Ryan Zeferjahn

Los Angeles Angels

Age: 27

Bats/Throws: R/R

6'5" / 209

DOB: 2/28/1998

(27 years, 1 month, 27 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
2019	BOS	A-	21	0	2	0	12	12	22.0	12.68	4.91	0.82	.415	74.6%	38.9%	10.0%		4.50		3.81	3.31
2021	BOS	CPX	23	0	0	0	4	4	14.0	11.57	1.93	1.29	.313	75.8%	39.4%	14.3%		3.21		4.29	3.54
2021	BOS	A	23	1	4	0	12	12	41.2	8.86	3.24	0.43	.381	43.2%	39.7%	4.8%		6.91		3.86	4.59
2021	BOS	MiLB	23	1	4	0	16	16	55.2	9.54	2.91	0.65	.367	48.5%	39.6%	7.1%		5.98		3.97	4.33
2022	BOS	A+	24	2	4	1	28	5	60.2	10.83	4.30	0.89	.342	62.4%	37.6%	9.7%		5.79		4.37	4.59
2022	BOS	AA	24	3	0	0	6	0	10.2	5.91	3.38	0.84	.083	100.0%	40.0%	7.7%		0.84		4.73	5.40
2022	BOS	MiLB	24	5	4	1	34	5	71.1	10.09	4.16	0.88	.307	65.5%	37.9%	9.3%		5.05		4.42	4.71
2023	BOS	A	25	1	0	0	2	1	3.0	6.00	0.00	0.00	.300	100.0%	50.0%	0.0%		0.00		2.37	3.06
2023	BOS	AA	25	0	4	2	34	0	43.0	14.23	8.37	1.47	.313	75.1%	33.0%	16.3%		5.02		5.44	4.77
2023	BOS	MiLB	25	1	4	2	36	1	46.0	13.70	7.83	1.37	.312	76.2%	34.7%	15.6%		4.70		5.24	4.65
2023	BOS	ST	25	1	0	0	1	0	1.0	9.00	0.00	0.00	.000	100.0%	50.0%	0.0%		0.00		1.81	3.59
2024	BOS	AA	26	1	0	3	7	0	13.2	14.49	1.98	0.00	.310	83.3%	25.9%	0.0%		0.00		0.82	1.81
2024	BOS	AAA	26	0	3	4	18	1	24.2	11.31	6.20	1.09	.293	64.4%	36.2%	13.0%		5.47		5.43	5.53
2024	LAA	AAA	26	0	0	0	5	0	7.2	9.39	1.17	1.17	.222	87.0%	31.6%	20.0%		2.35		3.83	3.33
2024	---	MiLB	26	1	3	7	30	1	46.0	11.93	4.11	0.78	.286	70.4%	32.7%	10.3%		3.33		3.80	4.06
2024	BOS	ST	26	0	0	0	4	0	3.0	12.00	15.00	0.00	.600	45.5%	20.0%	0.0%		18.00		6.07	9.49
