.27	80.1	1998	TOT	70	4	3	.571	0	3.14	73	0	0	1	56	28	29	8	27	5	19	5	322	0	8.18	3.02	2.70	0.90	22.7	8.4	1.03	.230	3.25	70	3.80	87	5
15	Kerry Ligtenberg K. Ligtenberg	6.29	73.0	1998	ATL	75	3	2	.600	0	2.71	79	0	0	30	51	22	24	6	24	0	56	1	290	3	9.74	2.96	3.29	0.74	27.2	8.3	1.03	.249	2.96	65	3.02	71	10.1
16	Scott Elarton S. Elarton	6.32	57.0	1998	HOU	28	2	1	.667	2	3.32	56	0	0	2	40	21	21	5	20	1	7	0	227	1	8.84	3.16	2.80	0.79	24.7	8.8	1.05	.241	3.32	83	3.41	84	4.1
17	Kerry Wood K. Wood	6.32	166.2	1998	CHC	26	13	6	.684	26	3.40	233	1	1	0	117	63	69	14	85	11	0	1	699	6	12.58	4.59	2.74	0.76	33.3	12.2	1.21	.289	3.73	80	3.16	73	21.9
18	Armando Benitez A. Benitez	6.32	68.1	1998	BAL	71	5	6	.455	0	3.82	87	0	0	22	48	29	29	10	39	4	54	2	289	0	11.46	5.14	2.23	1.32	30.1	13.5	1.27	.255	3.82	85	4.38	96	1.4
19	Donne Wall D. Wall	6.40	70.1	1998	SDP	46	5	4	.556	1	2.43	56	0	0	1	50	19	20	6	32	1	14	2	287	3	7.17	4.09	1.75	0.77	19.5	11.1	1.17	.229	2.56	61	4.06	97	0.8
20	Alan Mills A. Mills	6.43	77.0	1998	BAL	72	3	4	.429	0	3.74	57	0	0	2	55	32	32	8	50	1	13	8	327	4	6.66	5.84	1.14	0.94	17.4	15.3	1.36	.223	3.74	83	4.99	109	-3.6
21	Roger Clemens R. Clemens	6.48	234.2	1998	TOR	33	20	6	.769	33	2.65	271	5	3	0	169	69	78	11	88	7	0	0	961	6	10.39	3.38	3.08	0.42	28.2	9.2	1.10	.271	2.99	57	2.65	59	49.2
22	Jeff Tabaka J. Tabaka	6.57	50.2	1998	PIT	37	2	2	.500	0	3.02	40	0	0	0	37	17	19	6	22	5	9	4	212	1	7.11	3.91	1.82	1.07	18.9	10.4	1.16	.223	3.38	71	4.69	110	-2.5
23	Vic Darensbourg V. Darensbourg	6.59	71.0	1998	FLA	59	0	7	.000	0	3.68	74	0	0	1	52	29	29	5	30	0	10	6	287	4	9.38	3.80	2.47	0.63	25.8	10.5	1.15	.264	3.68	91	3.23	77	7.9
24	Xavier Hernandez X. Hernandez	6.67	58.0	1998	TEX	46	6	6	.500	0	3.57	41	0	0	1	43	23	27	5	30	1	15	1	243	4	6.36	4.66	1.37	0.78	16.9	12.3	1.26	.229	4.19	74	4.44	95	1.4
25	Ramon Martinez R. Martinez	6.73	101.2	1998	LAD	15	7	3	.700	15	2.83	91	1	0	0	76	32	41	8	41	3	0	1	418	2	8.06	3.63	2.22	0.71	21.8	9.8	1.15	.247	3.63	72	3.66	87	6.3