Isaac Mattson

Pittsburgh Pirates

Age: 29

Bats/Throws: R/R

6'2" / 215

DOB: 7/14/1995

(29 years, 11 months, 13 days)

Stats

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingMLB Regular Season

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
2017	LAA	R	21	0	0	1	3	0	4.2	13.50	1.93	0.00	.300	75.0%	40.0%	0.0%		1.93		1.85	2.17
2017	LAA	R	21	1	0	6	17	0	26.2	13.50	3.38	1.35	.250	100.0%	53.1%	21.1%		1.35		4.62	3.73
2017	LAA	MiLB	21	1	0	7	20	0	31.1	13.50	3.16	1.15	.259	100.0%	50.8%	19.0%		1.44		4.21	3.50
2018	LAA	A	22	5	3	0	14	11	57.0	7.26	3.00	0.16	.333	70.4%	43.9%	1.5%		3.95		3.25	4.06
2018	LAA	A+	22	2	1	2	11	0	37.1	9.40	2.89	0.48	.280	65.5%	49.0%	5.7%		3.62		3.49	3.95
2018	LAA	MiLB	22	7	4	2	25	11	94.1	8.11	2.96	0.29	.314	68.7%	45.8%	2.9%		3.82		3.35	4.01
2019	LAA	A+	23	3	0	0	8	0	20.1	13.28	3.98	0.44	.194	89.7%	44.4%	6.3%		0.89		2.68	2.93
2019	LAA	AA	23	3	3	0	24	0	43.2	12.57	2.68	0.62	.287	71.8%	48.9%	9.7%		2.68		2.50	2.31
2019	LAA	AAA	23	0	0	1	5	0	9.1	18.32	4.82	0.00	.500	71.4%	38.9%	0.0%		3.86		1.33	2.45
2019	LAA	MiLB	23	6	3	1	37	0	73.1	13.50	3.31	0.49	.291	75.6%	46.6%	7.7%		2.33		2.40	2.50
2019	LAA	ST	23	0	0	0	1	0	1.0	9.00	0.00	0.00	.000	100.0%	0.0%	0.0%		0.00		1.73	5.31
2020	BAL	ST	24	0	0	0	2	0	1.0	9.00	0.00	0.00	.333	100.0%	33.3%	0.0%		0.00		1.59	5.28
2021	BAL	AAA	25	0	2	2	18	0	17.1	12.46	3.12	1.56	.447	67.2%	30.6%	16.7%		6.23		4.05	3.64
2021	BAL	ST	25	0	1	1	5	0	4.2	5.79	5.79	1.93	.286	75.8%	46.7%	16.7%		5.79		7.01	6.76
2021	BAL	MLB	25	0	0	0	4	0	4.1	6.23	10.38	0.00	.333	70.0%	33.3%	0.0%	92.7	6.23	7.26	5.25	8.91	0.0
2022	BAL	AAA	26	1	0	0	19	0	17.2	7.13	10.19	2.04	.182	75.7%	33.3%	16.7%		6.62		8.94	8.24
