Pitching

Walin Castillo

Miami Marlins (A)

Age: 21

Bats/Throws: R/R

6'3" / 175

DOB: 1/2/2005

(21 years, 8 months, 1 day)

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Preseason ProjectionsIn-Season ProjectionsMinor Leagues

Season	Team	Level	Age	W	L	SV	G	GS	IP	K/9	BB/9	HR/9	BABIP	LOB%	GB%	HR/FB	ERA	xERA	FIP	xFIP	WAR
2022	MIA	DSL	17	1	3	0	10	9	33.1	9.72	2.43	0.81	.284	66.1%	44.0%	10.7%	2.70		3.81	3.24
2023	MIA	CPX	18	1	1	1	9	3	31.2	7.39	3.41	1.14	.207	86.0%	47.6%	13.8%	1.42		5.47	4.76
2024	MIA	CPX	19	2	0	0	6	3	23.0	9.00	1.17	0.00	.155	53.8%	43.4%	0.0%	0.39		2.34	2.97
2024	MIA	A	19	2	3	0	12	11	51.0	5.29	3.71	0.53	.289	56.7%	44.2%	5.6%	4.94	4.36	4.44	4.84
2024	MIA	MiLB	19	4	3	0	18	14	74.0	6.45	2.92	0.36	.254	56.2%	44.0%	4.2%	3.53	4.36	3.79	4.26
2025	MIA	A	20	4	5	0	22	13	84.2	7.02	4.78	0.96	.338	61.3%	44.2%	11.3%	6.27	5.11	5.11	4.72
2026	Steamer	PROJ	21	0	0	0	0	0	1.0	4.31	5.01	1.45	.300	67.8%	44.4%		6.04		6.08	5.90	0.0
2026	OOPSY	PROJ	21	0	0	0	1	1	3.9	2.87	4.37	1.44	.296	60.4%			6.53		6.19		0.0
2026	MIA	A	21	2	7	0	17	15	71.1	7.70	4.67	1.01	.332	65.9%	50.0%	14.0%	5.43	5.08	5.25	5.11
2026	Steamer	ROS	21	0	0	0	0	0	1.0	4.38	5.13	1.28	.300	68.3%			5.76		5.82		0.0
2026	OOPSY	ROS	21	0	0	0	1	1	4.0	2.86	4.66	1.48	.295	60.2%			6.68		6.35		0.0

Season	Team	Level	Age	W	L	SV	G	GS	IP	K/9	BB/9	HR/9	BABIP	LOB%	GB%	HR/FB	ERA	xERA	FIP	xFIP	WAR
2022	MIA	DSL	17	1	3	0	10	9	33.1	9.72	2.43	0.81	.284	66.1%	44.0%	10.7%	2.70		3.81	3.24
2023	MIA	CPX	18	1	1	1	9	3	31.2	7.39	3.41	1.14	.207	86.0%	47.6%	13.8%	1.42		5.47	4.76
2024	MIA	CPX	19	2	0	0	6	3	23.0	9.00	1.17	0.00	.155	53.8%	43.4%	0.0%	0.39		2.34	2.97
2024	MIA	A	19	2	3	0	12	11	51.0	5.29	3.71	0.53	.289	56.7%	44.2%	5.6%	4.94	4.36	4.44	4.84
2024	MIA	MiLB	19	4	3	0	18	14	74.0	6.45	2.92	0.36	.254	56.2%	44.0%	4.2%	3.53	4.36	3.79	4.26
2025	MIA	A	20	4	5	0	22	13	84.2	7.02	4.78	0.96	.338	61.3%	44.2%	11.3%	6.27	5.11	5.11	4.72
2026	Steamer	PROJ	21	0	0	0	0	0	1.0	4.31	5.01	1.45	.300	67.8%	44.4%		6.04		6.08	5.90	0.0
2026	OOPSY	PROJ	21	0	0	0	1	1	3.9	2.87	4.37	1.44	.296	60.4%			6.53		6.19		0.0
2026	MIA	A	21	2	7	0	17	15	71.1	7.70	4.67	1.01	.332	65.9%	50.0%	14.0%	5.43	5.08	5.25	5.11
2026	Steamer	ROS	21	0	0	0	0	0	1.0	4.38	5.13	1.28	.300	68.3%			5.76		5.82		0.0
2026	OOPSY	ROS	21	0	0	0	1	1	4.0	2.86	4.66	1.48	.295	60.2%			6.68		6.35		0.0