2024	LAA	MLB	26	0	0	0	12	0	17.0	9.53	3.18	0.00	.184	73.3%	39.5%	0.0%	97.5	2.12	1.67	2.46	4.15	0.4
2025	LAA	ST	27	0	0	0	8	0	9.0	8.00	4.00	0.00	.250	100.0%	41.7%	0.0%		0.00		3.29	5.26
2025	FGDC	PROJ	27	3	3	1	61	0	61.0	8.84	4.39	1.23	.290	70.9%				4.60		4.70		-0.1
2025	Steamer	PROJ	27	3	3	1	61	0	61.0	8.80	4.26	1.33	.288	72.4%	37.7%			4.52		4.74	4.63	-0.1
2025	ZiPS	PROJ	27	2	3	1	36	3	55.7	8.89	4.52	1.13	.291	69.4%				4.69		4.66		0.1
2025	ZiPS DC	PROJ	27	2	3	1	61	0	61.0	8.89	4.52	1.13	.291	69.4%				4.69		4.66		-0.1
2025	ATC	PROJ	27	2	3	1	48	0	57.0	9.53	4.28	1.10	.295	69.5%				4.45		4.29		0.2
2025	THE BAT	PROJ	27	2	2	1	48	0	57.0	10.10	3.94	1.18	.283	71.2%				4.22		4.14		0.3
2025	OOPSY	PROJ	27	3	3	1	61	0	61.0	10.03	4.91	1.12	.267	75.4%				3.84		4.34		0.1
2025	LAA	MLB	27	1	0	1	9	0	6.2	18.90	4.05	2.70	.250	95.2%	20.0%	33.3%	98.2	4.05	1.65	4.08	1.48	0.0
2025	FGDC	ROS	27	2	3	1	54	0	54.0	9.63	4.47	1.25	.293	71.0%				4.52		4.43		0.1
2025	Steamer	ROS	27	3	3	1	54	0	54.0	9.51	4.43	1.24	.286	73.4%				4.26		4.37		0.1
2025	ZiPS	ROS	27	2	3		33	2	47.0	9.74	4.51	1.26	.300	68.7%				4.78		4.49		0.1
2025	ZiPS DC	ROS	27	2	3	1	54	0	54.0	9.74	4.51	1.26	.300	68.7%				4.78		4.49		0.0
2025	ATC DC	ROS	27	2	2	1	54	0	54.0	9.53	4.28	1.10	.295	69.5%				4.45		4.15		0.3
2025	THE BAT	ROS	27	2	1	1	55	0	36.0	11.46	4.13	1.19	.285	72.9%				3.99		3.77		0.3
2025	OOPSY	ROS	27	3	3	1	54	0	54.0	10.56	4.85	1.21	.263	76.2%				3.80		4.20		0.2
Total	- - -	MLB		1	0	1	21	0	23.2	12.17	3.42	0.76	.196	78.1%	35.4%	8.0%	97.7	2.66		2.92	3.40	0.4

