William Kempner

Miami Marlins (AAA)

Age: 24

Bats/Throws: R/R

6'0" / 222

DOB: 6/18/2001

(24 years, 11 months, 2 days)

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Stats

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingMLB Regular SeasonCollege

Season	Team	Level	Age	W W - Wins	L L - Losses	SV SV - Saves	G G - Games Pitched	GS GS - Games Started	IP IP - Innings Pitched	K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP)	BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP)	HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP)	BABIP BABIP - Batting Average on Balls in Play	LOB% LOB% - Left on Base Percentage	GB% GB% - Ground Ball Percentage (GB/BIP)	HR/FB HR/FB - Home Run to Fly Ball Ratio	vFA vFA - Fourseam Fastball velocity (Pitch Info)	ERA ERA - Earned Run Average ((ER*9)/IP)	xERA xERA - Expected ERA	FIP FIP - Fielder Independent Pitching on an ERA scale	xFIP xFIP - Expected Fielder Independent Pitching where Home Runs are calculated as 10.5% of Fly Balls induced	WAR WAR - Wins Above Replacement
2021	GONZ	NCAA	20	3	3	1	11	9	40.2	7.52	6.42	0.66	.246	72.8%				3.10		5.66
2022	GONZ	NCAA	21	2	1	0	8	8	36.0	12.00	5.25	0.50	.291	76.2%				3.00		4.53
2022	SFG	CPX	21	1	0	0	2	0	3.1	13.50	5.40	0.00	.500	83.3%	71.4%	0.0%		2.70		3.05	3.05
2022	SFG	A	21	0	0	0	3	2	5.2	9.53	6.35	1.59	.333	75.5%	25.0%	12.5%		6.35		7.50	7.15
2022	SFG	MiLB	21	1	0	0	5	2	9.0	11.00	6.00	1.00	.391	78.3%	39.1%	12.5%		5.00		5.85	5.63
2023	SFG	A	22	1	3	1	14	5	27.0	9.67	5.00	0.00	.280	56.1%	45.7%	0.0%		4.67		4.18	5.27
2023	SFG	A+	22	3	2	0	23	0	34.0	12.44	3.44	1.32	.311	79.5%	44.3%	17.2%		2.91		4.44	3.77
2023	SFG	AA	22	0	0	0	1	0	1.2	10.80	10.80	0.00	.500	80.0%	16.7%	0.0%		5.40		4.48	6.21
2023	SFG	MiLB	22	4	5	1	38	5	62.2	11.20	4.31	0.72	.303	68.2%	43.9%	8.3%		3.73		4.33	4.48
