Isaac Coffey

Boston Red Sox (AAA)

Age: 26

Bats/Throws: R/R

6'1" / 205

DOB: 6/21/2000

(26 years, 2 months, 15 days)

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Preseason ProjectionsIn-Season ProjectionsMinor LeaguesCollege

Season	Team	Level	Age	W	L	G	GS	IP	K/9	BB/9	HR/9	BABIP	LOB%	GB%	HR/FB	ERA	xERA	FIP	xFIP	WAR
2021	ORU	NCAA	21	9	2	14	14	86.1	9.59	1.36	0.52	.297	72.8%			2.81		3.64
2022	ORU	NCAA	22	7	6	15	15	88.1	7.95	1.63	0.71	.253	64.7%			3.77		4.46
2022	BOS	CPX	22	0	0	2	0	1.2	0.00	10.80	0.00	.333	50.0%	50.0%	0.0%	10.80		7.43	9.04
2023	BOS	A+	23	4	2	11	11	60.1	12.38	1.49	1.64	.294	83.7%	40.3%	20.4%	2.83		3.90	2.79
2023	BOS	AA	23	7	4	12	11	57.1	11.30	3.61	1.73	.257	81.5%	34.3%	16.2%	3.92		4.93	4.15
2023	BOS	MiLB	23	11	6	23	22	117.2	11.86	2.52	1.68	.276	82.4%	37.3%	18.0%	3.37		4.40	3.45
2024	BOS	AA	24	11	4	24	21	113.2	11.72	4.04	0.71	.307	77.4%	38.3%	8.7%	3.17		3.81	3.90
2025	BOS	AA	25	0	1	4	3	9.0	12.00	4.00	0.00	.263	70.0%	47.4%	0.0%	3.00		2.29	3.20
2025	BOS	AAA	25	1	2	13	9	38.1	8.45	6.34	2.35	.267	79.3%	32.5%	18.2%	6.10	4.81	7.67	6.73
2025	BOS	MiLB	25	1	3	17	12	47.1	9.13	5.89	1.90	.266	77.9%	34.6%	16.1%	5.51	4.81	6.65	6.06
2026	Steamer	PROJ	26	0	0	0	0	1.0	7.20	3.83	1.43	.295	68.8%	38.8%		5.16		5.12	5.00	0.0
2026	ZiPS	PROJ	26	4	5	19	16	74.3	7.39	3.88	1.33	.286	67.0%			5.09		5.19		0.1
2026	OOPSY	PROJ	26	0	0	1	1	4.1	7.67	4.05	1.36	.296	68.8%			4.97		4.90		0.0
2026	BOS	AA	26	0	0	3	1	6.0	7.50	3.00	1.50	.368	87.3%	40.0%	16.7%	4.50		7.09	6.78
2026	BOS	AAA	26	0	1	5	5	17.2	10.19	3.57	1.02	.313	75.5%	26.0%	8.7%	4.08	4.76	3.90	4.81
2026	BOS	MiLB	26	0	1	8	6	23.2	9.51	3.42	1.14	.328	79.9%	30.0%	10.3%	4.18	4.76	4.70	5.31
2026	Steamer	ROS	26	0	0	0	0	1.0	7.16	3.88	1.41	.294	68.6%			5.19		5.09		0.0
2026	OOPSY	ROS	26	0	0	1	1	3.8	7.60	4.09	1.42	.293	68.5%			5.07		5.01		0.0

