Mason Barnett #63

Athletics

P
B/T: R/R
6' 0"/218
Age: 25

Mason McLendon Barnett
Status: Active
Born: 11/07/2000 in Kennesaw, GA
Draft: 2022, Kansas City Royals, Round: 3, Overall Pick: 87
College: Auburn
MLB Debut: 8/30/2025

2026 Stats

G	W-L	ERA	IP	SO	WHIP
9	3-1	4.64	42.2	41	1.52

G	W-L	ERA	IP	SO	WHIP
9	3-1	4.64	42.2	41	1.52

2026 Stats

G	W-L	ERA	IP	SO	WHIP
9	1-0	1.17	15.1	19	0.98

G	W-L	ERA	IP	SO	WHIP
9	1-0	1.17	15.1	19	0.98

MiLB Career Stats

G	W-L	ERA	IP	SO	WHIP
87	25-18	4.46	417.1	475	1.35

G	W-L	ERA	IP	SO	WHIP
87	25-18	4.46	417.1	475	1.35

MLB Career Stats

G	W-L	ERA	IP	SO	WHIP
14	2-1	4.54	37.2	37	1.38

G	W-L	ERA	IP	SO	WHIP
14	2-1	4.54	37.2	37	1.38

Year	W	L	ERA	G	GS	SV	IP	SO	WHIP
2026 MiLB Stats	3	1	4.64	9	9	0	42.2	41	1.52
2026 MLB Stats	1	0	1.17	9	0	2	15.1	19	0.98
MiLB Career Stats	25	18	4.46	87	81	0	417.1	475	1.35
MLB Career Stats	2	1	4.54	14	5	2	37.2	37	1.38

Year	W	L	ERA	G	GS	SV	IP	SO	WHIP
2026 MiLB Stats	3	1	4.64	9	9	0	42.2	41	1.52
2026 MLB Stats	1	0	1.17	9	0	2	15.1	19	0.98
MiLB Career Stats	25	18	4.46	87	81	0	417.1	475	1.35
MLB Career Stats	2	1	4.54	14	5	2	37.2	37	1.38

Next ATH Game: 6-29 vs LAD

Splits

Duration	W	L	ERA	G	GS	SV	IP	H	ER	BB	SO	WHIP
Last 7 Games	1	0	1.93	7	0	2	9.1	6	2	3	11	0.96
Last 15 Games	1	0	1.17	9	0	2	15.1	8	2	7	19	0.98
Last 30 Games	-	-	---	-	-	-	---	-	-	-	-	---

Duration	W	L	ERA	G	GS	SV	IP	H	ER	BB	SO	WHIP
Last 7 Games	1	0	1.93	7	0	2	9.1	6	2	3	11	0.96
Last 15 Games	1	0	1.17	9	0	2	15.1	8	2	7	19	0.98
Last 30 Games	-	-	---	-	-	-	---	-	-	-	-	---

Last 3 Games	SV	IP	H	ER	BB	SO
6/27 @ LAA	0	0.2	1	0	0	0
6/25 @ SF	1	1.0	0	0	0	1
6/23 @ SF	0	1.0	1	1	2	3

Last 3 Games	SV	IP	H	ER	BB	SO
6/27 @ LAA	0	0.2	1	0	0	0
6/25 @ SF	1	1.0	0	0	0	1
6/23 @ SF	0	1.0	1	1	2	3

2026 : RP (9)

More Mason Barnett

4/14/2026 at 9:24 PM 4/14/2026 at 9:24 PM

Tommy Troy strikes out on a foul tip and Anderdson Rojas caught stealing 2nd, catcher Brian Serven to second baseman Michael Stefanic to catcher Brian Serven.

8/31/2025 at 11:13 AM 8/31/2025 at 11:13 AM

Mason Barnett K's seven

Latest Transactions

Team	Date	Transaction
	June 2, 2026	Athletics recalled RHP Mason Barnett from Las Vegas Aviators.
	May 15, 2026	Athletics optioned RHP Mason Barnett to Las Vegas Aviators.
	May 13, 2026	Athletics recalled RHP Mason Barnett from Las Vegas Aviators.
	April 20, 2026	Athletics optioned RHP Mason Barnett to Las Vegas Aviators.
	April 18, 2026	Athletics recalled RHP Mason Barnett from Las Vegas Aviators.
	March 9, 2026	Athletics optioned RHP Mason Barnett to Las Vegas Aviators.
	March 5, 2026	RHP Mason Barnett assigned to Athletics Prospects.
	August 26, 2025	Athletics selected the contract of RHP Mason Barnett from Las Vegas Aviators.
	March 26, 2025	RHP Mason Barnett assigned to Las Vegas Aviators from Midland RockHounds.
	January 17, 2025	Athletics invited non-roster RHP Mason Barnett to spring training.
	August 2, 2024	Midland RockHounds activated RHP Mason Barnett.
	July 30, 2024	RHP Mason Barnett assigned to Midland RockHounds.
	July 30, 2024	Oakland Athletics traded RHP Lucas Erceg to Kansas City Royals for RHP Will Klein, RHP Mason Barnett and OF Jared Dickey.
	March 7, 2024	Kansas City Royals Prospects activated RHP Mason Barnett.
	January 10, 2024	Kansas City Royals invited non-roster RHP Mason Barnett to spring training.
	August 2, 2023	RHP Mason Barnett assigned to Northwest Arkansas Naturals from Quad Cities River Bandits.
	April 5, 2023	RHP Mason Barnett assigned to Quad Cities River Bandits from Columbia Fireflies.
	August 31, 2022	RHP Mason Barnett assigned to Columbia Fireflies from ACL Royals.
	August 22, 2022	RHP Mason Barnett assigned to ACL Royals from Royals Organization.
	August 16, 2022	RHP Mason Barnett assigned to Royals Organization.
	July 24, 2022	Kansas City Royals signed RHP Mason Barnett.
	June 10, 2022	College Workout activated RHP Mason Barnett.
	June 10, 2022	RHP Mason Barnett and assigned to College Workout.
	February 4, 2022	RHP Mason Barnett and assigned to Auburn Tigers.