2025	MIA	A+	24	1	2	6	19	0	26.2	13.16	3.38	0.00	.322	65.6%	50.0%	0.0%		3.04		1.95	2.46
2025	MIA	AA	24	3	1	0	16	0	24.0	11.63	5.63	0.00	.229	85.7%	43.8%	0.0%		1.13		2.73	3.49
2025	MIA	AAA	24	3	0	1	13	0	17.0	13.24	7.94	1.06	.194	90.5%	34.4%	12.5%		2.65		5.26	5.34
2025	MIA	MiLB	24	7	3	7	48	0	67.2	12.64	5.32	0.27	.261	79.3%	44.1%	4.3%		2.26		3.06	3.55
2025	MIA	ST	24	0	0	0	4	0	2.2	13.50	3.38	3.38	.333	83.3%	14.3%	25.0%		6.75		7.86	5.64
2026	MIA	ST	25	0	0	1	4	0	4.0	13.50	4.50	0.00	.143	100.0%	28.6%	0.0%		0.00		2.90	4.77
2026	FGDC	PROJ	25	1	2	0	24	0	24.0	8.49	4.85	1.19	.293	69.9%				4.77		4.88		0.0
2026	Steamer	PROJ	25	1	1	0	24	0	24.0	8.42	4.62	1.11	.297	72.1%	42.2%			4.46		4.58	4.64	-0.1
2026	ZiPS	PROJ	25	4	5	0	43	1	56.7	8.57	5.08	1.27	.288	67.8%				5.08		5.18		-0.4
2026	ZiPS DC	PROJ	25	2	2	0	24	0	24.0	8.57	5.08	1.27	.288	67.8%				5.08		5.18		-0.1
2026	ATC	PROJ	25	1	2	0	18	0	19.0	8.65	4.81	1.12	.293	69.5%				4.71		4.65		-0.1
2026	OOPSY	PROJ	25	1	1	0	24	0	24.0	9.84	4.80	1.07	.288	74.5%				4.03		4.26		0.0
2026	MIA	AAA	25	0	3	4	16	0	22.1	16.12	5.24	1.21	.278	68.5%	25.6%	15.8%		4.43		3.83	3.68
2026	MIA	MLB	25	0	0	0	1	0	1.0	9.00	0.00	0.00	.000	100.0%	50.0%	0.0%	98.0	0.00	0.61	1.11	2.52	0.0
2026	FGDC	ROS	25	1	2	0	28	0	28.0	8.98	5.00	1.15	.298	70.3%				4.69		4.77		-0.1
2026	Steamer	ROS	25	1	1	0	28	0	28.0	9.32	4.96	1.03	.294	72.9%				4.25		4.40		0.0
2026	ZiPS	ROS	25	2	3		25	1	33.0	8.64	5.05	1.26	.301	67.8%				5.13		5.14		-0.3
2026	ZiPS DC	ROS	25	2	3	0	28	0	28.0	8.64	5.05	1.26	.301	67.8%				5.13		5.14		-0.1
2026	ATC DC	ROS	25	1	2	0	28	0	28.0	9.51	4.89	1.03	.296	70.6%				4.44		4.33		0.0
2026	OOPSY	ROS	25	2	1	0	28	0	28.0	11.19	4.53	0.95	.271	77.8%				3.25		3.69		0.1
Total	- - -	MLB		0	0	0	1	0	1.0	9.00	0.00	0.00	.000	100.0%	50.0%	0.0%	98.0	0.00	0.61	1.11	2.52	0.0