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
2019	BOS	A-	21	0	2	0	12	12	22.0	12.68	4.91	0.82	.415	74.6%	38.9%	10.0%		4.50		3.81	3.31
2021	BOS	CPX	23	0	0	0	4	4	14.0	11.57	1.93	1.29	.313	75.8%	39.4%	14.3%		3.21		4.29	3.54
2021	BOS	A	23	1	4	0	12	12	41.2	8.86	3.24	0.43	.381	43.2%	39.7%	4.8%		6.91		3.86	4.59
2021	BOS	MiLB	23	1	4	0	16	16	55.2	9.54	2.91	0.65	.367	48.5%	39.6%	7.1%		5.98		3.97	4.33
2022	BOS	A+	24	2	4	1	28	5	60.2	10.83	4.30	0.89	.342	62.4%	37.6%	9.7%		5.79		4.37	4.59
2022	BOS	AA	24	3	0	0	6	0	10.2	5.91	3.38	0.84	.083	100.0%	40.0%	7.7%		0.84		4.73	5.40
2022	BOS	MiLB	24	5	4	1	34	5	71.1	10.09	4.16	0.88	.307	65.5%	37.9%	9.3%		5.05		4.42	4.71
2023	BOS	A	25	1	0	0	2	1	3.0	6.00	0.00	0.00	.300	100.0%	50.0%	0.0%		0.00		2.37	3.06
2023	BOS	AA	25	0	4	2	34	0	43.0	14.23	8.37	1.47	.313	75.1%	33.0%	16.3%		5.02		5.44	4.77
2023	BOS	MiLB	25	1	4	2	36	1	46.0	13.70	7.83	1.37	.312	76.2%	34.7%	15.6%		4.70		5.24	4.65
2023	BOS	ST	25	1	0	0	1	0	1.0	9.00	0.00	0.00	.000	100.0%	50.0%	0.0%		0.00		1.81	3.59
2024	BOS	AA	26	1	0	3	7	0	13.2	14.49	1.98	0.00	.310	83.3%	25.9%	0.0%		0.00		0.82	1.81
2024	BOS	AAA	26	0	3	4	18	1	24.2	11.31	6.20	1.09	.293	64.4%	36.2%	13.0%		5.47		5.43	5.53
2024	LAA	AAA	26	0	0	0	5	0	7.2	9.39	1.17	1.17	.222	87.0%	31.6%	20.0%		2.35		3.83	3.33
2024	---	MiLB	26	1	3	7	30	1	46.0	11.93	4.11	0.78	.286	70.4%	32.7%	10.3%		3.33		3.80	4.06
2024	BOS	ST	26	0	0	0	4	0	3.0	12.00	15.00	0.00	.600	45.5%	20.0%	0.0%		18.00		6.07	9.49
2024	LAA	MLB	26	0	0	0	12	0	17.0	9.53	3.18	0.00	.184	73.3%	39.5%	0.0%	97.5	2.12	1.67	2.46	4.15	0.4
2025	LAA	ST	27	0	0	0	8	0	9.0	8.00	4.00	0.00	.250	100.0%	41.7%	0.0%		0.00		3.29	5.26
2025	FGDC	PROJ	27	3	3	1	61	0	61.0	8.84	4.39	1.23	.290	70.9%				4.60		4.70		-0.1
2025	Steamer	PROJ	27	3	3	1	61	0	61.0	8.80	4.26	1.33	.288	72.4%	37.7%			4.52		4.74	4.63	-0.1
2025	ZiPS	PROJ	27	2	3	1	36	3	55.7	8.89	4.52	1.13	.291	69.4%				4.69		4.66		0.1
2025	ZiPS DC	PROJ	27	2	3	1	61	0	61.0	8.89	4.52	1.13	.291	69.4%				4.69		4.66		-0.1
2025	ATC	PROJ	27	2	3	1	48	0	57.0	9.53	4.28	1.10	.295	69.5%				4.45		4.29		0.2
2025	THE BAT	PROJ	27	2	2	1	48	0	57.0	10.10	3.94	1.18	.283	71.2%				4.22		4.14		0.3
2025	OOPSY	PROJ	27	3	3	1	61	0	61.0	10.03	4.91	1.12	.267	75.4%				3.84		4.34		0.1
2025	LAA	MLB	27	1	0	1	9	0	6.2	18.90	4.05	2.70	.250	95.2%	20.0%	33.3%	98.2	4.05	1.65	4.08	1.48	0.0
2025	FGDC	ROS	27	2	3	1	54	0	54.0	9.63	4.47	1.25	.293	71.0%				4.52		4.43		0.1
2025	Steamer	ROS	27	3	3	1	54	0	54.0	9.51	4.43	1.24	.286	73.4%				4.26		4.37		0.1
2025	ZiPS	ROS	27	2	3		33	2	47.0	9.74	4.51	1.26	.300	68.7%				4.78		4.49		0.1
2025	ZiPS DC	ROS	27	2	3	1	54	0	54.0	9.74	4.51	1.26	.300	68.7%				4.78		4.49		0.0
2025	ATC DC	ROS	27	2	2	1	54	0	54.0	9.53	4.28	1.10	.295	69.5%				4.45		4.15		0.3
2025	THE BAT	ROS	27	2	1	1	55	0	36.0	11.46	4.13	1.19	.285	72.9%				3.99		3.77		0.3
2025	OOPSY	ROS	27	3	3	1	54	0	54.0	10.56	4.85	1.21	.263	76.2%				3.80		4.20		0.2
Total	- - -	MLB		1	0	1	21	0	23.2	12.17	3.42	0.76	.196	78.1%	35.4%	8.0%	97.7	2.66		2.92	3.40	0.4