Preseason ProjectionsIn-Season ProjectionsMinor Leagues

Season	Team	Level	W	L	ERA	G	GS	QS	CG	ShO	SV	HLD	BS	IP	TBF	H	R	ER	HR	BB	IBB	HBP	WP	BK	SO
2022	MIA	DSL	1	3	2.70	10	9		0	0	0	0	0	33.1	138	28	16	10	3	9	0	2	7	0	36
2023	MIA	CPX	1	1	1.42	9	3		0	0	1	0	0	31.2	128	21	10	5	4	12	0	4	1	0	26
2024	MIA	CPX	2	0	0.39	6	3		0	0	0	0	0	23.0	85	9	6	1	0	3	0	1	1	1	23
2024	MIA	A	2	3	4.94	12	11		0	0	0	0	1	51.0	221	51	34	28	3	21	0	1	0	0	30
2024	MIA	MiLB	4	3	3.53	18	14		0	0	0	0	1	74.0	306	60	40	29	3	24	0	2	1	1	53
2025	MIA	A	4	5	6.27	22	13		0	0	0	1	0	84.2	390	99	65	59	9	45	0	4	2	1	66
2026	Steamer	PROJ	0	0	6.04	0	0	0	0	0	0	0		1.0	5	1	1	1	0	1	0	0			0
2026	OOPSY	PROJ	0	0	6.53	1	1	0			0	0		3.9	17	5	3	3	1	2	0	0			1
2026	MIA	A	2	7	5.43	17	15		0	0	0	0	0	71.1	321	78	48	43	8	37	0	4	1	4	61
2026	Steamer	ROS	0	0	5.76	0	0	0	0	0	0	0		1.0	5	1	1	1	0	1		0			0
2026	OOPSY	ROS	0	0	6.68	1	1	0			0	0		4.0	18	5	3	3	1	2	0	0			1

Season	Team	Level	W	L	ERA	G	GS	QS	CG	ShO	SV	HLD	BS	IP	TBF	H	R	ER	HR	BB	IBB	HBP	WP	BK	SO
2022	MIA	DSL	1	3	2.70	10	9		0	0	0	0	0	33.1	138	28	16	10	3	9	0	2	7	0	36
2023	MIA	CPX	1	1	1.42	9	3		0	0	1	0	0	31.2	128	21	10	5	4	12	0	4	1	0	26
2024	MIA	CPX	2	0	0.39	6	3		0	0	0	0	0	23.0	85	9	6	1	0	3	0	1	1	1	23
2024	MIA	A	2	3	4.94	12	11		0	0	0	0	1	51.0	221	51	34	28	3	21	0	1	0	0	30
2024	MIA	MiLB	4	3	3.53	18	14		0	0	0	0	1	74.0	306	60	40	29	3	24	0	2	1	1	53
2025	MIA	A	4	5	6.27	22	13		0	0	0	1	0	84.2	390	99	65	59	9	45	0	4	2	1	66
2026	Steamer	PROJ	0	0	6.04	0	0	0	0	0	0	0		1.0	5	1	1	1	0	1	0	0			0
2026	OOPSY	PROJ	0	0	6.53	1	1	0			0	0		3.9	17	5	3	3	1	2	0	0			1
2026	MIA	A	2	7	5.43	17	15		0	0	0	0	0	71.1	321	78	48	43	8	37	0	4	1	4	61
2026	Steamer	ROS	0	0	5.76	0	0	0	0	0	0	0		1.0	5	1	1	1	0	1		0			0
2026	OOPSY	ROS	0	0	6.68	1	1	0			0	0		4.0	18	5	3	3	1	2	0	0			1