Season	Team	Level	Age	W W - Wins	L L - Losses	SV SV - Saves	G G - Games Pitched	GS GS - Games Started	IP IP - Innings Pitched	K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP)	BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP)	HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP)	BABIP BABIP - Batting Average on Balls in Play	LOB% LOB% - Left on Base Percentage	GB% GB% - Ground Ball Percentage (GB/BIP)	HR/FB HR/FB - Home Run to Fly Ball Ratio	vFA vFA - Fourseam Fastball velocity (Pitch Info)	ERA ERA - Earned Run Average ((ER*9)/IP)	xERA xERA - Expected ERA	FIP FIP - Fielder Independent Pitching on an ERA scale	xFIP xFIP - Expected Fielder Independent Pitching where Home Runs are calculated as 10.5% of Fly Balls induced	WAR WAR - Wins Above Replacement
2021	GONZ	NCAA	20	3	3	1	11	9	40.2	7.52	6.42	0.66	.246	72.8%				3.10		5.66
2022	GONZ	NCAA	21	2	1	0	8	8	36.0	12.00	5.25	0.50	.291	76.2%				3.00		4.53
2022	SFG	CPX	21	1	0	0	2	0	3.1	13.50	5.40	0.00	.500	83.3%	71.4%	0.0%		2.70		3.05	3.05
2022	SFG	A	21	0	0	0	3	2	5.2	9.53	6.35	1.59	.333	75.5%	25.0%	12.5%		6.35		7.50	7.15
2022	SFG	MiLB	21	1	0	0	5	2	9.0	11.00	6.00	1.00	.391	78.3%	39.1%	12.5%		5.00		5.85	5.63
2023	SFG	A	22	1	3	1	14	5	27.0	9.67	5.00	0.00	.280	56.1%	45.7%	0.0%		4.67		4.18	5.27
2023	SFG	A+	22	3	2	0	23	0	34.0	12.44	3.44	1.32	.311	79.5%	44.3%	17.2%		2.91		4.44	3.77
2023	SFG	AA	22	0	0	0	1	0	1.2	10.80	10.80	0.00	.500	80.0%	16.7%	0.0%		5.40		4.48	6.21
2023	SFG	MiLB	22	4	5	1	38	5	62.2	11.20	4.31	0.72	.303	68.2%	43.9%	8.3%		3.73		4.33	4.48
2025	MIA	A+	24	1	2	6	19	0	26.2	13.16	3.38	0.00	.322	65.6%	50.0%	0.0%		3.04		1.95	2.46
2025	MIA	AA	24	3	1	0	16	0	24.0	11.63	5.63	0.00	.229	85.7%	43.8%	0.0%		1.13		2.73	3.49
2025	MIA	AAA	24	3	0	1	13	0	17.0	13.24	7.94	1.06	.194	90.5%	34.4%	12.5%		2.65		5.26	5.34
2025	MIA	MiLB	24	7	3	7	48	0	67.2	12.64	5.32	0.27	.261	79.3%	44.1%	4.3%		2.26		3.06	3.55
2025	MIA	ST	24	0	0	0	4	0	2.2	13.50	3.38	3.38	.333	83.3%	14.3%	25.0%		6.75		7.86	5.64
2026	MIA	ST	25	0	0	1	4	0	4.0	13.50	4.50	0.00	.143	100.0%	28.6%	0.0%		0.00		2.90	4.77
2026	FGDC	PROJ	25	1	2	0	24	0	24.0	8.49	4.85	1.19	.293	69.9%				4.77		4.88		0.0
2026	Steamer	PROJ	25	1	1	0	24	0	24.0	8.42	4.62	1.11	.297	72.1%	42.2%			4.46		4.58	4.64	-0.1
2026	ZiPS	PROJ	25	4	5	0	43	1	56.7	8.57	5.08	1.27	.288	67.8%				5.08		5.18		-0.4
2026	ZiPS DC	PROJ	25	2	2	0	24	0	24.0	8.57	5.08	1.27	.288	67.8%				5.08		5.18		-0.1
2026	ATC	PROJ	25	1	2	0	18	0	19.0	8.65	4.81	1.12	.293	69.5%				4.71		4.65		-0.1
2026	OOPSY	PROJ	25	1	1	0	24	0	24.0	9.84	4.80	1.07	.288	74.5%				4.03		4.26		0.0
2026	MIA	AAA	25	0	3	4	16	0	22.1	16.12	5.24	1.21	.278	68.5%	25.6%	15.8%		4.43		3.83	3.68
2026	MIA	MLB	25	0	0	0	1	0	1.0	9.00	0.00	0.00	.000	100.0%	50.0%	0.0%	98.0	0.00	0.61	1.11	2.52	0.0
2026	FGDC	ROS	25	1	2	0	28	0	28.0	8.98	5.00	1.15	.298	70.3%				4.69		4.77		-0.1
2026	Steamer	ROS	25	1	1	0	28	0	28.0	9.32	4.96	1.03	.294	72.9%				4.25		4.40		0.0
2026	ZiPS	ROS	25	2	3		25	1	33.0	8.64	5.05	1.26	.301	67.8%				5.13		5.14		-0.3
2026	ZiPS DC	ROS	25	2	3	0	28	0	28.0	8.64	5.05	1.26	.301	67.8%				5.13		5.14		-0.1
2026	ATC DC	ROS	25	1	2	0	28	0	28.0	9.51	4.89	1.03	.296	70.6%				4.44		4.33		0.0
2026	OOPSY	ROS	25	2	1	0	28	0	28.0	11.19	4.53	0.95	.271	77.8%				3.25		3.69		0.1
Total	- - -	MLB		0	0	0	1	0	1.0	9.00	0.00	0.00	.000	100.0%	50.0%	0.0%	98.0	0.00	0.61	1.11	2.52	0.0