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
2019	BOS	A-	0	2	4.50	12	12		0	0	0	0	0	22.0	101	24	12	11	2	12	0	3	2	0	31
2021	BOS	CPX	0	0	3.21	4	4		0	0	0	0	0	14.0	56	12	6	5	2	3	0	1	2	0	18
2021	BOS	A	1	4	6.91	12	12		0	0	0	0	0	41.2	194	53	41	32	2	15	0	2	4	0	41
2021	BOS	MiLB	1	4	5.98	16	16		0	0	0	0	0	55.2	250	65	47	37	4	18	0	3	6	0	59
2022	BOS	A+	2	4	5.79	28	5		0	0	1	3	2	60.2	268	58	41	39	6	29	0	8	10	2	73
2022	BOS	AA	3	0	0.84	6	0		0	0	0	1	0	10.2	37	3	1	1	1	4	0	1	0	0	7
2022	BOS	MiLB	5	4	5.05	34	5		0	0	1	4	2	71.1	305	61	42	40	7	33	0	9	10	2	80
2023	BOS	A	1	0	0.00	2	1		0	0	0	0	0	3.0	12	3	0	0	0	0	0	0	0	0	2
2023	BOS	AA	0	4	5.02	34	0		0	0	2	6	2	43.0	204	33	27	24	7	40	0	6	4	0	68
2023	BOS	MiLB	1	4	4.70	36	1		0	0	2	6	2	46.0	216	36	27	24	7	40	0	6	4	0	70
2023	BOS	ST	1	0	0.00	1	0		0	0	0	0	0	1.0	3	0	0	0	0	0	0	0	0	0	1
2024	BOS	AA	1	0	0.00	7	0		0	0	3	1	0	13.2	54	9	2	0	0	3	0	0	1	0	22
2024	BOS	AAA	0	3	5.47	18	1		0	0	4	0	1	24.2	115	20	18	15	3	17	1	6	1	1	31
2024	LAA	AAA	0	0	2.35	5	0		0	0	0	0	0	7.2	28	5	2	2	1	1	0	0	0	0	8
2024	---	MiLB	1	3	3.33	30	1		0	0	7	1	1	46.0	197	34	22	17	4	21	1	6	2	1	61
2024	BOS	ST	0	0	18.00	4	0		0	0	0	1	0	3.0	19	6	6	6	0	5	0	0	0	0	4
2024	LAA	MLB	0	0	2.12	12	0	0	0	0	0	0	0	17.0	64	7	4	4	0	6	1	2	0	0	18
2025	LAA	ST	0	0	0.00	8	0		0	0	0	1	0	9.0	36	6	0	0	0	4	0	0	0	0	8
2025	FGDC	PROJ	3	3	4.60	61	0	0			1	12		61.0	269	56	33	31	8	30		5			60
2025	Steamer	PROJ	3	3	4.52	61	0	0	0	0	1	12		61.0	267	57	33	31	9	29	2	4			60
2025	ZiPS	PROJ	2	3	4.69	36	3				1	12		55.7	247	51	31	29	7	28	1	6	4	1	55
2025	ZiPS DC	PROJ	2	3	4.69	61	0	0			1	12		61.0	271	56	34	32	8	31		7			60
2025	ATC	PROJ	2	3	4.45	48	0	0			1	7		57.0	250	51	31	28	7	27	2	4			61
2025	THE BAT	PROJ	2	2	4.22	48	0	0			1	12		57.0	247	49	29	27	8	25	2	4			64
2025	OOPSY	PROJ	3	3	3.84	61	0	0			1	12		61.0	269	50	28	26	8	33		3			68
2025	LAA	MLB	1	0	4.05	9	0	0	0	0	1	2	0	6.2	27	4	3	3	2	3	0	0	0	0	14
2025	FGDC	ROS	2	3	4.52	54	0	0			1	14		54.0	238	49	30	27	8	27		4			58
2025	Steamer	ROS	3	3	4.26	54	0	0	0	0	1	14		54.0	237	48	28	26	8	27		3			58
2025	ZiPS	ROS	2	3	4.78	33	2							47.0	208	43	27	25	7	24		5			51
2025	ZiPS DC	ROS	2	3	4.78	54	0	0			1	14		54.0	239	50	31	29	8	27		5			59
2025	ATC DC	ROS	2	2	4.45	54	0	0			1	14		54.0	237	49	29	27	7	26		4			58
2025	THE BAT	ROS	2	1	3.99	55	0				1	14		36.0	152	28	17	16	5	16	1	2			45
2025	OOPSY	ROS	3	3	3.80	54	0	0			1	14		54.0	240	43	25	23	7	29		3			64
Total	- - -	MLB	1	0	2.66	21	0	0	0	0	1	2	0	23.2	91	11	7	7	2	9	1	2	0	0	32

