Pitching

Jonathan Rosario

Miami Marlins (A)

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Age: 19

Bats/Throws: L/L

6'2" / 165

DOB: 1/3/2007

(19 years, 8 months)

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In-Season ProjectionsMinor Leagues

Season	Team	Level	Age	W	L	SV	G	GS	IP	divider	K/9	BB/9	HR/9	BABIP	LOB%	GB%	HR/FB	divider	vFA	divider	ERA	xERA	FIP	xFIP	WAR
2024	MIA	DSL	17	0	1	0	9	0	4.1		4.15	43.62	0.00	.607	28.2%	37.0%	0.0%				54.00		18.28	19.45
2025	MIA	DSL	18	3	0	0	16	0	21.0		10.71	7.71	0.86	.321	57.6%	72.7%	16.7%				5.57		6.03	5.19
2026	MIA	CPX	19	1	2	0	18	1	27.1		11.85	9.22	0.66	.262	51.7%	61.8%	15.4%				6.26		6.61	6.30
2026	MIA	A	19	0	1	0	7	0	7.2		10.57	9.39	1.17	.313	79.5%	64.7%	25.0%				5.87	9.36	8.21	7.38
2026	MIA	MiLB	19	1	3	0	25	1	35.0		11.57	9.26	0.77	.273	58.7%	62.5%	17.6%				6.17	9.36	6.96	6.53
2026	Steamer	ROS	19	0	0	0	1	0	1.0		5.77	8.25	1.08	.300	70.4%						5.93		6.33		0.0
2026	OOPSY	ROS	19	0	0	0	1	0	1.4		6.83	6.25	1.20	.296	71.7%						5.37		5.63		0.0

Season	Team	Level	Age	W	L	SV	G	GS	IP	divider	K/9	BB/9	HR/9	BABIP	LOB%	GB%	HR/FB	divider	vFA	divider	ERA	xERA	FIP	xFIP	WAR
2024	MIA	DSL	17	0	1	0	9	0	4.1		4.15	43.62	0.00	.607	28.2%	37.0%	0.0%				54.00		18.28	19.45
2025	MIA	DSL	18	3	0	0	16	0	21.0		10.71	7.71	0.86	.321	57.6%	72.7%	16.7%				5.57		6.03	5.19
2026	MIA	CPX	19	1	2	0	18	1	27.1		11.85	9.22	0.66	.262	51.7%	61.8%	15.4%				6.26		6.61	6.30
2026	MIA	A	19	0	1	0	7	0	7.2		10.57	9.39	1.17	.313	79.5%	64.7%	25.0%				5.87	9.36	8.21	7.38
2026	MIA	MiLB	19	1	3	0	25	1	35.0		11.57	9.26	0.77	.273	58.7%	62.5%	17.6%				6.17	9.36	6.96	6.53
2026	Steamer	ROS	19	0	0	0	1	0	1.0		5.77	8.25	1.08	.300	70.4%						5.93		6.33		0.0
2026	OOPSY	ROS	19	0	0	0	1	0	1.4		6.83	6.25	1.20	.296	71.7%						5.37		5.63		0.0