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingMLB Regular SeasonCollege

Season	Team	Level	W W - Wins	L L - Losses	ERA ERA - Earned Run Average ((ER*9)/IP)	G G - Games Pitched	GS GS - Games Started	QS QS - Quality Starts; pitched at least 6 innings and gave up 3 or fewer earned runs	CG CG - Complete Games	ShO ShO - Shoutouts	SV SV - Saves	HLD HLD - Holds	BS BS - Blown Saves	IP IP - Innings Pitched	TBF TBF - Total Batters Faced	H H - Hits Allowed	R R - Runs Allowed	ER ER - Earned Runs	HR HR - Home Runs	BB BB - Walks	IBB IBB - Intentional	HBP HBP - Hit Batters	WP WP - Wild Pitches	BK BK - Balks	SO SO - Strikeouts
2021	GONZ	NCAA	3	3	3.10	11	9		0	0	1			40.2	186	31	21	14	3	29		6	5	0	34
2022	GONZ	NCAA	2	1	3.00	8	8		0	0	0			36.0	158	25	15	12	2	21		8	3	0	48
2022	SFG	CPX	1	0	2.70	2	0		0	0	0	0	0	3.1	15	4	1	1	0	2	0	0	3	0	5
2022	SFG	A	0	0	6.35	3	2		0	0	0	0	0	5.2	28	6	4	4	1	4	0	2	0	0	6
2022	SFG	MiLB	1	0	5.00	5	2		0	0	0	0	0	9.0	43	10	5	5	1	6	0	2	3	0	11
2023	SFG	A	1	3	4.67	14	5		0	0	1	1	0	27.0	124	21	18	14	0	15	0	5	2	0	29
2023	SFG	A+	3	2	2.91	23	0		0	0	0	2	3	34.0	144	28	15	11	5	13	0	5	5	0	47
2023	SFG	AA	0	0	5.40	1	0		0	0	0	0	0	1.2	10	3	1	1	0	2	0	0	0	0	2
2023	SFG	MiLB	4	5	3.73	38	5		0	0	1	3	3	62.2	278	52	34	26	5	30	0	10	7	0	78
2025	MIA	A+	1	2	3.04	19	0		0	0	6	0	0	26.2	111	19	11	9	0	10	0	3	2	1	39
2025	MIA	AA	3	1	1.13	16	0		0	0	0	1	0	24.0	96	11	4	3	0	15	0	2	1	0	31
2025	MIA	AAA	3	0	2.65	13	0		0	0	1	0	0	17.0	76	8	5	5	2	15	0	3	1	0	25
2025	MIA	MiLB	7	3	2.26	48	0		0	0	7	1	0	67.2	283	38	20	17	2	40	0	8	4	1	95
2025	MIA	ST	0	0	6.75	4	0		0	0	0	0	0	2.2	13	3	2	2	1	1	0	1	1	0	4
2026	MIA	ST	0	0	0.00	4	0		0	0	1	3	0	4.0	16	1	0	0	0	2	0	1	0	0	6
2026	FGDC	PROJ	1	2	4.77	24	0	0			0	1		24.0	108	23	14	13	3	13		2			23
2026	Steamer	PROJ	1	1	4.46	24	0	0	0	0	0	1		24.0	106	23	13	12	3	12	1	1			22
2026	ZiPS	PROJ	4	5	5.08	43	1				0	0		56.7	258	53	35	32	8	32	0	8	5	1	54
2026	ZiPS DC	PROJ	2	2	5.08	24	0	0			0	1		24.0	109	22	15	14	3	14		3			23
2026	ATC	PROJ	1	2	4.71	18	0	0			0	1		19.0	84	18	11	10	2	10	0	1			18
2026	OOPSY	PROJ	1	1	4.03	24	0	0			0	1		24.0	108	22	12	11	3	13		1			26
2026	MIA	AAA	0	3	4.43	16	0		0	0	4	2	1	22.1	95	13	12	11	3	13	1	3	2	0	40
2026	MIA	MLB	0	0	0.00	1	0	0	0	0	0	0	0	1.0	3	0	0	0	0	0	0	0	0	0	1
2026	FGDC	ROS	1	2	4.69	28	0	0			0	0		28.0	124	26	16	15	4	16		3			28
2026	Steamer	ROS	1	1	4.25	28	0	0	0	0	0	0		28.0	123	25	14	13	3	15		2			29
2026	ZiPS	ROS	2	3	5.13	25	1							33.0	146	31	20	19	5	18		5			31
2026	ZiPS DC	ROS	2	3	5.13	28	0	0			0	0		28.0	125	26	17	16	4	16		4			27
2026	ATC DC	ROS	1	2	4.44	28	0	0			0	0		28.0	123	25	15	14	3	15		2			29
2026	OOPSY	ROS	2	1	3.25	28	0	0			0	0		28.0	120	21	11	10	3	14		1			35
Total	- - -	MLB	0	0	0.00	1	0	0	0	0	0	0	0	1.0	3	0	0	0	0	0	0	0	0	0	1

