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Pitching

Aiden Butler

Seattle Mariners (A)

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Age: 21

Bats/Throws: R/R

6'6" / 193

DOB: 9/25/2003

(21 years, 10 months, 21 days)

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Stats

In-Season ProjectionsMinor Leagues

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
2025	SEA	CPX	21	1	0	0	3	0	5.2		19.06	1.59	0.00	.538	25.0%	38.5%	0.0%				9.53		0.79	1.74
2025	SEA	A	21	1	2	0	9	9	42.2		6.33	2.11	1.27	.240	68.2%	41.4%	11.3%				3.80		5.23	4.47
2025	SEA	MiLB	21	2	2	0	12	9	48.1		7.82	2.05	1.12	.268	60.9%	41.1%	10.2%				4.47		4.71	4.15
2025	Steamer	ROS		0	0	0	0	0	1.0		4.92	4.31	1.59	.290	68.9%						5.69		5.87		0.0
2025	OOPSY	ROS	21	0	0	0	1	1	4.0		5.34	3.35	1.54	.274	64.2%						5.36		5.45		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
2025	SEA	CPX	21	1	0	0	3	0	5.2		19.06	1.59	0.00	.538	25.0%	38.5%	0.0%				9.53		0.79	1.74
2025	SEA	A	21	1	2	0	9	9	42.2		6.33	2.11	1.27	.240	68.2%	41.4%	11.3%				3.80		5.23	4.47
2025	SEA	MiLB	21	2	2	0	12	9	48.1		7.82	2.05	1.12	.268	60.9%	41.1%	10.2%				4.47		4.71	4.15
2025	Steamer	ROS		0	0	0	0	0	1.0		4.92	4.31	1.59	.290	68.9%						5.69		5.87		0.0
2025	OOPSY	ROS	21	0	0	0	1	1	4.0		5.34	3.35	1.54	.274	64.2%						5.36		5.45		0.0

In-Season ProjectionsMinor Leagues

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
2025	SEA	CPX	1	0	9.53	3	0		0	0	0	0	0	5.2	26	7	6	6	0	1	0	0	3	0	12
2025	SEA	A	1	2	3.80	9	9		0	0	0	0	0	42.2	176	37	21	18	6	10	0	1	2	0	30
2025	SEA	MiLB	2	2	4.47	12	9		0	0	0	0	0	48.1	202	44	27	24	6	11	0	1	5	0	42
2025	Steamer	ROS	0	0	5.69	0	0	0	0	0	0	0		1.0	5	1	1	1	0	0		0			1
2025	OOPSY	ROS	0	0	5.36	1	1	0			0	0		4.0	17	4	3	2	1	1	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	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
2025	SEA	CPX	1	0	9.53	3	0		0	0	0	0	0	5.2	26	7	6	6	0	1	0	0	3	0	12
2025	SEA	A	1	2	3.80	9	9		0	0	0	0	0	42.2	176	37	21	18	6	10	0	1	2	0	30
2025	SEA	MiLB	2	2	4.47	12	9		0	0	0	0	0	48.1	202	44	27	24	6	11	0	1	5	0	42
2025	Steamer	ROS	0	0	5.69	0	0	0	0	0	0	0		1.0	5	1	1	1	0	0		0			1
2025	OOPSY	ROS	0	0	5.36	1	1	0			0	0		4.0	17	4	3	2	1	1	0	0			2

In-Season ProjectionsMinor LeaguesAverages

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
2025	SEA	CPX	19.06	1.59	12.00	0.00		46.2%	3.8%	42.3%		.280	1.41	.538	25.0%		198	16		0.79
2025	SEA	A	6.33	2.11	3.00	1.27		17.0%	5.7%	11.4%		.224	1.10	.240	68.2%		85	121		5.23
2025	SEA	MiLB	7.82	2.05	3.82	1.12		20.8%	5.4%	15.3%		.232	1.14	.268	60.9%		99	108		4.71
2025	Steamer	ROS	4.92	4.31	1.14	1.59		12.0%	10.5%	1.5%		.282	1.62	.290	68.9%					5.87
2025	OOPSY	ROS	5.34	3.35	1.59	1.54		13.9%	8.7%	5.2%		.264	1.39	.274	64.2%					5.45

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
2025	SEA	CPX	19.06	1.59	12.00	0.00		46.2%	3.8%	42.3%		.280	1.41	.538	25.0%		198	16		0.79
2025	SEA	A	6.33	2.11	3.00	1.27		17.0%	5.7%	11.4%		.224	1.10	.240	68.2%		85	121		5.23
2025	SEA	MiLB	7.82	2.05	3.82	1.12		20.8%	5.4%	15.3%		.232	1.14	.268	60.9%		99	108		4.71
2025	Steamer	ROS	4.92	4.31	1.14	1.59		12.0%	10.5%	1.5%		.282	1.62	.290	68.9%					5.87
2025	OOPSY	ROS	5.34	3.35	1.59	1.54		13.9%	8.7%	5.2%		.264	1.39	.274	64.2%					5.45