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
2019	BOS	A-	0	2	4.50	12	12		0	0	0	0	0	22.0	101	24	12	11	2	12	0	3	2	0	31
2021	BOS	CPX	0	0	3.21	4	4		0	0	0	0	0	14.0	56	12	6	5	2	3	0	1	2	0	18
2021	BOS	A	1	4	6.91	12	12		0	0	0	0	0	41.2	194	53	41	32	2	15	0	2	4	0	41
2021	BOS	MiLB	1	4	5.98	16	16		0	0	0	0	0	55.2	250	65	47	37	4	18	0	3	6	0	59
2022	BOS	A+	2	4	5.79	28	5		0	0	1	3	2	60.2	268	58	41	39	6	29	0	8	10	2	73
2022	BOS	AA	3	0	0.84	6	0		0	0	0	1	0	10.2	37	3	1	1	1	4	0	1	0	0	7
2022	BOS	MiLB	5	4	5.05	34	5		0	0	1	4	2	71.1	305	61	42	40	7	33	0	9	10	2	80
2023	BOS	A	1	0	0.00	2	1		0	0	0	0	0	3.0	12	3	0	0	0	0	0	0	0	0	2
2023	BOS	AA	0	4	5.02	34	0		0	0	2	6	2	43.0	204	33	27	24	7	40	0	6	4	0	68
2023	BOS	MiLB	1	4	4.70	36	1		0	0	2	6	2	46.0	216	36	27	24	7	40	0	6	4	0	70
2023	BOS	ST	1	0	0.00	1	0		0	0	0	0	0	1.0	3	0	0	0	0	0	0	0	0	0	1
2024	BOS	AA	1	0	0.00	7	0		0	0	3	1	0	13.2	54	9	2	0	0	3	0	0	1	0	22
2024	BOS	AAA	0	3	5.47	18	1		0	0	4	0	1	24.2	115	20	18	15	3	17	1	6	1	1	31
2024	LAA	AAA	0	0	2.35	5	0		0	0	0	0	0	7.2	28	5	2	2	1	1	0	0	0	0	8
2024	---	MiLB	1	3	3.33	30	1		0	0	7	1	1	46.0	197	34	22	17	4	21	1	6	2	1	61
2024	BOS	ST	0	0	18.00	4	0		0	0	0	1	0	3.0	19	6	6	6	0	5	0	0	0	0	4
2024	LAA	MLB	0	0	2.12	12	0	0	0	0	0	0	0	17.0	64	7	4	4	0	6	1	2	0	0	18
2025	LAA	ST	0	0	0.00	8	0		0	0	0	1	0	9.0	36	6	0	0	0	4	0	0	0	0	8
2025	FGDC	PROJ	3	3	4.60	61	0	0			1	12		61.0	269	56	33	31	8	30		5			60
2025	Steamer	PROJ	3	3	4.52	61	0	0	0	0	1	12		61.0	267	57	33	31	9	29	2	4			60
2025	ZiPS	PROJ	2	3	4.69	36	3				1	12		55.7	247	51	31	29	7	28	1	6	4	1	55
2025	ZiPS DC	PROJ	2	3	4.69	61	0	0			1	12		61.0	271	56	34	32	8	31		7			60
2025	ATC	PROJ	2	3	4.45	48	0	0			1	7		57.0	250	51	31	28	7	27	2	4			61
2025	THE BAT	PROJ	2	2	4.22	48	0	0			1	12		57.0	247	49	29	27	8	25	2	4			64
2025	OOPSY	PROJ	3	3	3.84	61	0	0			1	12		61.0	269	50	28	26	8	33		3			68
2025	LAA	MLB	1	0	4.05	9	0	0	0	0	1	2	0	6.2	27	4	3	3	2	3	0	0	0	0	14
2025	FGDC	ROS	2	3	4.52	54	0	0			1	14		54.0	238	49	30	27	8	27		4			58
2025	Steamer	ROS	3	3	4.26	54	0	0	0	0	1	14		54.0	237	48	28	26	8	27		3			58
2025	ZiPS	ROS	2	3	4.78	33	2							47.0	208	43	27	25	7	24		5			51
2025	ZiPS DC	ROS	2	3	4.78	54	0	0			1	14		54.0	239	50	31	29	8	27		5			59
2025	ATC DC	ROS	2	2	4.45	54	0	0			1	14		54.0	237	49	29	27	7	26		4			58
2025	THE BAT	ROS	2	1	3.99	55	0				1	14		36.0	152	28	17	16	5	16	1	2			45
2025	OOPSY	ROS	3	3	3.80	54	0	0			1	14		54.0	240	43	25	23	7	29		3			64
Total	- - -	MLB	1	0	2.66	21	0	0	0	0	1	2	0	23.2	91	11	7	7	2	9	1	2	0	0	32