Season	Team	Level	W W - Wins	L L - Losses	ERA ERA - Earned Run Average ((ER*9)/IP)	G G - Games Pitched	GS GS - Games Started	QS QS - Quality Starts; pitched at least 6 innings and gave up 3 or fewer earned runs	CG CG - Complete Games	ShO ShO - Shoutouts	SV SV - Saves	HLD HLD - Holds	BS BS - Blown Saves	IP IP - Innings Pitched	TBF TBF - Total Batters Faced	H H - Hits Allowed	R R - Runs Allowed	ER ER - Earned Runs	HR HR - Home Runs	BB BB - Walks	IBB IBB - Intentional	HBP HBP - Hit Batters	WP WP - Wild Pitches	BK BK - Balks	SO SO - Strikeouts
2021	GONZ	NCAA	3	3	3.10	11	9		0	0	1			40.2	186	31	21	14	3	29		6	5	0	34
2022	GONZ	NCAA	2	1	3.00	8	8		0	0	0			36.0	158	25	15	12	2	21		8	3	0	48
2022	SFG	CPX	1	0	2.70	2	0		0	0	0	0	0	3.1	15	4	1	1	0	2	0	0	3	0	5
2022	SFG	A	0	0	6.35	3	2		0	0	0	0	0	5.2	28	6	4	4	1	4	0	2	0	0	6
2022	SFG	MiLB	1	0	5.00	5	2		0	0	0	0	0	9.0	43	10	5	5	1	6	0	2	3	0	11
2023	SFG	A	1	3	4.67	14	5		0	0	1	1	0	27.0	124	21	18	14	0	15	0	5	2	0	29
2023	SFG	A+	3	2	2.91	23	0		0	0	0	2	3	34.0	144	28	15	11	5	13	0	5	5	0	47
2023	SFG	AA	0	0	5.40	1	0		0	0	0	0	0	1.2	10	3	1	1	0	2	0	0	0	0	2
2023	SFG	MiLB	4	5	3.73	38	5		0	0	1	3	3	62.2	278	52	34	26	5	30	0	10	7	0	78
2025	MIA	A+	1	2	3.04	19	0		0	0	6	0	0	26.2	111	19	11	9	0	10	0	3	2	1	39
2025	MIA	AA	3	1	1.13	16	0		0	0	0	1	0	24.0	96	11	4	3	0	15	0	2	1	0	31
2025	MIA	AAA	3	0	2.65	13	0		0	0	1	0	0	17.0	76	8	5	5	2	15	0	3	1	0	25
2025	MIA	MiLB	7	3	2.26	48	0		0	0	7	1	0	67.2	283	38	20	17	2	40	0	8	4	1	95
2025	MIA	ST	0	0	6.75	4	0		0	0	0	0	0	2.2	13	3	2	2	1	1	0	1	1	0	4
2026	MIA	ST	0	0	0.00	4	0		0	0	1	3	0	4.0	16	1	0	0	0	2	0	1	0	0	6
2026	FGDC	PROJ	1	2	4.77	24	0	0			0	1		24.0	108	23	14	13	3	13		2			23
2026	Steamer	PROJ	1	1	4.46	24	0	0	0	0	0	1		24.0	106	23	13	12	3	12	1	1			22
2026	ZiPS	PROJ	4	5	5.08	43	1				0	0		56.7	258	53	35	32	8	32	0	8	5	1	54
2026	ZiPS DC	PROJ	2	2	5.08	24	0	0			0	1		24.0	109	22	15	14	3	14		3			23
2026	ATC	PROJ	1	2	4.71	18	0	0			0	1		19.0	84	18	11	10	2	10	0	1			18
2026	OOPSY	PROJ	1	1	4.03	24	0	0			0	1		24.0	108	22	12	11	3	13		1			26
2026	MIA	AAA	0	3	4.43	16	0		0	0	4	2	1	22.1	95	13	12	11	3	13	1	3	2	0	40
2026	MIA	MLB	0	0	0.00	1	0	0	0	0	0	0	0	1.0	3	0	0	0	0	0	0	0	0	0	1
2026	FGDC	ROS	1	2	4.69	28	0	0			0	0		28.0	124	26	16	15	4	16		3			28
2026	Steamer	ROS	1	1	4.25	28	0	0	0	0	0	0		28.0	123	25	14	13	3	15		2			29
2026	ZiPS	ROS	2	3	5.13	25	1							33.0	146	31	20	19	5	18		5			31
2026	ZiPS DC	ROS	2	3	5.13	28	0	0			0	0		28.0	125	26	17	16	4	16		4			27
2026	ATC DC	ROS	1	2	4.44	28	0	0			0	0		28.0	123	25	15	14	3	15		2			29
2026	OOPSY	ROS	2	1	3.25	28	0	0			0	0		28.0	120	21	11	10	3	14		1			35
Total	- - -	MLB	0	0	0.00	1	0	0	0	0	0	0	0	1.0	3	0	0	0	0	0	0	0	0	0	1

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingMLB Regular SeasonAveragesCollege