2023	MIN	AA	27	3	1	0	21	1	32.1	11.69	6.68	0.84	.182	72.2%	34.3%	9.7%		3.62		4.90	5.18
2024	PIT	AA	28	2	1	1	8	0	11.0	10.64	4.09	0.82	.320	79.4%	50.0%	14.3%		3.27		3.56	3.17
2024	PIT	AAA	28	5	1	3	29	3	60.0	11.40	4.95	0.90	.279	76.1%	32.2%	9.4%		3.15		3.99	4.60
2024	PIT	MiLB	28	7	2	4	37	3	71.0	11.28	4.82	0.89	.285	76.6%	34.7%	9.9%		3.17		3.92	4.38
2024	PIT	ST	28	0	0	0	4	0	3.1	10.80	2.70	0.00	.143	100.0%	57.1%	0.0%		0.00		2.24	3.78
2024	PIT	MLB	28	0	0	0	3	0	5.1	10.13	8.44	0.00	.091	57.1%	54.5%	0.0%	94.0	5.06	5.60	4.29	5.14	0.0
2025	PIT	ST	29	1	0	0	3	0	4.0	9.00	4.50	2.25	.125	76.9%	33.3%	20.0%		4.50		6.48	5.45
2025	Steamer	PROJ	29	0	0	0	1	0	1.0	8.30	4.72	1.18	.292	71.9%	37.3%			4.61		4.75	4.90	0.0
2025	ZiPS	PROJ	29	3	5	0	33	3	57.3	8.80	5.18	1.10	.293	70.9%				4.71		4.74		-0.1
2025	OOPSY	PROJ	29	0	0	0	1	0	1.8	8.76	5.08	1.05	.281	71.2%				4.30		4.59		0.0
2025	PIT	AAA	29	2	0	4	19	0	21.0	10.71	2.57	0.43	.250	64.5%	42.9%	6.3%		2.57		2.64	3.27
2025	PIT	MLB	29	1	0	0	10	0	13.1	8.78	2.03	1.35	.103	96.2%	29.0%	11.1%	94.1	2.03	1.83	3.75	3.78	0.1
2025	FGDC	ROS	29	1	2	0	28	0	28.0	8.72	4.58	1.15	.294	71.2%				4.54		4.47		0.0
2025	Steamer	ROS	29	1	1	0	28	0	28.0	8.43	4.31	1.13	.291	72.4%				4.35		4.39		0.0
2025	ZiPS	ROS	29	1	2		15	1	24.0	9.02	4.85	1.17	.298	69.9%				4.73		4.55		0.0
2025	ZiPS DC	ROS	29	1	2	0	28	0	28.0	9.02	4.85	1.17	.298	69.9%				4.73		4.55		0.0
2025	ATC DC	ROS	29	1	0	0	28	0	28.0	9.29	5.82	0.54	.289	63.8%				4.86		4.01		0.1
2025	THE BAT	ROS	29	1	1	0	28	0	19.0	9.57	4.58	1.05	.287	70.6%				4.36		4.17		0.1
2025	OOPSY	ROS	29	1	1	0	28	0	28.0	8.38	4.15	1.11	.280	69.5%				4.26		4.34		0.0
Total	- - -	MLB		1	0	0	17	0	23.0	8.61	5.09	0.78	.164	72.1%	35.1%	6.7%	93.7	3.52		4.16	5.06	0.1