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
2019	BOS	A-	12.68	4.91	2.58	0.82	30.7%	11.9%	18.8%	.279	1.64	.415	74.6%	122	108	3.81
2021	BOS	CPX	11.57	1.93	6.00	1.29	32.1%	5.4%	26.8%	.231	1.07	.313	75.8%	60	85	4.29
2021	BOS	A	8.86	3.24	2.73	0.43	21.1%	7.7%	13.4%	.299	1.63	.381	43.2%	142	83	3.86
2021	BOS	MiLB	9.54	2.91	3.28	0.65	23.6%	7.2%	16.4%	.284	1.49	.367	48.5%	121	83	3.97
2022	BOS	A+	10.83	4.30	2.52	0.89	27.2%	10.8%	16.4%	.251	1.43	.342	62.4%	127	98	4.37
2022	BOS	AA	5.91	3.38	1.75	0.84	18.9%	10.8%	8.1%	.094	0.66	.083	100.0%	19	109	4.73
2022	BOS	MiLB	10.09	4.16	2.42	0.88	26.2%	10.8%	15.4%	.232	1.32	.307	65.5%	111	100	4.42
2023	BOS	A	6.00	0.00	2.00	0.00	16.7%	0.0%	16.7%	.250	1.00	.300	100.0%	0	57	2.37
2023	BOS	AA	14.23	8.37	1.70	1.47	33.3%	19.6%	13.7%	.209	1.70	.313	75.1%	114	128	5.44
2023	BOS	MiLB	13.70	7.83	1.75	1.37	32.4%	18.5%	13.9%	.212	1.65	.312	76.2%	107	123	5.24
2023	BOS	ST	9.00	0.00	1.00	0.00	33.3%	0.0%	33.3%	.000	0.00	.000	100.0%	0	37	1.81
2024	BOS	AA	14.49	1.98	7.33	0.00	40.7%	5.6%	35.2%	.176	0.88	.310	83.3%	0	21	0.82
2024	BOS	AAA	11.31	6.20	1.82	1.09	27.0%	14.8%	12.2%	.217	1.50	.293	64.4%	113	112	5.43
2024	LAA	AAA	9.39	1.17	8.00	1.17	28.6%	3.6%	25.0%	.185	0.78	.222	87.0%	44	74	3.83
2024	---	MiLB	11.93	4.11	2.90	0.78	31.0%	10.7%	20.3%	.200	1.20	.286	70.4%	68	78	3.80
2024	BOS	ST	12.00	15.00	0.80	0.00	21.1%	26.3%	-5.3%	.429	3.67	.600	45.5%	370	130	6.07
2024	LAA	MLB	9.53	3.18	3.00	0.00	28.1%	9.4%	18.8%	.125	0.76	.184	73.3%	52	58	2.46
2024			8.60	3.12	2.76	1.14	22.6%	8.2%	14.4%	.241	1.27	.289	72.1%			4.11
2025	LAA	ST	8.00	4.00	2.00	0.00	22.2%	11.1%	11.1%	.188	1.11	.250	100.0%	0	69	3.29
2025	FGDC	PROJ	8.84	4.39	2.01	1.23	22.3%	11.1%	11.2%	.241	1.41	.290	70.9%			4.70
2025	Steamer	PROJ	8.80	4.26	2.07	1.33	22.3%	10.8%	11.5%	.242	1.40	.288	72.4%			4.74
2025	ZiPS	PROJ	8.89	4.52	1.96	1.13	22.3%	11.3%	10.9%	.239	1.42	.291	69.4%			4.66
2025	ZiPS DC	PROJ	8.89	4.52	1.96	1.13	22.3%	11.3%	10.9%	.239	1.42	.291	69.4%			4.66
2025	ATC	PROJ	9.53	4.28	2.22	1.10	24.3%	10.9%	13.4%	.235	1.37	.295	69.5%			4.29
2025	THE BAT	PROJ	10.10	3.94	2.56	1.18	26.1%	10.2%	15.9%	.224	1.29	.283	71.2%			4.14
2025	OOPSY	PROJ	10.03	4.91	2.04	1.12	25.3%	12.4%	12.9%	.213	1.36	.267	75.4%			4.34
2025	LAA	MLB	18.90	4.05	4.67	2.70	51.9%	11.1%	40.7%	.167	1.05	.250	95.2%	100	98	4.08
2025			8.53	3.48	2.45	1.09	22.4%	9.1%	13.2%	.235	1.28	.283	72.4%			4.17
2025	FGDC	ROS	9.63	4.47	2.15	1.25	24.5%	11.4%	13.1%	.236	1.39	.293	71.0%			4.43
2025	Steamer	ROS	9.51	4.43	2.15	1.24	24.3%	11.3%	13.0%	.232	1.37	.286	73.4%			4.37
2025	ZiPS	ROS	9.74	4.51	2.16	1.26	24.7%	11.4%	13.2%	.240	1.41	.300	68.7%			4.49
2025	ZiPS DC	ROS	9.74	4.51	2.16	1.26	24.7%	11.4%	13.2%	.240	1.41	.300	68.7%			4.49
2025	ATC DC	ROS	9.53	4.28	2.22	1.10	24.3%	10.9%	13.4%	.235	1.37	.295	69.5%			4.15
2025	THE BAT	ROS	11.46	4.13	2.78	1.19	29.9%	10.8%	19.1%	.213	1.26	.285	72.9%			3.77
2025	OOPSY	ROS	10.56	4.85	2.18	1.21	26.6%	12.2%	14.4%	.208	1.33	.263	76.2%			4.20
Total	- - -	MLB	12.17	3.42	3.56	0.76	35.2%	9.9%	25.3%	.138	0.85	.196	78.1%	65	69	2.92