Season	Team	Level	K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP)	BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP)	K/BB K/BB - Strikeout to Walk Ratio (SO/BB)	HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP)	K% K% - Strikeout Percentage (SO/TBF)	BB% BB% - Walk Percentage (BB/TBF)	K-BB% K-BB% - The difference between strikeout percentage and walk percentage	AVG AVG - Batting Average Against	WHIP WHIP - Walks + Hits divided by Innings Pitched	BABIP BABIP - Batting Average on Balls in Play	LOB% LOB% - Left on Base Percentage	ERA- ERA- - ERA adjusted for park and league where 100 is average and lower is better	FIP- FIP- - FIP adjusted for park and league where 100 is average and lower is better	FIP FIP - Fielder Independent Pitching on an ERA scale
2021	GONZ	NCAA	7.52	6.42	1.17	0.66	18.3%	15.6%	2.7%	.205	1.48	.246	72.8%			5.66
2022	GONZ	NCAA	12.00	5.25	2.29	0.50	30.4%	13.3%	17.1%	.194	1.28	.291	76.2%			4.53
2022	SFG	CPX	13.50	5.40	2.50	0.00	33.3%	13.3%	20.0%	.308	1.80	.500	83.3%	60	68	3.05
2022	SFG	A	9.53	6.35	1.50	1.59	21.4%	14.3%	7.1%	.273	1.76	.333	75.5%	121	142	7.50
2022	SFG	MiLB	11.00	6.00	1.83	1.00	25.6%	14.0%	11.6%	.286	1.78	.391	78.3%	99	114	5.85
2023	SFG	A	9.67	5.00	1.93	0.00	23.4%	12.1%	11.3%	.202	1.33	.280	56.1%	98	87	4.18
2023	SFG	A+	12.44	3.44	3.62	1.32	32.6%	9.0%	23.6%	.222	1.21	.311	79.5%	68	102	4.44
2023	SFG	AA	10.80	10.80	1.00	0.00	20.0%	20.0%	0.0%	.375	3.00	.500	80.0%	128	105	4.48
2023	SFG	MiLB	11.20	4.31	2.60	0.72	28.1%	10.8%	17.3%	.218	1.31	.303	68.2%	83	96	4.33
2025	MIA	A+	13.16	3.38	3.90	0.00	35.1%	9.0%	26.1%	.194	1.09	.322	65.6%	77	50	1.95
2025	MIA	AA	11.63	5.63	2.07	0.00	32.3%	15.6%	16.7%	.139	1.08	.229	85.7%	30	73	2.73
2025	MIA	AAA	13.24	7.94	1.67	1.06	32.9%	19.7%	13.2%	.138	1.35	.194	90.5%	60	117	5.26
2025	MIA	MiLB	12.64	5.32	2.38	0.27	33.6%	14.1%	19.4%	.162	1.15	.261	79.3%	56	75	3.06
2025	MIA	ST	13.50	3.38	4.00	3.38	30.8%	7.7%	23.1%	.273	1.50	.333	83.3%	139	163	7.86
2026	MIA	ST	13.50	4.50	3.00	0.00	37.5%	12.5%	25.0%	.077	0.75	.143	100.0%	0	60	2.90
2026	FGDC	PROJ	8.49	4.85	1.75	1.19	21.0%	12.0%	9.0%	.245	1.48	.293	69.9%			4.88
2026	Steamer	PROJ	8.42	4.62	1.82	1.11	21.1%	11.6%	9.5%	.247	1.47	.297	72.1%			4.58
2026	ZiPS	PROJ	8.57	5.08	1.69	1.27	20.9%	12.4%	8.5%	.243	1.50	.288	67.8%			5.18
2026	ZiPS DC	PROJ	8.57	5.08	1.69	1.27	20.9%	12.4%	8.5%	.243	1.50	.288	67.8%			5.18
2026	ATC	PROJ	8.65	4.81	1.80	1.12	21.6%	12.0%	9.6%	.242	1.47	.293	69.5%			4.65
2026	OOPSY	PROJ	9.84	4.80	2.05	1.07	24.3%	11.9%	12.4%	.229	1.43	.288	74.5%			4.26
2026	MIA	AAA	16.12	5.24	3.08	1.21	42.1%	13.7%	28.4%	.165	1.16	.278	68.5%	96	81	3.83
2026	MIA	MLB	9.00	0.00	1.00	0.00	33.3%	0.0%	33.3%	.000	0.00	.000	100.0%	0	27	1.11
2026			8.48	3.62	2.34	1.07	22.1%	9.4%	12.6%	.238	1.31	.286	72.0%			4.21
2026	FGDC	ROS	8.98	5.00	1.79	1.15	22.4%	12.5%	9.9%	.243	1.48	.298	70.3%			4.77
2026	Steamer	ROS	9.32	4.96	1.88	1.03	23.4%	12.5%	11.0%	.235	1.45	.294	72.9%			4.40
2026	ZiPS	ROS	8.64	5.05	1.71	1.26	21.4%	12.5%	8.9%	.251	1.51	.301	67.8%			5.14
2026	ZiPS DC	ROS	8.64	5.05	1.71	1.26	21.4%	12.5%	8.9%	.251	1.51	.301	67.8%			5.14
2026	ATC DC	ROS	9.51	4.89	1.95	1.03	24.0%	12.3%	11.7%	.235	1.44	.296	70.6%			4.33
2026	OOPSY	ROS	11.19	4.53	2.47	0.95	29.0%	11.7%	17.3%	.202	1.26	.271	77.8%			3.69
Total	- - -	MLB	9.00	0.00	1.00	0.00	33.3%	0.0%	33.3%	.000	0.00	.000	100.0%	0	27	1.11

