Ryan Zeferjahn

Los Angeles Angels

Age: 27

Bats/Throws: R/R

6'5" / 209

DOB: 2/28/1998

(27 years, 3 months, 10 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	3	1	1	25	0	21.2	12.88	4.98	1.66	.367	78.2%	40.4%	23.5%	97.7	4.98	3.70	4.42	3.14	0.0
2025	FGDC	ROS	27	2	2	2	39	0	39.0	9.57	4.50	1.21	.294	71.1%				4.49		4.44		0.0
2025	Steamer	ROS	27	2	2	2	39	0	39.0	9.43	4.40	1.19	.290	73.5%				4.21		4.35		0.0
2025	ZiPS	ROS	27	1	2		27	1	35.0	9.70	4.59	1.24	.299	68.7%				4.78		4.53		0.0
2025	ZiPS DC	ROS	27	2	3	2	39	0	39.0	9.70	4.59	1.24	.299	68.7%				4.78		4.53		-0.1
2025	ATC DC	ROS	27	2	2	2	39	0	39.0	10.30	4.16	1.16	.296	71.2%				4.25		4.06		0.2
2025	THE BAT	ROS	27	1	1	2	39	0	25.0	10.64	4.15	1.19	.293	71.5%				4.27		4.01		0.1
2025	OOPSY	ROS	27	2	2	2	39	0	39.0	10.80	4.84	1.13	.267	76.6%				3.67		4.08		0.2
Total	- - -	MLB		3	1	1	37	0	38.2	11.41	4.19	0.93	.287	76.6%	40.0%	11.1%	97.6	3.72		3.56	3.59	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	3	1	1	25	0	21.2	12.88	4.98	1.66	.367	78.2%	40.4%	23.5%	97.7	4.98	3.70	4.42	3.14	0.0
2025	FGDC	ROS	27	2	2	2	39	0	39.0	9.57	4.50	1.21	.294	71.1%				4.49		4.44		0.0
2025	Steamer	ROS	27	2	2	2	39	0	39.0	9.43	4.40	1.19	.290	73.5%				4.21		4.35		0.0
2025	ZiPS	ROS	27	1	2		27	1	35.0	9.70	4.59	1.24	.299	68.7%				4.78		4.53		0.0
2025	ZiPS DC	ROS	27	2	3	2	39	0	39.0	9.70	4.59	1.24	.299	68.7%				4.78		4.53		-0.1
2025	ATC DC	ROS	27	2	2	2	39	0	39.0	10.30	4.16	1.16	.296	71.2%				4.25		4.06		0.2
2025	THE BAT	ROS	27	1	1	2	39	0	25.0	10.64	4.15	1.19	.293	71.5%				4.27		4.01		0.1
2025	OOPSY	ROS	27	2	2	2	39	0	39.0	10.80	4.84	1.13	.267	76.6%				3.67		4.08		0.2
Total	- - -	MLB		3	1	1	37	0	38.2	11.41	4.19	0.93	.287	76.6%	40.0%	11.1%	97.6	3.72		3.56	3.59	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	3	1	4.98	25	0	0	0	0	1	9	2	21.2	97	22	12	12	4	12	0	1	1	0	31
2025	FGDC	ROS	2	2	4.49	39	0	0			2	8		39.0	172	35	21	20	5	20		3			42
2025	Steamer	ROS	2	2	4.21	39	0	0	0	0	2	8		39.0	171	35	20	18	5	19		2			41
2025	ZiPS	ROS	1	2	4.78	27	1							35.0	155	32	20	19	5	18		3			38
2025	ZiPS DC	ROS	2	3	4.78	39	0	0			2	8		39.0	173	36	23	21	5	20		4			42
2025	ATC DC	ROS	2	2	4.25	39	0	0			2	8		39.0	169	34	20	19	5	18		3			45
2025	THE BAT	ROS	1	1	4.27	39	0				2	8		25.0	109	22	13	12	3	12	1	2			30
2025	OOPSY	ROS	2	2	3.67	39	0	0			2	8		39.0	173	31	18	16	5	21		2			47
Total	- - -	MLB	3	1	3.72	37	0	0	0	0	1	9	2	38.2	161	29	16	16	4	18	1	3	1	0	49