Season	Team	Level	Age	W	L	G	GS	IP	K/9	BB/9	HR/9	BABIP	LOB%	GB%	HR/FB	ERA	xERA	FIP	xFIP	WAR
2021	ORU	NCAA	21	9	2	14	14	86.1	9.59	1.36	0.52	.297	72.8%			2.81		3.64
2022	ORU	NCAA	22	7	6	15	15	88.1	7.95	1.63	0.71	.253	64.7%			3.77		4.46
2022	BOS	CPX	22	0	0	2	0	1.2	0.00	10.80	0.00	.333	50.0%	50.0%	0.0%	10.80		7.43	9.04
2023	BOS	A+	23	4	2	11	11	60.1	12.38	1.49	1.64	.294	83.7%	40.3%	20.4%	2.83		3.90	2.79
2023	BOS	AA	23	7	4	12	11	57.1	11.30	3.61	1.73	.257	81.5%	34.3%	16.2%	3.92		4.93	4.15
2023	BOS	MiLB	23	11	6	23	22	117.2	11.86	2.52	1.68	.276	82.4%	37.3%	18.0%	3.37		4.40	3.45
2024	BOS	AA	24	11	4	24	21	113.2	11.72	4.04	0.71	.307	77.4%	38.3%	8.7%	3.17		3.81	3.90
2025	BOS	AA	25	0	1	4	3	9.0	12.00	4.00	0.00	.263	70.0%	47.4%	0.0%	3.00		2.29	3.20
2025	BOS	AAA	25	1	2	13	9	38.1	8.45	6.34	2.35	.267	79.3%	32.5%	18.2%	6.10	4.81	7.67	6.73
2025	BOS	MiLB	25	1	3	17	12	47.1	9.13	5.89	1.90	.266	77.9%	34.6%	16.1%	5.51	4.81	6.65	6.06
2026	Steamer	PROJ	26	0	0	0	0	1.0	7.20	3.83	1.43	.295	68.8%	38.8%		5.16		5.12	5.00	0.0
2026	ZiPS	PROJ	26	4	5	19	16	74.3	7.39	3.88	1.33	.286	67.0%			5.09		5.19		0.1
2026	OOPSY	PROJ	26	0	0	1	1	4.1	7.67	4.05	1.36	.296	68.8%			4.97		4.90		0.0
2026	BOS	AA	26	0	0	3	1	6.0	7.50	3.00	1.50	.368	87.3%	40.0%	16.7%	4.50		7.09	6.78
2026	BOS	AAA	26	0	1	5	5	17.2	10.19	3.57	1.02	.313	75.5%	26.0%	8.7%	4.08	4.76	3.90	4.81
2026	BOS	MiLB	26	0	1	8	6	23.2	9.51	3.42	1.14	.328	79.9%	30.0%	10.3%	4.18	4.76	4.70	5.31
2026	Steamer	ROS	26	0	0	0	0	1.0	7.16	3.88	1.41	.294	68.6%			5.19		5.09		0.0
2026	OOPSY	ROS	26	0	0	1	1	3.8	7.60	4.09	1.42	.293	68.5%			5.07		5.01		0.0

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesCollege

Season	Team	Level	W	L	ERA	G	GS	QS	CG	ShO	HLD	BS	IP	TBF	H	R	ER	HR	BB	IBB	HBP	WP	BK	SO
2021	ORU	NCAA	9	2	2.81	14	14		4	2			86.1	352	73	32	27	5	13		13	3	0	92
2022	ORU	NCAA	7	6	3.77	15	15		3	2			88.1	362	69	42	37	7	16		16	1	0	78
2022	BOS	CPX	0	0	10.80	2	0		0	0	0	0	1.2	8	2	2	2	0	2	0	0	1	0	0
2023	BOS	A+	4	2	2.83	11	11		0	0	0	0	60.1	241	51	23	19	11	10	0	1	3	0	83
2023	BOS	AA	7	4	3.92	12	11		0	0	0	0	57.1	251	46	27	25	11	23	0	9	2	0	72
2023	BOS	MiLB	11	6	3.37	23	22		0	0	0	0	117.2	492	97	50	44	22	33	0	10	5	0	155
2024	BOS	AA	11	4	3.17	24	21		0	0	0	1	113.2	494	89	47	40	9	51	0	25	3	0	148
2025	BOS	AA	0	1	3.00	4	3		0	0	0	0	9.0	36	5	3	3	0	4	0	1	0	0	12
2025	BOS	AAA	1	2	6.10	13	9		0	0	0	0	38.1	185	38	26	26	10	27	0	7	1	0	36
2025	BOS	MiLB	1	3	5.51	17	12		0	0	0	0	47.1	221	43	29	29	10	31	0	8	1	0	48
2026	Steamer	PROJ	0	0	5.16	0	0	0	0	0	0		1.0	4	1	1	1	0	0	0	0			1
2026	ZiPS	PROJ	4	5	5.09	19	16				0		74.3	333	73	45	42	11	32	0	12	2	0	61
2026	OOPSY	PROJ	0	0	4.97	1	1	0			0		4.1	18	4	2	2	1	2	0	0			4
2026	BOS	AA	0	0	4.50	3	1		0	0	1	0	6.0	31	8	3	3	1	2	0	4	0	0	5
2026	BOS	AAA	0	1	4.08	5	5		0	0	0	0	17.2	77	17	8	8	2	7	0	0	0	0	20
2026	BOS	MiLB	0	1	4.18	8	6		0	0	1	0	23.2	108	25	11	11	3	9	0	4	0	0	25
2026	Steamer	ROS	0	0	5.19	0	0	0	0	0	0		1.0	4	1	1	1	0	0		0			1
2026	OOPSY	ROS	0	0	5.07	1	1	0			0		3.8	17	4	2	2	1	2	0	0			3