In-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
2024	MIA	DSL	0	1	54.00	9	0		0	0	0	0	1	4.1	52	17	28	26	0	21	0	1	7	0	2
2025	MIA	DSL	3	0	5.57	16	0		0	0	0	0	0	21.0	102	19	19	13	2	18	0	4	9	0	25
2026	MIA	CPX	1	2	6.26	18	1		0	0	0	1	3	27.1	136	18	28	19	2	28	0	9	4	4	36
2026	MIA	A	0	1	5.87	7	0		0	0	0	0	1	7.2	39	6	5	5	1	8	0	5	0	0	9
2026	MIA	MiLB	1	3	6.17	25	1		0	0	0	1	4	35.0	175	24	33	24	3	36	0	14	4	4	45
2026	Steamer	ROS	0	0	5.93	1	0	0	0	0	0	0		1.0	5	1	1	1	0	1		0			1
2026	OOPSY	ROS	0	0	5.37	1	0	0			0	0		1.4	7	2	1	1	0	1	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
2024	MIA	DSL	0	1	54.00	9	0		0	0	0	0	1	4.1	52	17	28	26	0	21	0	1	7	0	2
2025	MIA	DSL	3	0	5.57	16	0		0	0	0	0	0	21.0	102	19	19	13	2	18	0	4	9	0	25
2026	MIA	CPX	1	2	6.26	18	1		0	0	0	1	3	27.1	136	18	28	19	2	28	0	9	4	4	36
2026	MIA	A	0	1	5.87	7	0		0	0	0	0	1	7.2	39	6	5	5	1	8	0	5	0	0	9
2026	MIA	MiLB	1	3	6.17	25	1		0	0	0	1	4	35.0	175	24	33	24	3	36	0	14	4	4	45
2026	Steamer	ROS	0	0	5.93	1	0	0	0	0	0	0		1.0	5	1	1	1	0	1		0			1
2026	OOPSY	ROS	0	0	5.37	1	0	0			0	0		1.4	7	2	1	1	0	1	0	0			1

In-Season ProjectionsMinor LeaguesAverages

Season	Team	Level	K/9	BB/9	K/BB	HR/9	divider	K%	BB%	K-BB%	divider	AVG	WHIP	BABIP	LOB%	divider	ERA-	FIP-	divider	FIP
2024	MIA	DSL	4.15	43.62	0.10	0.00		3.8%	40.4%	-36.5%		.567	8.77	.607	28.2%		999	365		18.28
2025	MIA	DSL	10.71	7.71	1.39	0.86		24.5%	17.6%	6.9%		.238	1.76	.321	57.6%		102	111		6.03
2026	MIA	CPX	11.85	9.22	1.29	0.66		26.5%	20.6%	5.9%		.182	1.68	.262	51.7%		111	119		6.61
2026	MIA	A	10.57	9.39	1.13	1.17		23.1%	20.5%	2.6%		.231	1.83	.313	79.5%		122	172		8.21
2026	MIA	MiLB	11.57	9.26	1.25	0.77		25.7%	20.6%	5.1%		.192	1.71	.273	58.7%		114	130		6.96
2026	Steamer	ROS	5.77	8.25	0.70	1.08		13.0%	18.6%	-5.6%		.272	1.99	.300	70.4%					6.33
2026	OOPSY	ROS	6.83	6.25	1.09	1.20		15.1%	13.8%	1.3%		.266	1.83	.296	71.7%					5.63

Season	Team	Level	K/9	BB/9	K/BB	HR/9	divider	K%	BB%	K-BB%	divider	AVG	WHIP	BABIP	LOB%	divider	ERA-	FIP-	divider	FIP
2024	MIA	DSL	4.15	43.62	0.10	0.00		3.8%	40.4%	-36.5%		.567	8.77	.607	28.2%		999	365		18.28
2025	MIA	DSL	10.71	7.71	1.39	0.86		24.5%	17.6%	6.9%		.238	1.76	.321	57.6%		102	111		6.03
2026	MIA	CPX	11.85	9.22	1.29	0.66		26.5%	20.6%	5.9%		.182	1.68	.262	51.7%		111	119		6.61
2026	MIA	A	10.57	9.39	1.13	1.17		23.1%	20.5%	2.6%		.231	1.83	.313	79.5%		122	172		8.21
2026	MIA	MiLB	11.57	9.26	1.25	0.77		25.7%	20.6%	5.1%		.192	1.71	.273	58.7%		114	130		6.96
2026	Steamer	ROS	5.77	8.25	0.70	1.08		13.0%	18.6%	-5.6%		.272	1.99	.300	70.4%					6.33
2026	OOPSY	ROS	6.83	6.25	1.09	1.20		15.1%	13.8%	1.3%		.266	1.83	.296	71.7%					5.63