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	3	1	4.98	25	0	0	0	0	1	9	2	21.2	97	22	12	12	4	12	0	1	1	0	31
2025	FGDC	ROS	2	2	4.49	39	0	0			2	8		39.0	172	35	21	20	5	20		3			42
2025	Steamer	ROS	2	2	4.21	39	0	0	0	0	2	8		39.0	171	35	20	18	5	19		2			41
2025	ZiPS	ROS	1	2	4.78	27	1							35.0	155	32	20	19	5	18		3			38
2025	ZiPS DC	ROS	2	3	4.78	39	0	0			2	8		39.0	173	36	23	21	5	20		4			42
2025	ATC DC	ROS	2	2	4.25	39	0	0			2	8		39.0	169	34	20	19	5	18		3			45
2025	THE BAT	ROS	1	1	4.27	39	0				2	8		25.0	109	22	13	12	3	12	1	2			30
2025	OOPSY	ROS	2	2	3.67	39	0	0			2	8		39.0	173	31	18	16	5	21		2			47
Total	- - -	MLB	3	1	3.72	37	0	0	0	0	1	9	2	38.2	161	29	16	16	4	18	1	3	1	0	49

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	12.88	4.98	2.58	1.66	32.0%	12.4%	19.6%	.262	1.57	.367	78.2%	123	106	4.42
2025			8.39	3.29	2.55	1.09	22.0%	8.6%	13.3%	.241	1.29	.289	72.8%			4.14
2025	FGDC	ROS	9.57	4.50	2.13	1.21	24.3%	11.4%	12.9%	.237	1.40	.294	71.1%			4.44
2025	Steamer	ROS	9.43	4.40	2.14	1.19	24.1%	11.3%	12.8%	.234	1.38	.290	73.5%			4.35
2025	ZiPS	ROS	9.70	4.59	2.11	1.24	24.5%	11.6%	12.9%	.240	1.42	.299	68.7%			4.53
2025	ZiPS DC	ROS	9.70	4.59	2.11	1.24	24.5%	11.6%	12.9%	.240	1.42	.299	68.7%			4.53
2025	ATC DC	ROS	10.30	4.16	2.48	1.16	26.5%	10.7%	15.8%	.231	1.33	.296	71.2%			4.06
2025	THE BAT	ROS	10.64	4.15	2.56	1.19	27.4%	10.7%	16.7%	.226	1.32	.293	71.5%			4.01
2025	OOPSY	ROS	10.80	4.84	2.23	1.13	27.2%	12.2%	15.0%	.207	1.33	.267	76.6%			4.08
Total	- - -	MLB	11.41	4.19	2.72	0.93	30.4%	11.2%	19.3%	.207	1.22	.287	76.6%	92	85	3.56

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	12.88	4.98	2.58	1.66	32.0%	12.4%	19.6%	.262	1.57	.367	78.2%	123	106	4.42
2025			8.39	3.29	2.55	1.09	22.0%	8.6%	13.3%	.241	1.29	.289	72.8%			4.14
2025	FGDC	ROS	9.57	4.50	2.13	1.21	24.3%	11.4%	12.9%	.237	1.40	.294	71.1%			4.44
2025	Steamer	ROS	9.43	4.40	2.14	1.19	24.1%	11.3%	12.8%	.234	1.38	.290	73.5%			4.35
2025	ZiPS	ROS	9.70	4.59	2.11	1.24	24.5%	11.6%	12.9%	.240	1.42	.299	68.7%			4.53
2025	ZiPS DC	ROS	9.70	4.59	2.11	1.24	24.5%	11.6%	12.9%	.240	1.42	.299	68.7%			4.53
2025	ATC DC	ROS	10.30	4.16	2.48	1.16	26.5%	10.7%	15.8%	.231	1.33	.296	71.2%			4.06
2025	THE BAT	ROS	10.64	4.15	2.56	1.19	27.4%	10.7%	16.7%	.226	1.32	.293	71.5%			4.01
2025	OOPSY	ROS	10.80	4.84	2.23	1.13	27.2%	12.2%	15.0%	.207	1.33	.267	76.6%			4.08
Total	- - -	MLB	11.41	4.19	2.72	0.93	30.4%	11.2%	19.3%	.207	1.22	.287	76.6%	92	85	3.56

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	53	91.8	114.9	10.6	3	5.7%	26	49.1%	4.98	3.70
Total	- - -	MLB	91	89.8	114.9	13.5	3	3.3%	36	39.6%	3.72

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	53	91.8	114.9	10.6	3	5.7%	26	49.1%	4.98	3.70
Total	- - -	MLB	91	89.8	114.9	13.5	3	3.3%	36	39.6%	3.72

Ryan Zeferjahn

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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