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
2019	BOS	A-	12.68	4.91	2.58	0.82	30.7%	11.9%	18.8%	.279	1.64	.415	74.6%	122	108	3.81
2021	BOS	CPX	11.57	1.93	6.00	1.29	32.1%	5.4%	26.8%	.231	1.07	.313	75.8%	60	85	4.29
2021	BOS	A	8.86	3.24	2.73	0.43	21.1%	7.7%	13.4%	.299	1.63	.381	43.2%	142	83	3.86
2021	BOS	MiLB	9.54	2.91	3.28	0.65	23.6%	7.2%	16.4%	.284	1.49	.367	48.5%	121	83	3.97
2022	BOS	A+	10.83	4.30	2.52	0.89	27.2%	10.8%	16.4%	.251	1.43	.342	62.4%	127	98	4.37
2022	BOS	AA	5.91	3.38	1.75	0.84	18.9%	10.8%	8.1%	.094	0.66	.083	100.0%	19	109	4.73
2022	BOS	MiLB	10.09	4.16	2.42	0.88	26.2%	10.8%	15.4%	.232	1.32	.307	65.5%	111	100	4.42
2023	BOS	A	6.00	0.00	2.00	0.00	16.7%	0.0%	16.7%	.250	1.00	.300	100.0%	0	57	2.37
2023	BOS	AA	14.23	8.37	1.70	1.47	33.3%	19.6%	13.7%	.209	1.70	.313	75.1%	114	128	5.44
2023	BOS	MiLB	13.70	7.83	1.75	1.37	32.4%	18.5%	13.9%	.212	1.65	.312	76.2%	107	123	5.24
2023	BOS	ST	9.00	0.00	1.00	0.00	33.3%	0.0%	33.3%	.000	0.00	.000	100.0%	0	37	1.81
2024	BOS	AA	14.49	1.98	7.33	0.00	40.7%	5.6%	35.2%	.176	0.88	.310	83.3%	0	21	0.82
2024	BOS	AAA	11.31	6.20	1.82	1.09	27.0%	14.8%	12.2%	.217	1.50	.293	64.4%	113	112	5.43
2024	LAA	AAA	9.39	1.17	8.00	1.17	28.6%	3.6%	25.0%	.185	0.78	.222	87.0%	44	74	3.83
2024	---	MiLB	11.93	4.11	2.90	0.78	31.0%	10.7%	20.3%	.200	1.20	.286	70.4%	68	78	3.80
2024	BOS	ST	12.00	15.00	0.80	0.00	21.1%	26.3%	-5.3%	.429	3.67	.600	45.5%	370	130	6.07
2024	LAA	MLB	9.53	3.18	3.00	0.00	28.1%	9.4%	18.8%	.125	0.76	.184	73.3%	52	58	2.46
2024			8.60	3.12	2.76	1.14	22.6%	8.2%	14.4%	.241	1.27	.289	72.1%			4.11
2025	LAA	ST	8.00	4.00	2.00	0.00	22.2%	11.1%	11.1%	.188	1.11	.250	100.0%	0	69	3.29
2025	FGDC	PROJ	8.84	4.39	2.01	1.23	22.3%	11.1%	11.2%	.241	1.41	.290	70.9%			4.70
2025	Steamer	PROJ	8.80	4.26	2.07	1.33	22.3%	10.8%	11.5%	.242	1.40	.288	72.4%			4.74
2025	ZiPS	PROJ	8.89	4.52	1.96	1.13	22.3%	11.3%	10.9%	.239	1.42	.291	69.4%			4.66