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
2017	LAA	R	21	0	0	1	3	0	4.2	13.50	1.93	0.00	.300	75.0%	40.0%	0.0%		1.93		1.85	2.17
2017	LAA	R	21	1	0	6	17	0	26.2	13.50	3.38	1.35	.250	100.0%	53.1%	21.1%		1.35		4.62	3.73
2017	LAA	MiLB	21	1	0	7	20	0	31.1	13.50	3.16	1.15	.259	100.0%	50.8%	19.0%		1.44		4.21	3.50
2018	LAA	A	22	5	3	0	14	11	57.0	7.26	3.00	0.16	.333	70.4%	43.9%	1.5%		3.95		3.25	4.06
2018	LAA	A+	22	2	1	2	11	0	37.1	9.40	2.89	0.48	.280	65.5%	49.0%	5.7%		3.62		3.49	3.95
2018	LAA	MiLB	22	7	4	2	25	11	94.1	8.11	2.96	0.29	.314	68.7%	45.8%	2.9%		3.82		3.35	4.01
2019	LAA	A+	23	3	0	0	8	0	20.1	13.28	3.98	0.44	.194	89.7%	44.4%	6.3%		0.89		2.68	2.93
2019	LAA	AA	23	3	3	0	24	0	43.2	12.57	2.68	0.62	.287	71.8%	48.9%	9.7%		2.68		2.50	2.31
2019	LAA	AAA	23	0	0	1	5	0	9.1	18.32	4.82	0.00	.500	71.4%	38.9%	0.0%		3.86		1.33	2.45
2019	LAA	MiLB	23	6	3	1	37	0	73.1	13.50	3.31	0.49	.291	75.6%	46.6%	7.7%		2.33		2.40	2.50
2019	LAA	ST	23	0	0	0	1	0	1.0	9.00	0.00	0.00	.000	100.0%	0.0%	0.0%		0.00		1.73	5.31
2020	BAL	ST	24	0	0	0	2	0	1.0	9.00	0.00	0.00	.333	100.0%	33.3%	0.0%		0.00		1.59	5.28
2021	BAL	AAA	25	0	2	2	18	0	17.1	12.46	3.12	1.56	.447	67.2%	30.6%	16.7%		6.23		4.05	3.64
2021	BAL	ST	25	0	1	1	5	0	4.2	5.79	5.79	1.93	.286	75.8%	46.7%	16.7%		5.79		7.01	6.76
2021	BAL	MLB	25	0	0	0	4	0	4.1	6.23	10.38	0.00	.333	70.0%	33.3%	0.0%	92.7	6.23	7.26	5.25	8.91	0.0
2022	BAL	AAA	26	1	0	0	19	0	17.2	7.13	10.19	2.04	.182	75.7%	33.3%	16.7%		6.62		8.94	8.24
2023	MIN	AA	27	3	1	0	21	1	32.1	11.69	6.68	0.84	.182	72.2%	34.3%	9.7%		3.62		4.90	5.18
2024	PIT	AA	28	2	1	1	8	0	11.0	10.64	4.09	0.82	.320	79.4%	50.0%	14.3%		3.27		3.56	3.17
2024	PIT	AAA	28	5	1	3	29	3	60.0	11.40	4.95	0.90	.279	76.1%	32.2%	9.4%		3.15		3.99	4.60
2024	PIT	MiLB	28	7	2	4	37	3	71.0	11.28	4.82	0.89	.285	76.6%	34.7%	9.9%		3.17		3.92	4.38
2024	PIT	ST	28	0	0	0	4	0	3.1	10.80	2.70	0.00	.143	100.0%	57.1%	0.0%		0.00		2.24	3.78
2024	PIT	MLB	28	0	0	0	3	0	5.1	10.13	8.44	0.00	.091	57.1%	54.5%	0.0%	94.0	5.06	5.60	4.29	5.14	0.0
2025	PIT	ST	29	1	0	0	3	0	4.0	9.00	4.50	2.25	.125	76.9%	33.3%	20.0%		4.50		6.48	5.45
2025	Steamer	PROJ	29	0	0	0	1	0	1.0	8.30	4.72	1.18	.292	71.9%	37.3%			4.61		4.75	4.90	0.0
2025	ZiPS	PROJ	29	3	5	0	33	3	57.3	8.80	5.18	1.10	.293	70.9%				4.71		4.74		-0.1
2025	OOPSY	PROJ	29	0	0	0	1	0	1.8	8.76	5.08	1.05	.281	71.2%				4.30		4.59		0.0
2025	PIT	AAA	29	2	0	4	19	0	21.0	10.71	2.57	0.43	.250	64.5%	42.9%	6.3%		2.57		2.64	3.27
2025	PIT	MLB	29	1	0	0	10	0	13.1	8.78	2.03	1.35	.103	96.2%	29.0%	11.1%	94.1	2.03	1.83	3.75	3.78	0.1
2025	FGDC	ROS	29	1	2	0	28	0	28.0	8.72	4.58	1.15	.294	71.2%				4.54		4.47		0.0
2025	Steamer	ROS	29	1	1	0	28	0	28.0	8.43	4.31	1.13	.291	72.4%				4.35		4.39		0.0
2025	ZiPS	ROS	29	1	2		15	1	24.0	9.02	4.85	1.17	.298	69.9%				4.73		4.55		0.0
2025	ZiPS DC	ROS	29	1	2	0	28	0	28.0	9.02	4.85	1.17	.298	69.9%				4.73		4.55		0.0
2025	ATC DC	ROS	29	1	0	0	28	0	28.0	9.29	5.82	0.54	.289	63.8%				4.86		4.01		0.1
2025	THE BAT	ROS	29	1	1	0	28	0	19.0	9.57	4.58	1.05	.287	70.6%				4.36		4.17		0.1
2025	OOPSY	ROS	29	1	1	0	28	0	28.0	8.38	4.15	1.11	.280	69.5%				4.26		4.34		0.0
Total	- - -	MLB		1	0	0	17	0	23.0	8.61	5.09	0.78	.164	72.1%	35.1%	6.7%	93.7	3.52		4.16	5.06	0.1