Season	Team	Level	W	L	ERA	G	GS	QS	CG	ShO	HLD	BS	IP	TBF	H	R	ER	HR	BB	IBB	HBP	WP	BK	SO
2021	ORU	NCAA	9	2	2.81	14	14		4	2			86.1	352	73	32	27	5	13		13	3	0	92
2022	ORU	NCAA	7	6	3.77	15	15		3	2			88.1	362	69	42	37	7	16		16	1	0	78
2022	BOS	CPX	0	0	10.80	2	0		0	0	0	0	1.2	8	2	2	2	0	2	0	0	1	0	0
2023	BOS	A+	4	2	2.83	11	11		0	0	0	0	60.1	241	51	23	19	11	10	0	1	3	0	83
2023	BOS	AA	7	4	3.92	12	11		0	0	0	0	57.1	251	46	27	25	11	23	0	9	2	0	72
2023	BOS	MiLB	11	6	3.37	23	22		0	0	0	0	117.2	492	97	50	44	22	33	0	10	5	0	155
2024	BOS	AA	11	4	3.17	24	21		0	0	0	1	113.2	494	89	47	40	9	51	0	25	3	0	148
2025	BOS	AA	0	1	3.00	4	3		0	0	0	0	9.0	36	5	3	3	0	4	0	1	0	0	12
2025	BOS	AAA	1	2	6.10	13	9		0	0	0	0	38.1	185	38	26	26	10	27	0	7	1	0	36
2025	BOS	MiLB	1	3	5.51	17	12		0	0	0	0	47.1	221	43	29	29	10	31	0	8	1	0	48
2026	Steamer	PROJ	0	0	5.16	0	0	0	0	0	0		1.0	4	1	1	1	0	0	0	0			1
2026	ZiPS	PROJ	4	5	5.09	19	16				0		74.3	333	73	45	42	11	32	0	12	2	0	61
2026	OOPSY	PROJ	0	0	4.97	1	1	0			0		4.1	18	4	2	2	1	2	0	0			4
2026	BOS	AA	0	0	4.50	3	1		0	0	1	0	6.0	31	8	3	3	1	2	0	4	0	0	5
2026	BOS	AAA	0	1	4.08	5	5		0	0	0	0	17.2	77	17	8	8	2	7	0	0	0	0	20
2026	BOS	MiLB	0	1	4.18	8	6		0	0	1	0	23.2	108	25	11	11	3	9	0	4	0	0	25
2026	Steamer	ROS	0	0	5.19	0	0	0	0	0	0		1.0	4	1	1	1	0	0		0			1
2026	OOPSY	ROS	0	0	5.07	1	1	0			0		3.8	17	4	2	2	1	2	0	0			3

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesAveragesCollege

Season	Team	Level	K/9	BB/9	K/BB	HR/9	K%	BB%	K-BB%	AVG	WHIP	BABIP	LOB%	ERA-	FIP-	FIP
2021	ORU	NCAA	9.59	1.36	7.08	0.52	26.1%	3.7%	22.4%	.224	1.00	.297	72.8%			3.64
2022	ORU	NCAA	7.95	1.63	4.88	0.71	21.5%	4.4%	17.1%	.209	0.96	.253	64.7%			4.46
2022	BOS	CPX	0.00	10.80	0.00	0.00	0.0%	25.0%	-25.0%	.333	2.40	.333	50.0%	226	165	7.43
2023	BOS	A+	12.38	1.49	8.30	1.64	34.4%	4.1%	30.3%	.222	1.01	.294	83.7%	62	87	3.90
2023	BOS	AA	11.30	3.61	3.13	1.73	28.7%	9.2%	19.5%	.210	1.20	.257	81.5%	90	116	4.93
2023	BOS	MiLB	11.86	2.52	4.70	1.68	31.5%	6.7%	24.8%	.216	1.10	.276	82.4%	76	101	4.40
2024	BOS	AA	11.72	4.04	2.90	0.71	30.0%	10.3%	19.6%	.213	1.23	.307	77.4%	79	97	3.81
2025	BOS	AA	12.00	4.00	3.00	0.00	33.3%	11.1%	22.2%	.161	1.00	.263	70.0%	76	60	2.29
2025	BOS	AAA	8.45	6.34	1.33	2.35	19.5%	14.6%	4.9%	.252	1.70	.267	79.3%	130	164	7.67
2025	BOS	MiLB	9.13	5.89	1.55	1.90	21.7%	14.0%	7.7%	.236	1.56	.266	77.9%	120	144	6.65
2026	Steamer	PROJ	7.20	3.83	1.88	1.43	18.0%	9.5%	8.4%	.264	1.47	.295	68.8%			5.12
2026	ZiPS	PROJ	7.39	3.88	1.91	1.33	18.3%	9.6%	8.7%	.253	1.41	.286	67.0%			5.19
2026	OOPSY	PROJ	7.67	4.05	1.90	1.36	19.3%	10.2%	9.1%	.259	1.47	.296	68.8%			4.90
2026	BOS	AA	7.50	3.00	2.50	1.50	16.1%	6.5%	9.7%	.320	1.67	.368	87.3%	93	151	7.09
2026	BOS	AAA	10.19	3.57	2.86	1.02	26.0%	9.1%	16.9%	.243	1.36	.313	75.5%	83	80	3.90
2026	BOS	MiLB	9.51	3.42	2.78	1.14	23.1%	8.3%	14.8%	.263	1.44	.328	79.9%	86	98	4.70
2026	Steamer	ROS	7.16	3.88	1.84	1.41	17.8%	9.7%	8.1%	.263	1.47	.294	68.6%			5.09
2026	OOPSY	ROS	7.60	4.09	1.86	1.42	19.0%	10.2%	8.8%	.259	1.47	.293	68.5%			5.01

