Pitching

Luis Fonseca

Chicago White Sox (A)

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Age: 24

Bats/Throws: L/L

5'2" / 217

DOB: 5/9/2002

(24 years, 4 months, 2 days)

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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
2025	TOR	DSL	23	1	5	0	11	11	39.0		9.23	1.85	0.46	.367	55.8%	60.4%	6.5%				3.00		3.49	3.37
2026	TOR	CPX	24	1	2	1	9	0	16.1		11.57	1.65	0.55	.436	68.0%	47.4%	7.7%				3.86		3.19	3.46
2026	TOR	A	24	2	0	1	11	0	18.1		8.84	4.91	1.47	.231	68.8%	45.0%	33.3%				4.91	7.84	6.23	4.92
2026	CHW	A	24	0	0	0	3	0	4.2		9.64	3.86	0.00	.125	100.0%	37.5%	0.0%				0.00		2.80	2.80
2026	---	MiLB	24	3	2	2	23	0	39.1		10.07	3.43	0.92	.314	70.5%	45.3%	18.2%				3.89	7.84	4.56	4.06
2026	Steamer	ROS	24	0	0	0	1	0	1.0		5.85	6.16	1.22	.297	71.2%						5.38		5.77		0.0
2026	OOPSY	ROS	24	0	0	0	1	0	1.7		5.83	3.83	1.22	.289	62.4%						5.20		5.03		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
2025	TOR	DSL	23	1	5	0	11	11	39.0		9.23	1.85	0.46	.367	55.8%	60.4%	6.5%				3.00		3.49	3.37
2026	TOR	CPX	24	1	2	1	9	0	16.1		11.57	1.65	0.55	.436	68.0%	47.4%	7.7%				3.86		3.19	3.46
2026	TOR	A	24	2	0	1	11	0	18.1		8.84	4.91	1.47	.231	68.8%	45.0%	33.3%				4.91	7.84	6.23	4.92
2026	CHW	A	24	0	0	0	3	0	4.2		9.64	3.86	0.00	.125	100.0%	37.5%	0.0%				0.00		2.80	2.80
2026	---	MiLB	24	3	2	2	23	0	39.1		10.07	3.43	0.92	.314	70.5%	45.3%	18.2%				3.89	7.84	4.56	4.06
2026	Steamer	ROS	24	0	0	0	1	0	1.0		5.85	6.16	1.22	.297	71.2%						5.38		5.77		0.0
2026	OOPSY	ROS	24	0	0	0	1	0	1.7		5.83	3.83	1.22	.289	62.4%						5.20		5.03		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
2025	TOR	DSL	1	5	3.00	11	11		0	0	0	0	0	39.0	162	42	25	13	2	8	0	3	3	1	40
2026	TOR	CPX	1	2	3.86	9	0		0	0	1	0	0	16.1	65	18	8	7	1	3	0	1	0	2	21
2026	TOR	A	2	0	4.91	11	0		0	0	1	0	1	18.1	74	12	11	10	3	10	0	4	3	1	18
2026	CHW	A	0	0	0.00	3	0		0	0	0	0	0	4.2	15	1	0	0	0	2	0	0	0	0	5
2026	---	MiLB	3	2	3.89	23	0		0	0	2	0	1	39.1	154	31	19	17	4	15	0	5	3	3	44
2026	Steamer	ROS	0	0	5.38	1	0	0	0	0	0	0		1.0	5	1	1	1	0	1		0			1
2026	OOPSY	ROS	0	0	5.20	1	0	0			0	0		1.7	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
2025	TOR	DSL	1	5	3.00	11	11		0	0	0	0	0	39.0	162	42	25	13	2	8	0	3	3	1	40
2026	TOR	CPX	1	2	3.86	9	0		0	0	1	0	0	16.1	65	18	8	7	1	3	0	1	0	2	21
2026	TOR	A	2	0	4.91	11	0		0	0	1	0	1	18.1	74	12	11	10	3	10	0	4	3	1	18
2026	CHW	A	0	0	0.00	3	0		0	0	0	0	0	4.2	15	1	0	0	0	2	0	0	0	0	5
2026	---	MiLB	3	2	3.89	23	0		0	0	2	0	1	39.1	154	31	19	17	4	15	0	5	3	3	44
2026	Steamer	ROS	0	0	5.38	1	0	0	0	0	0	0		1.0	5	1	1	1	0	1		0			1
2026	OOPSY	ROS	0	0	5.20	1	0	0			0	0		1.7	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
2025	TOR	DSL	9.23	1.85	5.00	0.46		24.7%	4.9%	19.8%		.278	1.28	.367	55.8%		57	66		3.49
2026	TOR	CPX	11.57	1.65	7.00	0.55		32.3%	4.6%	27.7%		.295	1.29	.436	68.0%		69	57		3.19
2026	TOR	A	8.84	4.91	1.80	1.47		24.3%	13.5%	10.8%		.200	1.20	.231	68.8%		100	126		6.23
2026	CHW	A	9.64	3.86	2.50	0.00		33.3%	13.3%	20.0%		.077	0.64	.125	100.0%		0	59		2.80
2026	---	MiLB	10.07	3.43	2.93	0.92		28.6%	9.7%	18.8%		.231	1.17	.314	70.5%		75	89		4.56
2026	Steamer	ROS	5.85	6.16	0.95	1.22		13.9%	14.6%	-0.7%		.272	1.76	.297	71.2%					5.77
2026	OOPSY	ROS	5.83	3.83	1.52	1.22		16.1%	10.6%	5.5%		.263	1.36	.289	62.4%					5.03

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
2025	TOR	DSL	9.23	1.85	5.00	0.46		24.7%	4.9%	19.8%		.278	1.28	.367	55.8%		57	66		3.49
2026	TOR	CPX	11.57	1.65	7.00	0.55		32.3%	4.6%	27.7%		.295	1.29	.436	68.0%		69	57		3.19
2026	TOR	A	8.84	4.91	1.80	1.47		24.3%	13.5%	10.8%		.200	1.20	.231	68.8%		100	126		6.23
2026	CHW	A	9.64	3.86	2.50	0.00		33.3%	13.3%	20.0%		.077	0.64	.125	100.0%		0	59		2.80
2026	---	MiLB	10.07	3.43	2.93	0.92		28.6%	9.7%	18.8%		.231	1.17	.314	70.5%		75	89		4.56
2026	Steamer	ROS	5.85	6.16	0.95	1.22		13.9%	14.6%	-0.7%		.272	1.76	.297	71.2%					5.77
2026	OOPSY	ROS	5.83	3.83	1.52	1.22		16.1%	10.6%	5.5%		.263	1.36	.289	62.4%					5.03