Pitching

Jacob Mayers

Boston Red Sox (A+)

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Age: 22

Bats/Throws: R/R

6'5" / 205

DOB: 6/10/2004

(22 years, 1 month, 29 days)

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In-Season ProjectionsMinor LeaguesCollege

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	divider	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	divider	vFA vFA - Fourseam Fastball velocity (Pitch Info)	divider	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
2023	NICH	NCAA	19	9	1	0	15	15	75.2		12.49	6.90	0.71	.266	87.2%						2.02		4.52
2024	NICH	NCAA	20	5	1	0	18	16	70.2		13.50	9.68	1.40	.230	78.4%						4.58		6.51
2025	LSU	NCAA	21	2	0	0	17	0	15.0		15.60	12.00	0.00	.182	67.9%						4.80		5.02
2026	BOS	A	22	2	2	1	15	8	46.1		12.43	8.16	0.58	.264	69.8%	48.9%	12.5%				4.27		4.67	4.59
2026	BOS	A+	22	0	0	0	2	2	4.2		11.57	11.57	0.00	.333	70.0%	50.0%	0.0%				5.79		4.91	6.98
2026	BOS	MiLB	22	2	2	1	17	10	51.0		12.35	8.47	0.53	.272	69.8%	49.0%	10.3%				4.41		4.69	4.81
2026	Steamer	ROS	22	0	0	0	0	0	1.0		6.57	6.65	1.27	.304	68.9%						5.92		5.84		0.0
2026	OOPSY	ROS	22	0	0	0	1	1	2.9		7.54	6.15	1.16	.301	67.8%						5.42		5.37		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	divider	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	divider	vFA vFA - Fourseam Fastball velocity (Pitch Info)	divider	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
2023	NICH	NCAA	19	9	1	0	15	15	75.2		12.49	6.90	0.71	.266	87.2%						2.02		4.52
2024	NICH	NCAA	20	5	1	0	18	16	70.2		13.50	9.68	1.40	.230	78.4%						4.58		6.51
2025	LSU	NCAA	21	2	0	0	17	0	15.0		15.60	12.00	0.00	.182	67.9%						4.80		5.02
2026	BOS	A	22	2	2	1	15	8	46.1		12.43	8.16	0.58	.264	69.8%	48.9%	12.5%				4.27		4.67	4.59
2026	BOS	A+	22	0	0	0	2	2	4.2		11.57	11.57	0.00	.333	70.0%	50.0%	0.0%				5.79		4.91	6.98
2026	BOS	MiLB	22	2	2	1	17	10	51.0		12.35	8.47	0.53	.272	69.8%	49.0%	10.3%				4.41		4.69	4.81
2026	Steamer	ROS	22	0	0	0	0	0	1.0		6.57	6.65	1.27	.304	68.9%						5.92		5.84		0.0
2026	OOPSY	ROS	22	0	0	0	1	1	2.9		7.54	6.15	1.16	.301	67.8%						5.42		5.37		0.0

In-Season ProjectionsMinor LeaguesCollege

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
2023	NICH	NCAA	9	1	2.02	15	15		0	0	0			75.2	317	44	21	17	6	58		5	3	0	105
2024	NICH	NCAA	5	1	4.58	18	16		0	0	0			70.2	320	39	38	36	11	76		5	7	0	106
2025	LSU	NCAA	2	0	4.80	17	0		0	0	0			15.0	72	4	9	8	0	20		4	2	0	26
2026	BOS	A	2	2	4.27	15	8		0	0	1	1	0	46.1	204	27	25	22	3	42	0	4	5	0	64
2026	BOS	A+	0	0	5.79	2	2		0	0	0	0	0	4.2	24	4	3	3	0	6	0	0	0	1	6
2026	BOS	MiLB	2	2	4.41	17	10		0	0	1	1	0	51.0	228	31	28	25	3	48	0	4	5	1	70
2026	Steamer	ROS	0	0	5.92	0	0	0	0	0	0	0		1.0	5	1	1	1	0	1		0			1
2026	OOPSY	ROS	0	0	5.42	1	1	0			0	0		2.9	13	3	2	2	0	2	0	0			2