Season	Team	Level	K/9	BB/9	K/BB	HR/9	K%	BB%	K-BB%	AVG	WHIP	BABIP	LOB%	ERA-	FIP-	FIP
2021	ORU	NCAA	9.59	1.36	7.08	0.52	26.1%	3.7%	22.4%	.224	1.00	.297	72.8%			3.64
2022	ORU	NCAA	7.95	1.63	4.88	0.71	21.5%	4.4%	17.1%	.209	0.96	.253	64.7%			4.46
2022	BOS	CPX	0.00	10.80	0.00	0.00	0.0%	25.0%	-25.0%	.333	2.40	.333	50.0%	226	165	7.43
2023	BOS	A+	12.38	1.49	8.30	1.64	34.4%	4.1%	30.3%	.222	1.01	.294	83.7%	62	87	3.90
2023	BOS	AA	11.30	3.61	3.13	1.73	28.7%	9.2%	19.5%	.210	1.20	.257	81.5%	90	116	4.93
2023	BOS	MiLB	11.86	2.52	4.70	1.68	31.5%	6.7%	24.8%	.216	1.10	.276	82.4%	76	101	4.40
2024	BOS	AA	11.72	4.04	2.90	0.71	30.0%	10.3%	19.6%	.213	1.23	.307	77.4%	79	97	3.81
2025	BOS	AA	12.00	4.00	3.00	0.00	33.3%	11.1%	22.2%	.161	1.00	.263	70.0%	76	60	2.29
2025	BOS	AAA	8.45	6.34	1.33	2.35	19.5%	14.6%	4.9%	.252	1.70	.267	79.3%	130	164	7.67
2025	BOS	MiLB	9.13	5.89	1.55	1.90	21.7%	14.0%	7.7%	.236	1.56	.266	77.9%	120	144	6.65
2026	Steamer	PROJ	7.20	3.83	1.88	1.43	18.0%	9.5%	8.4%	.264	1.47	.295	68.8%			5.12
2026	ZiPS	PROJ	7.39	3.88	1.91	1.33	18.3%	9.6%	8.7%	.253	1.41	.286	67.0%			5.19
2026	OOPSY	PROJ	7.67	4.05	1.90	1.36	19.3%	10.2%	9.1%	.259	1.47	.296	68.8%			4.90
2026	BOS	AA	7.50	3.00	2.50	1.50	16.1%	6.5%	9.7%	.320	1.67	.368	87.3%	93	151	7.09
2026	BOS	AAA	10.19	3.57	2.86	1.02	26.0%	9.1%	16.9%	.243	1.36	.313	75.5%	83	80	3.90
2026	BOS	MiLB	9.51	3.42	2.78	1.14	23.1%	8.3%	14.8%	.263	1.44	.328	79.9%	86	98	4.70
2026	Steamer	ROS	7.16	3.88	1.84	1.41	17.8%	9.7%	8.1%	.263	1.47	.294	68.6%			5.09
2026	OOPSY	ROS	7.60	4.09	1.86	1.42	19.0%	10.2%	8.8%	.259	1.47	.293	68.5%			5.01

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesCollege

Season	Team	Level	Events	EV	maxEV	LA	Barrels	Barrel%	HardHit	HardHit%	divider	ERA	xERA
2025	BOS	AAA	115	88.4	110.9	21.0	8	7.0%	47	40.9%		6.10	4.81
2026	BOS	AAA	50	87.3	109.7	26.1	4	8.0%	18	36.0%		4.08	4.76

Season	Team	Level	Events	EV	maxEV	LA	Barrels	Barrel%	HardHit	HardHit%	divider	ERA	xERA
2025	BOS	AAA	115	88.4	110.9	21.0	8	7.0%	47	40.9%		6.10	4.81
2026	BOS	AAA	50	87.3	109.7	26.1	4	8.0%	18	36.0%		4.08	4.76