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingMLB Regular Season

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	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
2017	LAA	R	0	0	1.93	3	0		0	0	1	0	0	4.2	18	3	1	1	0	1	0	0	2	0	7
2017	LAA	R	1	0	1.35	17	0		0	0	6	1	0	26.2	103	16	4	4	4	10	1	1	0	0	40
2017	LAA	MiLB	1	0	1.44	20	0		0	0	7	1	0	31.1	121	19	5	5	4	11	1	1	2	0	47
2018	LAA	A	5	3	3.95	14	11		0	0	0	0	0	57.0	243	59	25	25	1	19	0	3	1	0	46
2018	LAA	A+	2	1	3.62	11	0		0	0	2	2	0	37.1	155	30	17	15	2	12	0	2	1	0	39
2018	LAA	MiLB	7	4	3.82	25	11		0	0	2	2	0	94.1	398	89	42	40	3	31	0	5	2	0	85
2019	LAA	A+	3	0	0.89	8	0		0	0	0	0	0	20.1	76	8	3	2	1	9	0	0	1	0	30
2019	LAA	AA	3	3	2.68	24	0		0	0	0	0	0	43.2	174	30	16	13	3	13	0	3	1	0	61
2019	LAA	AAA	0	0	3.86	5	0		0	0	1	0	0	9.1	42	9	4	4	0	5	0	0	0	0	19
2019	LAA	MiLB	6	3	2.33	37	0		0	0	1	0	0	73.1	292	47	23	19	4	27	0	3	2	0	110
2019	LAA	ST	0	0	0.00	1	0		0	0	0	0	0	1.0	3	0	0	0	0	0	0	0	0	0	1
2020	BAL	ST	0	0	0.00	2	0		0	0	0	0	0	1.0	4	1	0	0	0	0	0	0	0	0	1
2021	BAL	AAA	0	2	6.23	18	0		0	0	2	1	1	17.1	81	24	13	12	3	6	0	1	2	0	24
2021	BAL	ST	0	1	5.79	5	0		0	0	1	0	0	4.2	21	5	3	3	1	3	0	0	0	0	3
2021	BAL	MLB	0	0	6.23	4	0	0	0	0	0	0	0	4.1	23	5	3	3	0	5	0	0	1	0	3
2022	BAL	AAA	1	0	6.62	19	0		0	0	0	2	1	17.2	86	12	13	13	4	20	0	4	2	0	14
2023	MIN	AA	3	1	3.62	21	1		0	0	0	1	3	32.1	139	15	15	13	3	24	0	4	3	0	42
2024	PIT	AA	2	1	3.27	8	0		0	0	1	0	1	11.0	44	9	4	4	1	5	0	0	1	0	13
2024	PIT	AAA	5	1	3.15	29	3		0	0	3	1	0	60.0	255	45	25	21	6	33	0	0	0	0	76
2024	PIT	MiLB	7	2	3.17	37	3		0	0	4	1	1	71.0	299	54	29	25	7	38	0	0	1	0	89
2024	PIT	ST	0	0	0.00	4	0		0	0	0	0	0	3.1	12	1	0	0	0	1	0	0	0	0	4
2024	PIT	MLB	0	0	5.06	3	0	0	0	0	0	0	0	5.1	23	1	3	3	0	5	0	1	0	0	6
2025	PIT	ST	1	0	4.50	3	0		0	0	0	1	0	4.0	15	2	2	2	1	2	0	0	0	0	4
2025	Steamer	PROJ	0	0	4.61	1	0	0	0	0	0	0		1.0	4	1	1	1	0	1	0	0			1
2025	ZiPS	PROJ	3	5	4.71	33	3				0	0		57.3	257	53	32	30	7	33	0	4	3	0	56
2025	OOPSY	PROJ	0	0	4.30	1	0	0			0	0		1.8	8	1	1	1	0	1	0	0			2
2025	PIT	AAA	2	0	2.57	19	0		0	0	4	1	1	21.0	84	14	8	6	1	6	0	0	1	0	25
2025	PIT	MLB	1	0	2.03	10	0	0	0	0	0	1	1	13.1	47	5	3	3	2	3	0	0	0	0	13
2025	FGDC	ROS	1	2	4.54	28	0	0			0	6		28.0	122	26	15	14	4	14		1			27
2025	Steamer	ROS	1	1	4.35	28	0	0	0	0	0	6		28.0	121	26	14	13	3	13		1			26
2025	ZiPS	ROS	1	2	4.73	15	1							24.0	105	22	13	12	3	13		1			24
2025	ZiPS DC	ROS	1	2	4.73	28	0	0			0	6		28.0	123	26	16	15	4	15		2			28
2025	ATC DC	ROS	1	0	4.86	28	0	0			0	6		28.0	124	23	16	15	2	18		3			29
2025	THE BAT	ROS	1	1	4.36	28	0				0	6		19.0	81	16	10	9	2	9	0	1			20
2025	OOPSY	ROS	1	1	4.26	28	0	0			0	6		28.0	114	23	14	13	3	13		1			26
Total	- - -	MLB	1	0	3.52	17	0	0	0	0	0	1	1	23.0	93	11	9	9	2	13	0	1	1	0	22