Season	Team	Level	K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP)	BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP)	K/BB K/BB - Strikeout to Walk Ratio (SO/BB)	HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP)	K% K% - Strikeout Percentage (SO/TBF)	BB% BB% - Walk Percentage (BB/TBF)	K-BB% K-BB% - The difference between strikeout percentage and walk percentage	AVG AVG - Batting Average Against	WHIP WHIP - Walks + Hits divided by Innings Pitched	BABIP BABIP - Batting Average on Balls in Play	LOB% LOB% - Left on Base Percentage	ERA- ERA- - ERA adjusted for park and league where 100 is average and lower is better	FIP- FIP- - FIP adjusted for park and league where 100 is average and lower is better	FIP FIP - Fielder Independent Pitching on an ERA scale
2021	GONZ	NCAA	7.52	6.42	1.17	0.66	18.3%	15.6%	2.7%	.205	1.48	.246	72.8%			5.66
2022	GONZ	NCAA	12.00	5.25	2.29	0.50	30.4%	13.3%	17.1%	.194	1.28	.291	76.2%			4.53
2022	SFG	CPX	13.50	5.40	2.50	0.00	33.3%	13.3%	20.0%	.308	1.80	.500	83.3%	60	68	3.05
2022	SFG	A	9.53	6.35	1.50	1.59	21.4%	14.3%	7.1%	.273	1.76	.333	75.5%	121	142	7.50
2022	SFG	MiLB	11.00	6.00	1.83	1.00	25.6%	14.0%	11.6%	.286	1.78	.391	78.3%	99	114	5.85
2023	SFG	A	9.67	5.00	1.93	0.00	23.4%	12.1%	11.3%	.202	1.33	.280	56.1%	98	87	4.18
2023	SFG	A+	12.44	3.44	3.62	1.32	32.6%	9.0%	23.6%	.222	1.21	.311	79.5%	68	102	4.44
2023	SFG	AA	10.80	10.80	1.00	0.00	20.0%	20.0%	0.0%	.375	3.00	.500	80.0%	128	105	4.48
2023	SFG	MiLB	11.20	4.31	2.60	0.72	28.1%	10.8%	17.3%	.218	1.31	.303	68.2%	83	96	4.33
2025	MIA	A+	13.16	3.38	3.90	0.00	35.1%	9.0%	26.1%	.194	1.09	.322	65.6%	77	50	1.95
2025	MIA	AA	11.63	5.63	2.07	0.00	32.3%	15.6%	16.7%	.139	1.08	.229	85.7%	30	73	2.73
2025	MIA	AAA	13.24	7.94	1.67	1.06	32.9%	19.7%	13.2%	.138	1.35	.194	90.5%	60	117	5.26
2025	MIA	MiLB	12.64	5.32	2.38	0.27	33.6%	14.1%	19.4%	.162	1.15	.261	79.3%	56	75	3.06
2025	MIA	ST	13.50	3.38	4.00	3.38	30.8%	7.7%	23.1%	.273	1.50	.333	83.3%	139	163	7.86
2026	MIA	ST	13.50	4.50	3.00	0.00	37.5%	12.5%	25.0%	.077	0.75	.143	100.0%	0	60	2.90
2026	FGDC	PROJ	8.49	4.85	1.75	1.19	21.0%	12.0%	9.0%	.245	1.48	.293	69.9%			4.88
2026	Steamer	PROJ	8.42	4.62	1.82	1.11	21.1%	11.6%	9.5%	.247	1.47	.297	72.1%			4.58
2026	ZiPS	PROJ	8.57	5.08	1.69	1.27	20.9%	12.4%	8.5%	.243	1.50	.288	67.8%			5.18
2026	ZiPS DC	PROJ	8.57	5.08	1.69	1.27	20.9%	12.4%	8.5%	.243	1.50	.288	67.8%			5.18
2026	ATC	PROJ	8.65	4.81	1.80	1.12	21.6%	12.0%	9.6%	.242	1.47	.293	69.5%			4.65
2026	OOPSY	PROJ	9.84	4.80	2.05	1.07	24.3%	11.9%	12.4%	.229	1.43	.288	74.5%			4.26
2026	MIA	AAA	16.12	5.24	3.08	1.21	42.1%	13.7%	28.4%	.165	1.16	.278	68.5%	96	81	3.83
2026	MIA	MLB	9.00	0.00	1.00	0.00	33.3%	0.0%	33.3%	.000	0.00	.000	100.0%	0	27	1.11
2026			8.48	3.62	2.34	1.07	22.1%	9.4%	12.6%	.238	1.31	.286	72.0%			4.21
2026	FGDC	ROS	8.98	5.00	1.79	1.15	22.4%	12.5%	9.9%	.243	1.48	.298	70.3%			4.77
2026	Steamer	ROS	9.32	4.96	1.88	1.03	23.4%	12.5%	11.0%	.235	1.45	.294	72.9%			4.40
2026	ZiPS	ROS	8.64	5.05	1.71	1.26	21.4%	12.5%	8.9%	.251	1.51	.301	67.8%			5.14
2026	ZiPS DC	ROS	8.64	5.05	1.71	1.26	21.4%	12.5%	8.9%	.251	1.51	.301	67.8%			5.14
2026	ATC DC	ROS	9.51	4.89	1.95	1.03	24.0%	12.3%	11.7%	.235	1.44	.296	70.6%			4.33
2026	OOPSY	ROS	11.19	4.53	2.47	0.95	29.0%	11.7%	17.3%	.202	1.26	.271	77.8%			3.69
Total	- - -	MLB	9.00	0.00	1.00	0.00	33.3%	0.0%	33.3%	.000	0.00	.000	100.0%	0	27	1.11

