Frank Castillo had a 6-7 record with an ERA of 4.35 and 73 strikeouts in 18 appearances in his rookie season in 1991.

		NAME	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		Frank Castillo F. Castillo	1991	CHC	18	6	7	.462	18	4.35	73	4	0	0	111.2	107	54	56	5	33	0	0	2	467	5	5.88	2.66	2.21	0.40	15.6	7.1	1.25	.287	4.51	113	3.01	78	8.62	10.3

	NAME	DATE	SEASON	TM		OPP	DEC	GS	ERA	SO	CG	IP	H	ER	R	HR	BB	IBB	TBF	WP
1	Frank Castillo F. Castillo	10/1/1991	1991	CHC	@	PHI		1	4.50	2	0	8.0	6	4	4	0	2	0	33	0
2	Frank Castillo F. Castillo	9/27/1991	1991	CHC	@	STL	L	1	10.80	4	0	3.1	2	4	4	0	5	0	16	0
3	Frank Castillo F. Castillo	9/22/1991	1991	CHC	vs	MON	L	1	8.44	5	0	5.1	9	5	5	3	2	1	27	0
4	Frank Castillo F. Castillo	9/16/1991	1991	CHC	@	PIT	L	1	7.50	4	0	6.0	9	5	5	1	3	0	29	1
5	Frank Castillo F. Castillo	9/11/1991	1991	CHC	vs	NYM	L	1	5.68	2	0	6.1	8	4	4	0	2	0	28	0
6	Frank Castillo F. Castillo	9/6/1991	1991	CHC	vs	SFG	W	1	1.08	10	0	8.1	3	1	2	0	1	0	29	0
7	Frank Castillo F. Castillo	9/1/1991	1991	CHC	@	LAD	L	1	67.50	0	0	0.2	5	5	5	0	3	1	9	0
8	Frank Castillo F. Castillo	8/27/1991	1991	CHC	vs	LAD	W	1	1.00	7	1	9.0	3	1	1	0	2	0	31	1
9	Frank Castillo F. Castillo	8/10/1991	1991	CHC	vs	NYM		1	0.00	0	0	0.1	0	0	0	0	0	0	1	0
10	Frank Castillo F. Castillo	8/5/1991	1991	CHC	@	NYM	W	1	2.00	5	1	9.0	9	2	2	0	1	0	35	0
11	Frank Castillo F. Castillo	7/31/1991	1991	CHC	@	CIN	L	1	9.00	2	0	4.0	7	4	4	0	1	0	19	1
12	Frank Castillo F. Castillo	7/26/1991	1991	CHC	vs	ATL	L	1	4.50	4	0	6.0	6	3	4	0	2	0	27	1
13	Frank Castillo F. Castillo	7/21/1991	1991	CHC	@	HOU	W	1	2.00	4	1	9.0	9	2	2	0	1	0	36	0
14	Frank Castillo F. Castillo	7/16/1991	1991	CHC	@	ATL		1	9.00	3	0	4.0	7	4	4	0	2	0	22	1
15	Frank Castillo F. Castillo	7/12/1991	1991	CHC	vs	HOU	W	1	2.16	8	0	8.1	3	2	2	0	2	0	30	0
16	Frank Castillo F. Castillo	7/5/1991	1991	CHC	@	STL	W	1	1.00	4	1	9.0	6	1	1	0	2	0	34	0
17	Frank Castillo F. Castillo	7/1/1991	1991	CHC	vs	PIT		1	6.43	7	0	7.0	10	5	5	1	1	0	32	0
18	Frank Castillo F. Castillo	6/27/1991	1991	CHC	@	PIT		1	2.25	2	0	8.0	5	2	2	0	1	0	29	0
	Total							18	4.35	73	4	111.2	107	54	56	5	33	2	467	5