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	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
2017	LAA	R	0	0	1.93	3	0		0	0	1	0	0	4.2	18	3	1	1	0	1	0	0	2	0	7
2017	LAA	R	1	0	1.35	17	0		0	0	6	1	0	26.2	103	16	4	4	4	10	1	1	0	0	40
2017	LAA	MiLB	1	0	1.44	20	0		0	0	7	1	0	31.1	121	19	5	5	4	11	1	1	2	0	47
2018	LAA	A	5	3	3.95	14	11		0	0	0	0	0	57.0	243	59	25	25	1	19	0	3	1	0	46
2018	LAA	A+	2	1	3.62	11	0		0	0	2	2	0	37.1	155	30	17	15	2	12	0	2	1	0	39
2018	LAA	MiLB	7	4	3.82	25	11		0	0	2	2	0	94.1	398	89	42	40	3	31	0	5	2	0	85
2019	LAA	A+	3	0	0.89	8	0		0	0	0	0	0	20.1	76	8	3	2	1	9	0	0	1	0	30
2019	LAA	AA	3	3	2.68	24	0		0	0	0	0	0	43.2	174	30	16	13	3	13	0	3	1	0	61
2019	LAA	AAA	0	0	3.86	5	0		0	0	1	0	0	9.1	42	9	4	4	0	5	0	0	0	0	19
2019	LAA	MiLB	6	3	2.33	37	0		0	0	1	0	0	73.1	292	47	23	19	4	27	0	3	2	0	110
2019	LAA	ST	0	0	0.00	1	0		0	0	0	0	0	1.0	3	0	0	0	0	0	0	0	0	0	1
2020	BAL	ST	0	0	0.00	2	0		0	0	0	0	0	1.0	4	1	0	0	0	0	0	0	0	0	1
2021	BAL	AAA	0	2	6.23	18	0		0	0	2	1	1	17.1	81	24	13	12	3	6	0	1	2	0	24
2021	BAL	ST	0	1	5.79	5	0		0	0	1	0	0	4.2	21	5	3	3	1	3	0	0	0	0	3
2021	BAL	MLB	0	0	6.23	4	0	0	0	0	0	0	0	4.1	23	5	3	3	0	5	0	0	1	0	3
2022	BAL	AAA	1	0	6.62	19	0		0	0	0	2	1	17.2	86	12	13	13	4	20	0	4	2	0	14
2023	MIN	AA	3	1	3.62	21	1		0	0	0	1	3	32.1	139	15	15	13	3	24	0	4	3	0	42
2024	PIT	AA	2	1	3.27	8	0		0	0	1	0	1	11.0	44	9	4	4	1	5	0	0	1	0	13
2024	PIT	AAA	5	1	3.15	29	3		0	0	3	1	0	60.0	255	45	25	21	6	33	0	0	0	0	76
2024	PIT	MiLB	7	2	3.17	37	3		0	0	4	1	1	71.0	299	54	29	25	7	38	0	0	1	0	89
2024	PIT	ST	0	0	0.00	4	0		0	0	0	0	0	3.1	12	1	0	0	0	1	0	0	0	0	4
2024	PIT	MLB	0	0	5.06	3	0	0	0	0	0	0	0	5.1	23	1	3	3	0	5	0	1	0	0	6
2025	PIT	ST	1	0	4.50	3	0		0	0	0	1	0	4.0	15	2	2	2	1	2	0	0	0	0	4
2025	Steamer	PROJ	0	0	4.61	1	0	0	0	0	0	0		1.0	4	1	1	1	0	1	0	0			1
2025	ZiPS	PROJ	3	5	4.71	33	3				0	0		57.3	257	53	32	30	7	33	0	4	3	0	56
2025	OOPSY	PROJ	0	0	4.30	1	0	0			0	0		1.8	8	1	1	1	0	1	0	0			2
2025	PIT	AAA	2	0	2.57	19	0		0	0	4	1	1	21.0	84	14	8	6	1	6	0	0	1	0	25
2025	PIT	MLB	1	0	2.03	10	0	0	0	0	0	1	1	13.1	47	5	3	3	2	3	0	0	0	0	13
2025	FGDC	ROS	1	2	4.54	28	0	0			0	6		28.0	122	26	15	14	4	14		1			27
2025	Steamer	ROS	1	1	4.35	28	0	0	0	0	0	6		28.0	121	26	14	13	3	13		1			26
2025	ZiPS	ROS	1	2	4.73	15	1							24.0	105	22	13	12	3	13		1			24
2025	ZiPS DC	ROS	1	2	4.73	28	0	0			0	6		28.0	123	26	16	15	4	15		2			28
2025	ATC DC	ROS	1	0	4.86	28	0	0			0	6		28.0	124	23	16	15	2	18		3			29
2025	THE BAT	ROS	1	1	4.36	28	0				0	6		19.0	81	16	10	9	2	9	0	1			20
2025	OOPSY	ROS	1	1	4.26	28	0	0			0	6		28.0	114	23	14	13	3	13		1			26
Total	- - -	MLB	1	0	3.52	17	0	0	0	0	0	1	1	23.0	93	11	9	9	2	13	0	1	1	0	22

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingMLB Regular SeasonAverages