2025	ZiPS DC	PROJ	8.89	4.52	1.96	1.13	22.3%	11.3%	10.9%	.239	1.42	.291	69.4%			4.66
2025	ATC	PROJ	9.53	4.28	2.22	1.10	24.3%	10.9%	13.4%	.235	1.37	.295	69.5%			4.29
2025	THE BAT	PROJ	10.10	3.94	2.56	1.18	26.1%	10.2%	15.9%	.224	1.29	.283	71.2%			4.14
2025	OOPSY	PROJ	10.03	4.91	2.04	1.12	25.3%	12.4%	12.9%	.213	1.36	.267	75.4%			4.34
2025	LAA	MLB	18.90	4.05	4.67	2.70	51.9%	11.1%	40.7%	.167	1.05	.250	95.2%	100	98	4.08
2025			8.53	3.48	2.45	1.09	22.4%	9.1%	13.2%	.235	1.28	.283	72.4%			4.17
2025	FGDC	ROS	9.63	4.47	2.15	1.25	24.5%	11.4%	13.1%	.236	1.39	.293	71.0%			4.43
2025	Steamer	ROS	9.51	4.43	2.15	1.24	24.3%	11.3%	13.0%	.232	1.37	.286	73.4%			4.37
2025	ZiPS	ROS	9.74	4.51	2.16	1.26	24.7%	11.4%	13.2%	.240	1.41	.300	68.7%			4.49
2025	ZiPS DC	ROS	9.74	4.51	2.16	1.26	24.7%	11.4%	13.2%	.240	1.41	.300	68.7%			4.49
2025	ATC DC	ROS	9.53	4.28	2.22	1.10	24.3%	10.9%	13.4%	.235	1.37	.295	69.5%			4.15
2025	THE BAT	ROS	11.46	4.13	2.78	1.19	29.9%	10.8%	19.1%	.213	1.26	.285	72.9%			3.77
2025	OOPSY	ROS	10.56	4.85	2.18	1.21	26.6%	12.2%	14.4%	.208	1.33	.263	76.2%			4.20
Total	- - -	MLB	12.17	3.42	3.56	0.76	35.2%	9.9%	25.3%	.138	0.85	.196	78.1%	65	69	2.92

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
2024	BOS	AAA	61	84.4	107.4	16.7			18	29.5%	5.47
2024	LAA	AAA	19	89.8	105.6	18.6			8	42.1%	2.35
2024	LAA	MLB	38	87.0	109.8	17.4	0	0.0%	10	26.3%	2.12	1.67
2025	LAA	MLB	10	91.5	109.4	23.3	1	10.0%	5	50.0%	4.05	1.65
Total	- - -	MLB	48	87.9	109.8	18.6	1	2.1%	15	31.3%	2.66

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
2024	BOS	AAA	61	84.4	107.4	16.7			18	29.5%	5.47
2024	LAA	AAA	19	89.8	105.6	18.6			8	42.1%	2.35
2024	LAA	MLB	38	87.0	109.8	17.4	0	0.0%	10	26.3%	2.12	1.67
2025	LAA	MLB	10	91.5	109.4	23.3	1	10.0%	5	50.0%	4.05	1.65
Total	- - -	MLB	48	87.9	109.8	18.6	1	2.1%	15	31.3%	2.66

Ryan Zeferjahn

Stats

Dashboard

Standard

Advanced

Statcast

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