JB Middleton - Minor League, College Baseball Statistics

High Level

Years

2023-2026

Proper Name

Jonathan Bailey Middleton

Positions

P (5)

Height / Weight

6-0 / 178

Bats / Throws

Right / Right

Birthdate

November 24,2003 Age: 22.344

Place

Yazoo City, Mississippi Flags

High School

Benton (Benton,MS)

Colleges

University of Southern Mississippi (Hattiesburg,MS)

Drafted/Signed

2025-2-45-Colorado Rockies

Signing Bonus

$ 2,071,900

MLBAM ID

822477

Actions

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JB Middleton [Jonathan Bailey Middleton] is currently active in the minor leagues in the Colorado Rockies organization with the Fresno Grizzlies (California League - A). He last played in the Minor Leagues for the Fresno Grizzlies (Colorado Rockies affiliate) in the California League (A). Ranked by MLB Pipeline as the Colorado Rockies No. 7 MLB prospect in 2026 pre-season Prospect rankings. Middleton was born on November 24th, 2003 in Yazoo City, Mississippi and is currently 22 years old. He attended high school in Benton, Mississippi where he played for the Benton Raiders. He played 3 years of NCAA Division I College Baseball for the University of Southern Mississippi Golden Eagles [Sun Belt Conference]. Participated in the D1 NCAA Tournament in 2023 [Super Regionals], 2024 [Regionals] and 2025 [Regionals]. He was drafted and signed in the 2nd round ...

Show Full Career Summary

(45th overall) of the 2025 Major League Baseball Amateur Draft by the Colorado Rockies, receiving a $2,071,900 signing bonus. His most frequent teammates throughout his career, based on statistics listed below were Carson Paetow, Matthew Russo, Colby Allen, Nick Monistere and Kros Sivley. Middleton has played 1 minor league season with the Colorado Rockies. He played collegiate summer league baseball in the Cape Cod League for the Hyannis Harbor Hawks.

Awards: Named 3rd Team College All-American in 2025. Named Sun Belt Conference All-Conference Team in 2025.

Career Notes: Golden Spikes award nominee in 2025.

Prospect Rankings

CSV

Glossary

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year

source

type

team

rank

view rankings

2026

Baseball America

Team

Colorado Rockies

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2026

MLB Pipeline

Team

Colorado Rockies

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2 record(s)

Scouting Grades

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1 record(s)

Pitching Statistics

CSV

Glossary

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MLB Stats

Minor League Stats

College Stats

Yearly Summary

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year	team name	league	level	mlb	#	age	tbc+	w	l	era	g	gs	cg	sho	gr	gf	sv	ip	h	r	er	hr	bb	so	wp	bk	hb	whip	h9	hr9	bb9	so9	ra9	so/bb
2023	Southern Miss	SBC	NCAA-1	Fr	18	19		0	3	8.68	8	1	0	0	7	0	0	9.1	10	10	9	3	4	11	1	0	3	1.50	9.64	2.89	3.86	10.61	9.64	2.75
2024	Southern Miss	SBC	NCAA-1	So	18	20	116	2	1	4.34	24	2	0	0	22	0	2	37.1	30	21	18	3	25	45	5	0	3	1.47	7.23	0.72	6.03	10.85	5.06	1.80
2025	Southern Miss	SBC	NCAA-1	Jr	18	21	158	8	1	2.07	14	14	1	0	0	0	0	91.1	53	22	21	5	23	104	4	1	9	0.83	5.22	0.49	2.27	10.25	2.17	4.52
2026	Fresno Grizzlies	Cal2	A	COL	10	22	85	0	0	4.95	5	5	0	0	0	0	0	20.0	21	11	11	3	13	18	0	0	3	1.70	9.45	1.35	5.85	8.10	4.95	1.38
Tot:	Minors (1 yrs)		Minors					0	0	4.95	5	5	0	0	0	0	0	20.0	21	11	11	3	13	18	0	0	3	1.70	9.45	1.35	5.85	8.10	4.95	1.38
Tot:	A (1 yrs)		A					0	0	4.95	5	5	0	0	0	0	0	20.0	21	11	11	3	13	18	0	0	3	1.70	9.45	1.35	5.85	8.10	4.95	1.38
Tot:	College (3 yrs)		College					10	5	3.13	46	17	1	0	29	0	2	138.0	93	53	48	11	52	160	10	1	15	1.05	6.07	0.72	3.39	10.43	3.46	3.08
Avg:	Minors - 162 Inning avg		Minors					🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	162	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒
Avg:	College - 162 Inning avg		College					🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	162	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒	🔒

Other Pitching Statistics

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Glossary

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year	team name	league	category	age	w	l	era	g	gs	cg	sho	gr	gf	sv	ip	h	r	er	hr	bb	so	wp	bk	hb	whip	h9	hr9	bb9	so9	ra9	so/bb
2023	Hyannis Harbor Hawks	Cape Cod League	College Summer	19	1	0	3.24	6	0	0	0	6	0	1	8.1	3	3	3	0	5	15	2	0	0	0.96	3.24	0.00	5.40	16.20	3.24	3.00
Tot:	CollegeSummer (1 Yrs)		CollegeSummer		1	0	3.24	6	0	0	0	0	6	1	8.1	3	3	3	0	5	15	2	0	0	0.96	3.24	0.00	5.40	16.20	3.24	3.00

Talent Ratings

About Talent Ratings

Strikeouts	Walks	Hittable	SO/BB	vs Power	Durability	Team Success
87	26	88	49	88	92	.000

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