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
2017	LAA	R	13.50	1.93	7.00	0.00	38.9%	5.6%	33.3%	.176	0.86	.300	75.0%	43	42	1.85
2017	LAA	R	13.50	3.38	4.00	1.35	38.8%	9.7%	29.1%	.174	0.98	.250	100.0%	23	80	4.62
2017	LAA	MiLB	13.50	3.16	4.27	1.15	38.8%	9.1%	29.8%	.174	0.96	.259	100.0%	26	74	4.21
2018	LAA	A	7.26	3.00	2.42	0.16	18.9%	7.8%	11.1%	.267	1.37	.333	70.4%	102	83	3.25
2018	LAA	A+	9.40	2.89	3.25	0.48	25.2%	7.7%	17.4%	.213	1.13	.280	65.5%	90	85	3.49
2018	LAA	MiLB	8.11	2.96	2.74	0.29	21.4%	7.8%	13.6%	.246	1.27	.314	68.7%	97	84	3.35
2019	LAA	A+	13.28	3.98	3.33	0.44	39.5%	11.8%	27.6%	.119	0.84	.194	89.7%	23	69	2.68
2019	LAA	AA	12.57	2.68	4.69	0.62	35.1%	7.5%	27.6%	.190	0.98	.287	71.8%	71	67	2.50
2019	LAA	AAA	18.32	4.82	3.80	0.00	45.2%	11.9%	33.3%	.243	1.50	.500	71.4%	68	24	1.33
2019	LAA	MiLB	13.50	3.31	4.07	0.49	37.7%	9.2%	28.4%	.179	1.01	.291	75.6%	57	62	2.40
2019	LAA	ST	9.00	0.00	1.00	0.00	33.3%	0.0%	33.3%	.000	0.00	.000	100.0%	0	36	1.73
2020	BAL	ST	9.00	0.00	1.00	0.00	25.0%	0.0%	25.0%	.250	1.00	.333	100.0%	0	33	1.59
2021	BAL	AAA	12.46	3.12	4.00	1.56	29.6%	7.4%	22.2%	.324	1.73	.447	67.2%	140	91	4.05
2021	BAL	ST	5.79	5.79	1.00	1.93	14.3%	14.3%	0.0%	.278	1.71	.286	75.8%	122	146	7.01
2021	BAL	MLB	6.23	10.38	0.60	0.00	13.0%	21.7%	-8.7%	.278	2.31	.333	70.0%	141	115	5.25
2021			8.90	3.34	2.67	1.26	23.2%	8.7%	14.5%	.241	1.30	.290	72.1%			4.30
2022	BAL	AAA	7.13	10.19	0.70	2.04	16.3%	23.3%	-7.0%	.194	1.81	.182	75.7%	148	198	8.94
2023	MIN	AA	11.69	6.68	1.75	0.84	30.2%	17.3%	12.9%	.135	1.21	.182	72.2%	73	100	4.90
2024	PIT	AA	10.64	4.09	2.60	0.82	29.5%	11.4%	18.2%	.231	1.27	.320	79.4%	82	91	3.56
2024	PIT	AAA	11.40	4.95	2.30	0.90	29.8%	12.9%	16.9%	.203	1.30	.279	76.1%	66	84	3.99
2024	PIT	MiLB	11.28	4.82	2.34	0.89	29.8%	12.7%	17.1%	.207	1.30	.285	76.6%	68	85	3.92
2024	PIT	ST	10.80	2.70	4.00	0.00	33.3%	8.3%	25.0%	.091	0.60	.143	100.0%	0	48	2.24
2024	PIT	MLB	10.13	8.44	1.20	0.00	26.1%	21.7%	4.3%	.059	1.13	.091	57.1%	120	105	4.29
2024			8.60	3.12	2.76	1.14	22.6%	8.2%	14.4%	.241	1.27	.289	72.1%			4.11
2025	PIT	ST	9.00	4.50	2.00	2.25	26.7%	13.3%	13.3%	.154	1.00	.125	76.9%	92	132	6.48
2025	Steamer	PROJ	8.30	4.72	1.76	1.18	20.8%	11.8%	9.0%	.246	1.48	.292	71.9%			4.75
2025	ZiPS	PROJ	8.80	5.18	1.70	1.10	21.8%	12.8%	8.9%	.241	1.50	.293	70.9%			4.74
2025	OOPSY	PROJ	8.76	5.08	1.72	1.05	22.6%	13.1%	9.5%	.229	1.41	.281	71.2%			4.59
2025	PIT	AAA	10.71	2.57	4.17	0.43	29.8%	7.1%	22.6%	.179	0.95	.250	64.5%	56	58	2.64
2025	PIT	MLB	8.78	2.03	4.33	1.35	27.7%	6.4%	21.3%	.114	0.60	.103	96.2%	48	93	3.75
2025			8.39	3.26	2.58	1.12	22.0%	8.5%	13.4%	.242	1.29	.289	72.8%			4.17
2025	FGDC	ROS	8.72	4.58	1.91	1.15	21.9%	11.5%	10.4%	.244	1.45	.294	71.2%			4.47
2025	Steamer	ROS	8.43	4.31	1.96	1.13	21.4%	10.9%	10.4%	.243	1.42	.291	72.4%			4.39
2025	ZiPS	ROS	9.02	4.85	1.86	1.17	22.5%	12.1%	10.4%	.244	1.48	.298	69.9%			4.55
2025	ZiPS DC	ROS	9.02	4.85	1.86	1.17	22.5%	12.1%	10.4%	.244	1.48	.298	69.9%			4.55
2025	ATC DC	ROS	9.29	5.82	1.60	0.54	23.1%	14.5%	8.6%	.221	1.47	.289	63.8%			4.01
2025	THE BAT	ROS	9.57	4.58	2.09	1.05	24.4%	11.7%	12.7%	.228	1.37	.287	70.6%			4.17
2025	OOPSY	ROS	8.38	4.15	2.02	1.11	22.6%	11.2%	11.4%	.232	1.30	.280	69.5%			4.34
Total	- - -	MLB	8.61	5.09	1.69	0.78	23.7%	14.0%	9.7%	.139	1.04	.164	72.1%	82	100	4.16