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingMLB Regular SeasonCollege

Season	Team	Level	Events Events - The number of Batted Balls (TBF - SO - BB - HBP)	EV EV - Exit Velocity (mph) - Speed of the baseball as it comes off the bat	maxEV maxEV - Maximum Exit Velocity (mph) - Highest speed of a ball off the bat.	LA LA - Launch Angle (degree) - Vertical direction of the ball as it leaves the bat	Barrel% Barrel% - Percentage of batted balls that are classified as barrels	HardHit HardHit - Number of batted balls with exit velocity of 95 mph or higher	HardHit% HardHit% - Percentage of batted balls with exit velocity of 95 mph or higher	ERA ERA - Earned Run Average ((ER*9)/IP)	xERA xERA - Expected ERA
2025	MIA	AAA	33	84.2	101.9	20.0		7	21.2%	2.65
2026	MIA	ST	7	86.1	97.3	16.4	0.0%	2	28.6%	0.00
2026	MIA	AAA	39	90.4	111.7	24.3		14	35.9%	4.43
2026	MIA	MLB	2	91.5	93.6	29.5	0.0%	0	0.0%	0.00	0.61
Total	- - -	MLB	2	91.5	93.6	29.5	0.0%	0	0.0%	0.00	0.61

Season	Team	Level	Events Events - The number of Batted Balls (TBF - SO - BB - HBP)	EV EV - Exit Velocity (mph) - Speed of the baseball as it comes off the bat	maxEV maxEV - Maximum Exit Velocity (mph) - Highest speed of a ball off the bat.	LA LA - Launch Angle (degree) - Vertical direction of the ball as it leaves the bat	Barrel% Barrel% - Percentage of batted balls that are classified as barrels	HardHit HardHit - Number of batted balls with exit velocity of 95 mph or higher	HardHit% HardHit% - Percentage of batted balls with exit velocity of 95 mph or higher	ERA ERA - Earned Run Average ((ER*9)/IP)	xERA xERA - Expected ERA
2025	MIA	AAA	33	84.2	101.9	20.0		7	21.2%	2.65
2026	MIA	ST	7	86.1	97.3	16.4	0.0%	2	28.6%	0.00
2026	MIA	AAA	39	90.4	111.7	24.3		14	35.9%	4.43
2026	MIA	MLB	2	91.5	93.6	29.5	0.0%	0	0.0%	0.00	0.61
Total	- - -	MLB	2	91.5	93.6	29.5	0.0%	0	0.0%	0.00	0.61

William Kempner

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BAL	CHW	ATH
BOS	CLE	HOU
NYY	DET	LAA
TBR	KCR	SEA
TOR	MIN	TEX

ATL	CHC	ARI
MIA	CIN	COL
NYM	MIL	LAD
PHI	PIT	SDP
WSN	STL	SFG