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesAverages

Season	Team	Level	K/9	BB/9	K/BB	HR/9	K%	BB%	K-BB%	AVG	WHIP	BABIP	LOB%	ERA-	FIP-	FIP
2022	MIA	DSL	9.72	2.43	4.00	0.81	26.1%	6.5%	19.6%	.220	1.11	.284	66.1%	61	85	3.81
2023	MIA	CPX	7.39	3.41	2.17	1.14	20.3%	9.4%	10.9%	.188	1.04	.207	86.0%	30	113	5.47
2024	MIA	CPX	9.00	1.17	7.67	0.00	27.1%	3.5%	23.5%	.111	0.52	.155	53.8%	9	53	2.34
2024	MIA	A	5.29	3.71	1.43	0.53	13.6%	9.5%	4.1%	.256	1.41	.289	56.7%	124	112	4.44
2024	MIA	MiLB	6.45	2.92	2.21	0.36	17.3%	7.8%	9.5%	.214	1.14	.254	56.2%	88	94	3.79
2025	MIA	A	7.02	4.78	1.47	0.96	16.9%	11.5%	5.4%	.290	1.70	.338	61.3%	148	122	5.11
2026	Steamer	PROJ	4.31	5.01	0.86	1.45	10.3%	11.9%	-1.7%	.292	1.74	.300	67.8%			6.08
2026	OOPSY	PROJ	2.87	4.37	0.66	1.44	7.2%	10.9%	-3.7%	.300	1.66	.296	60.4%			6.19
2026	MIA	A	7.70	4.67	1.65	1.01	19.0%	11.5%	7.5%	.279	1.61	.332	65.9%	112	110	5.25
2026	Steamer	ROS	4.38	5.13	0.85	1.28	10.4%	12.2%	-1.8%	.288	1.74	.300	68.3%			5.82
2026	OOPSY	ROS	2.86	4.66	0.61	1.48	7.1%	11.6%	-4.5%	.300	1.69	.295	60.2%			6.35

Season	Team	Level	K/9	BB/9	K/BB	HR/9	K%	BB%	K-BB%	AVG	WHIP	BABIP	LOB%	ERA-	FIP-	FIP
2022	MIA	DSL	9.72	2.43	4.00	0.81	26.1%	6.5%	19.6%	.220	1.11	.284	66.1%	61	85	3.81
2023	MIA	CPX	7.39	3.41	2.17	1.14	20.3%	9.4%	10.9%	.188	1.04	.207	86.0%	30	113	5.47
2024	MIA	CPX	9.00	1.17	7.67	0.00	27.1%	3.5%	23.5%	.111	0.52	.155	53.8%	9	53	2.34
2024	MIA	A	5.29	3.71	1.43	0.53	13.6%	9.5%	4.1%	.256	1.41	.289	56.7%	124	112	4.44
2024	MIA	MiLB	6.45	2.92	2.21	0.36	17.3%	7.8%	9.5%	.214	1.14	.254	56.2%	88	94	3.79
2025	MIA	A	7.02	4.78	1.47	0.96	16.9%	11.5%	5.4%	.290	1.70	.338	61.3%	148	122	5.11
2026	Steamer	PROJ	4.31	5.01	0.86	1.45	10.3%	11.9%	-1.7%	.292	1.74	.300	67.8%			6.08
2026	OOPSY	PROJ	2.87	4.37	0.66	1.44	7.2%	10.9%	-3.7%	.300	1.66	.296	60.4%			6.19
2026	MIA	A	7.70	4.67	1.65	1.01	19.0%	11.5%	7.5%	.279	1.61	.332	65.9%	112	110	5.25
2026	Steamer	ROS	4.38	5.13	0.85	1.28	10.4%	12.2%	-1.8%	.288	1.74	.300	68.3%			5.82
2026	OOPSY	ROS	2.86	4.66	0.61	1.48	7.1%	11.6%	-4.5%	.300	1.69	.295	60.2%			6.35