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, 3 months, 24 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	7.81	6.23	4.92
2026	CHW	A	24	0	0	0	1	0	1.2		0.00	5.40	0.00	.000	100.0%	33.3%	0.0%				0.00		5.46	5.46
2026	---	MiLB	24	3	2	2	21	0	36.1		9.66	3.47	0.99	.321	69.1%	45.7%	18.2%				4.21	7.81	4.83	4.29
2026	Steamer	ROS	24	0	0	0	1	0	1.0		5.78	6.22	1.26	.296	71.2%						5.46		5.86		0.0
2026	OOPSY	ROS	24	0	0	0	1	0	1.7		5.60	3.86	1.26	.288	62.1%						5.31		5.13		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	7.81	6.23	4.92
2026	CHW	A	24	0	0	0	1	0	1.2		0.00	5.40	0.00	.000	100.0%	33.3%	0.0%				0.00		5.46	5.46
2026	---	MiLB	24	3	2	2	21	0	36.1		9.66	3.47	0.99	.321	69.1%	45.7%	18.2%				4.21	7.81	4.83	4.29
2026	Steamer	ROS	24	0	0	0	1	0	1.0		5.78	6.22	1.26	.296	71.2%						5.46		5.86		0.0
2026	OOPSY	ROS	24	0	0	0	1	0	1.7		5.60	3.86	1.26	.288	62.1%						5.31		5.13		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	1	0		0	0	0	0	0	1.2	4	0	0	0	0	1	0	0	0	0	0
2026	---	MiLB	3	2	4.21	21	0		0	0	2	0	1	36.1	143	30	19	17	4	14	0	5	3	3	39
2026	Steamer	ROS	0	0	5.46	1	0	0	0	0	0	0		1.0	5	1	1	1	0	1		0			1
2026	OOPSY	ROS	0	0	5.31	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	1	0		0	0	0	0	0	1.2	4	0	0	0	0	1	0	0	0	0	0
2026	---	MiLB	3	2	4.21	21	0		0	0	2	0	1	36.1	143	30	19	17	4	14	0	5	3	3	39
2026	Steamer	ROS	0	0	5.46	1	0	0	0	0	0	0		1.0	5	1	1	1	0	1		0			1
2026	OOPSY	ROS	0	0	5.31	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	0.00	5.40	0.00	0.00		0.0%	25.0%	-25.0%		.000	0.60	.000	100.0%		0	115		5.46
2026	---	MiLB	9.66	3.47	2.79	0.99		27.3%	9.8%	17.5%		.242	1.21	.321	69.1%		81	95		4.83
2026	Steamer	ROS	5.78	6.22	0.93	1.26		13.6%	14.7%	-1.0%		.273	1.77	.296	71.2%					5.86
2026	OOPSY	ROS	5.60	3.86	1.45	1.26		15.3%	10.6%	4.8%		.266	1.38	.288	62.1%					5.13

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	0.00	5.40	0.00	0.00		0.0%	25.0%	-25.0%		.000	0.60	.000	100.0%		0	115		5.46
2026	---	MiLB	9.66	3.47	2.79	0.99		27.3%	9.8%	17.5%		.242	1.21	.321	69.1%		81	95		4.83
2026	Steamer	ROS	5.78	6.22	0.93	1.26		13.6%	14.7%	-1.0%		.273	1.77	.296	71.2%					5.86
2026	OOPSY	ROS	5.60	3.86	1.45	1.26		15.3%	10.6%	4.8%		.266	1.38	.288	62.1%					5.13