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
2017	LAA	R	13.50	1.93	7.00	0.00	38.9%	5.6%	33.3%	.176	0.86	.300	75.0%	43	42	1.85
2017	LAA	R	13.50	3.38	4.00	1.35	38.8%	9.7%	29.1%	.174	0.98	.250	100.0%	23	80	4.62
2017	LAA	MiLB	13.50	3.16	4.27	1.15	38.8%	9.1%	29.8%	.174	0.96	.259	100.0%	26	74	4.21
2018	LAA	A	7.26	3.00	2.42	0.16	18.9%	7.8%	11.1%	.267	1.37	.333	70.4%	102	83	3.25
2018	LAA	A+	9.40	2.89	3.25	0.48	25.2%	7.7%	17.4%	.213	1.13	.280	65.5%	90	85	3.49
2018	LAA	MiLB	8.11	2.96	2.74	0.29	21.4%	7.8%	13.6%	.246	1.27	.314	68.7%	97	84	3.35
2019	LAA	A+	13.28	3.98	3.33	0.44	39.5%	11.8%	27.6%	.119	0.84	.194	89.7%	23	69	2.68
2019	LAA	AA	12.57	2.68	4.69	0.62	35.1%	7.5%	27.6%	.190	0.98	.287	71.8%	71	67	2.50
2019	LAA	AAA	18.32	4.82	3.80	0.00	45.2%	11.9%	33.3%	.243	1.50	.500	71.4%	68	24	1.33
2019	LAA	MiLB	13.50	3.31	4.07	0.49	37.7%	9.2%	28.4%	.179	1.01	.291	75.6%	57	62	2.40
2019	LAA	ST	9.00	0.00	1.00	0.00	33.3%	0.0%	33.3%	.000	0.00	.000	100.0%	0	36	1.73
2020	BAL	ST	9.00	0.00	1.00	0.00	25.0%	0.0%	25.0%	.250	1.00	.333	100.0%	0	33	1.59
2021	BAL	AAA	12.46	3.12	4.00	1.56	29.6%	7.4%	22.2%	.324	1.73	.447	67.2%	140	91	4.05
2021	BAL	ST	5.79	5.79	1.00	1.93	14.3%	14.3%	0.0%	.278	1.71	.286	75.8%	122	146	7.01
2021	BAL	MLB	6.23	10.38	0.60	0.00	13.0%	21.7%	-8.7%	.278	2.31	.333	70.0%	141	115	5.25
2021			8.90	3.34	2.67	1.26	23.2%	8.7%	14.5%	.241	1.30	.290	72.1%			4.30
2022	BAL	AAA	7.13	10.19	0.70	2.04	16.3%	23.3%	-7.0%	.194	1.81	.182	75.7%	148	198	8.94
2023	MIN	AA	11.69	6.68	1.75	0.84	30.2%	17.3%	12.9%	.135	1.21	.182	72.2%	73	100	4.90
2024	PIT	AA	10.64	4.09	2.60	0.82	29.5%	11.4%	18.2%	.231	1.27	.320	79.4%	82	91	3.56
2024	PIT	AAA	11.40	4.95	2.30	0.90	29.8%	12.9%	16.9%	.203	1.30	.279	76.1%	66	84	3.99
2024	PIT	MiLB	11.28	4.82	2.34	0.89	29.8%	12.7%	17.1%	.207	1.30	.285	76.6%	68	85	3.92
2024	PIT	ST	10.80	2.70	4.00	0.00	33.3%	8.3%	25.0%	.091	0.60	.143	100.0%	0	48	2.24
2024	PIT	MLB	10.13	8.44	1.20	0.00	26.1%	21.7%	4.3%	.059	1.13	.091	57.1%	120	105	4.29
2024			8.60	3.12	2.76	1.14	22.6%	8.2%	14.4%	.241	1.27	.289	72.1%			4.11
2025	PIT	ST	9.00	4.50	2.00	2.25	26.7%	13.3%	13.3%	.154	1.00	.125	76.9%	92	132	6.48
2025	Steamer	PROJ	8.30	4.72	1.76	1.18	20.8%	11.8%	9.0%	.246	1.48	.292	71.9%			4.75
2025	ZiPS	PROJ	8.80	5.18	1.70	1.10	21.8%	12.8%	8.9%	.241	1.50	.293	70.9%			4.74
2025	OOPSY	PROJ	8.76	5.08	1.72	1.05	22.6%	13.1%	9.5%	.229	1.41	.281	71.2%			4.59
2025	PIT	AAA	10.71	2.57	4.17	0.43	29.8%	7.1%	22.6%	.179	0.95	.250	64.5%	56	58	2.64
2025	PIT	MLB	8.78	2.03	4.33	1.35	27.7%	6.4%	21.3%	.114	0.60	.103	96.2%	48	93	3.75
2025			8.39	3.26	2.58	1.12	22.0%	8.5%	13.4%	.242	1.29	.289	72.8%			4.17
2025	FGDC	ROS	8.72	4.58	1.91	1.15	21.9%	11.5%	10.4%	.244	1.45	.294	71.2%			4.47
2025	Steamer	ROS	8.43	4.31	1.96	1.13	21.4%	10.9%	10.4%	.243	1.42	.291	72.4%			4.39
2025	ZiPS	ROS	9.02	4.85	1.86	1.17	22.5%	12.1%	10.4%	.244	1.48	.298	69.9%			4.55
2025	ZiPS DC	ROS	9.02	4.85	1.86	1.17	22.5%	12.1%	10.4%	.244	1.48	.298	69.9%			4.55
2025	ATC DC	ROS	9.29	5.82	1.60	0.54	23.1%	14.5%	8.6%	.221	1.47	.289	63.8%			4.01
2025	THE BAT	ROS	9.57	4.58	2.09	1.05	24.4%	11.7%	12.7%	.228	1.37	.287	70.6%			4.17
2025	OOPSY	ROS	8.38	4.15	2.02	1.11	22.6%	11.2%	11.4%	.232	1.30	.280	69.5%			4.34
Total	- - -	MLB	8.61	5.09	1.69	0.78	23.7%	14.0%	9.7%	.139	1.04	.164	72.1%	82	100	4.16