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
2023	NICH	NCAA	9	1	2.02	15	15		0	0	0			75.2	317	44	21	17	6	58		5	3	0	105
2024	NICH	NCAA	5	1	4.58	18	16		0	0	0			70.2	320	39	38	36	11	76		5	7	0	106
2025	LSU	NCAA	2	0	4.80	17	0		0	0	0			15.0	72	4	9	8	0	20		4	2	0	26
2026	BOS	A	2	2	4.27	15	8		0	0	1	1	0	46.1	204	27	25	22	3	42	0	4	5	0	64
2026	BOS	A+	0	0	5.79	2	2		0	0	0	0	0	4.2	24	4	3	3	0	6	0	0	0	1	6
2026	BOS	MiLB	2	2	4.41	17	10		0	0	1	1	0	51.0	228	31	28	25	3	48	0	4	5	1	70
2026	Steamer	ROS	0	0	5.92	0	0	0	0	0	0	0		1.0	5	1	1	1	0	1		0			1
2026	OOPSY	ROS	0	0	5.42	1	1	0			0	0		2.9	13	3	2	2	0	2	0	0			2

In-Season ProjectionsMinor LeaguesAveragesCollege

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)	divider	K% K% - Strikeout Percentage (SO/TBF)	BB% BB% - Walk Percentage (BB/TBF)	K-BB% K-BB% - The difference between strikeout percentage and walk percentage	divider	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	divider	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	divider	FIP FIP - Fielder Independent Pitching on an ERA scale
2023	NICH	NCAA	12.49	6.90	1.81	0.71		33.1%	18.3%	14.8%		.173	1.35	.266	87.2%					4.52
2024	NICH	NCAA	13.50	9.68	1.39	1.40		33.1%	23.8%	9.4%		.163	1.63	.230	78.4%					6.51
2025	LSU	NCAA	15.60	12.00	1.30	0.00		36.1%	27.8%	8.3%		.083	1.60	.182	67.9%					5.02
2026	BOS	A	12.43	8.16	1.52	0.58		31.4%	20.6%	10.8%		.171	1.49	.264	69.8%		87	99		4.67
2026	BOS	A+	11.57	11.57	1.00	0.00		25.0%	25.0%	0.0%		.222	2.14	.333	70.0%		110	95		4.91
2026	BOS	MiLB	12.35	8.47	1.46	0.53		30.7%	21.1%	9.6%		.176	1.55	.272	69.8%		89	99		4.69
2026	Steamer	ROS	6.57	6.65	0.99	1.27		15.4%	15.6%	-0.2%		.273	1.82	.304	68.9%					5.84
2026	OOPSY	ROS	7.54	6.15	1.23	1.16		18.5%	15.1%	3.4%		.258	1.66	.301	67.8%					5.37

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)	divider	K% K% - Strikeout Percentage (SO/TBF)	BB% BB% - Walk Percentage (BB/TBF)	K-BB% K-BB% - The difference between strikeout percentage and walk percentage	divider	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	divider	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	divider	FIP FIP - Fielder Independent Pitching on an ERA scale
2023	NICH	NCAA	12.49	6.90	1.81	0.71		33.1%	18.3%	14.8%		.173	1.35	.266	87.2%					4.52
2024	NICH	NCAA	13.50	9.68	1.39	1.40		33.1%	23.8%	9.4%		.163	1.63	.230	78.4%					6.51
2025	LSU	NCAA	15.60	12.00	1.30	0.00		36.1%	27.8%	8.3%		.083	1.60	.182	67.9%					5.02
2026	BOS	A	12.43	8.16	1.52	0.58		31.4%	20.6%	10.8%		.171	1.49	.264	69.8%		87	99		4.67
2026	BOS	A+	11.57	11.57	1.00	0.00		25.0%	25.0%	0.0%		.222	2.14	.333	70.0%		110	95		4.91
2026	BOS	MiLB	12.35	8.47	1.46	0.53		30.7%	21.1%	9.6%		.176	1.55	.272	69.8%		89	99		4.69
2026	Steamer	ROS	6.57	6.65	0.99	1.27		15.4%	15.6%	-0.2%		.273	1.82	.304	68.9%					5.84
2026	OOPSY	ROS	7.54	6.15	1.23	1.16		18.5%	15.1%	3.4%		.258	1.66	.301	67.8%					5.37