Luis Castillo was 8-16 with an ERA of 3.98 and 192 strikeouts in 33 appearances for the Reds in 2021.

		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		Luis Castillo L. Castillo	2021	CIN	33	8	16	.333	33	3.98	192	0	0	0	187.2	181	83	94	19	75	7	0	4	803	1	9.21	3.60	2.56	0.91	23.9	9.3	1.36	.318	4.51	90	3.74	84	8.68	14.5

Games

	NAME	DATE	SEASON	TM		OPP	DEC	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Luis Castillo L. Castillo	10/1/2021	2021	CIN	@	PIT		1	1.69	5	0	0	0	5.1	6	1	1	0	3	0	0	0	23	0
2	Luis Castillo L. Castillo	9/23/2021	2021	CIN	vs	WSH	L	1	3.00	6	0	0	0	6.0	6	2	2	1	3	0	0	1	27	0
3	Luis Castillo L. Castillo	9/17/2021	2021	CIN	vs	LAD	W	1	0.00	10	0	0	0	6.1	5	0	0	0	2	0	0	0	26	0
4	Luis Castillo L. Castillo	9/11/2021	2021	CIN	@	STL		1	5.14	5	0	0	0	7.0	8	4	4	1	1	0	0	0	27	0
5	Luis Castillo L. Castillo	9/5/2021	2021	CIN	vs	DET	L	1	1.50	7	0	0	0	6.0	4	1	3	0	2	0	0	0	24	0
6	Luis Castillo L. Castillo	8/30/2021	2021	CIN	vs	STL	L	1	4.50	8	0	0	0	6.0	5	3	3	1	2	0	0	0	24	0
7	Luis Castillo L. Castillo	8/25/2021	2021	CIN	@	MIL	L	1	2.84	6	0	0	0	6.1	4	2	2	0	2	1	0	0	25	0
8	Luis Castillo L. Castillo	8/19/2021	2021	CIN	vs	MIA	W	1	1.29	7	0	0	0	7.0	8	1	1	0	1	0	0	0	28	0
9	Luis Castillo L. Castillo	8/14/2021	2021	CIN	@	PHI	L	1	4.05	8	0	0	0	6.2	5	3	3	1	2	0	0	0	27	0
10	Luis Castillo L. Castillo	8/9/2021	2021	CIN	@	CLE	L	1	21.60	2	0	0	0	3.1	7	8	8	2	3	1	0	0	21	0
11	Luis Castillo L. Castillo	8/4/2021	2021	CIN	vs	MIN	W	1	1.50	7	0	0	0	6.0	6	1	1	1	1	0	0	0	24	0
12	Luis Castillo L. Castillo	7/29/2021	2021	CIN	@	CHC	W	1	4.50	8	0	0	0	6.0	7	3	3	2	2	0	0	0	24	0
13	Luis Castillo L. Castillo	7/24/2021	2021	CIN	vs	STL	W	1	1.29	9	0	0	0	7.0	5	1	1	0	3	0	0	1	28	0
14	Luis Castillo L. Castillo	7/17/2021	2021	CIN	vs	MIL		1	0.00	8	0	0	0	6.0	5	0	0	0	3	1	0	0	26	0
15	Luis Castillo L. Castillo	7/11/2021	2021	CIN	@	MIL		1	1.69	6	0	0	0	5.1	3	1	1	0	6	0	0	0	24	0
16	Luis Castillo L. Castillo	7/6/2021	2021	CIN	@	KCR		1	1.29	4	0	0	0	7.0	3	1	1	1	1	0	0	0	25	0
17	Luis Castillo L. Castillo	7/1/2021	2021	CIN	vs	SDP		1	4.26	6	0	0	0	6.1	5	3	3	0	3	0	0	0	26	0
18	Luis Castillo L. Castillo	6/26/2021	2021	CIN	vs	ATL	W	1	0.00	6	0	0	0	7.0	6	0	0	0	2	0	0	0	28	0
19	Luis Castillo L. Castillo	6/20/2021	2021	CIN	@	SDP	L	1	3.00	7	0	0	0	6.0	6	2	3	0	3	0	0	0	26	0
20	Luis Castillo L. Castillo	6/15/2021	2021	CIN	@	MIL		1	0.00	7	0	0	0	7.0	3	0	0	0	3	0	0	0	26	0
21	Luis Castillo L. Castillo	6/10/2021	2021	CIN	vs	MIL	L	1	4.76	7	0	0	0	5.2	1	3	3	0	3	1	0	0	22	0
22	Luis Castillo L. Castillo	6/4/2021	2021	CIN	@	STL	W	1	1.50	5	0	0	0	6.0	3	1	1	1	1	0	0	0	23	0
23	Luis Castillo L. Castillo	5/29/2021	2021	CIN	@	CHC	L	1	3.60	3	0	0	0	5.0	4	2	4	0	4	1	0	0	23	0
24	Luis Castillo L. Castillo	5/23/2021	2021	CIN	vs	MIL	L	1	9.00	5	0	0	0	5.0	5	5	5	1	4	0	0	0	24	0
25	Luis Castillo L. Castillo	5/18/2021	2021	CIN	vs	SFG	L	1	5.40	11	0	0	0	5.0	6	3	3	1	3	0	0	1	24	0
	Total							33	3.98	192	0	0	0	187.2	181	83	94	19	75	7	0	4	803	1