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingMLB Regular Season

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	Barrels Barrels - A batted ball with comparable hit types (in terms of exit velocity and launch angle) have led to a minimum .500 batting average and 1.500 slugging percentage	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
2021	BAL	MLB	15	90.0	107.1	25.2	2	13.3%	7	46.7%	6.23	7.26
2024	PIT	AAA	146	86.6	115.1	20.1			42	28.8%	3.15
2024	PIT	MLB	11	83.3	104.3	6.8	1	9.1%	3	27.3%	5.06	5.60
2025	PIT	AAA	53	88.1	108.5	13.3			21	39.6%	2.57
2025	PIT	MLB	31	88.5	112.3	23.9	1	3.2%	13	41.9%	2.03	1.83
Total	- - -	MLB	57	87.9	112.3	21.0	4	7.0%	23	40.4%	3.52

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	Barrels Barrels - A batted ball with comparable hit types (in terms of exit velocity and launch angle) have led to a minimum .500 batting average and 1.500 slugging percentage	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
2021	BAL	MLB	15	90.0	107.1	25.2	2	13.3%	7	46.7%	6.23	7.26
2024	PIT	AAA	146	86.6	115.1	20.1			42	28.8%	3.15
2024	PIT	MLB	11	83.3	104.3	6.8	1	9.1%	3	27.3%	5.06	5.60
2025	PIT	AAA	53	88.1	108.5	13.3			21	39.6%	2.57
2025	PIT	MLB	31	88.5	112.3	23.9	1	3.2%	13	41.9%	2.03	1.83
Total	- - -	MLB	57	87.9	112.3	21.0	4	7.0%	23	40.4%	3.52

Isaac Mattson

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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