MLB · Player

Mason Olson

#11 P · B/T: R/L · 5' 10", 165 lb · Age 24 · Provo, UT, USA · Buffalo Bisons (Toronto Blue Jays)

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Career Graph

Pitching

Season	Team	W	L	SV	BS	G	GS	IP	IP/G	SO	K/9	BB/9	ERA
Triple-A (AAA)
2026	BUF	1	0	0	0	2	0	6.1	3.2	6	8.5	5.7	2.84
AAA Total		1	0	0	0	2	0	6.1	3.2	6	8.5	5.7	2.84
Double-A (AA)
2026	NH	4	4	0	1	31	8	84.2	2.7	92	9.8	2.6	4.68
AA Total		4	4	0	1	31	8	84.2	2.7	92	9.8	2.6	4.68
High-A (A+)
2026	VAN	0	0	0	0	1	0	3.1	3.3	3	8.1	2.7	2.70
A+ Total		0	0	0	0	1	0	3.1	3.3	3	8.1	2.7	2.70
Single-A (A)
2025	DUN	3	2	0	0	6	2	20.2	3.4	21	9.1	3.5	3.48
A Total		3	2	0	0	6	2	20.2	3.4	21	9.1	3.5	3.48
Rookie (Rk)
2025	F-BLU	2	1	0	0	3	2	15.2	5.2	18	10.3	2.3	1.72
Rk Total		2	1	0	0	3	2	15.2	5.2	18	10.3	2.3	1.72
Minors Total		10	7	0	1	43	12	130.2	3.0	140	9.6	2.8	3.99

Fielding

Season	Team	Pos	G	Inn	PO	A	E	FPCT
Triple-A (AAA)
2026	BUF	P	2	6.1	0	0	0	.000
AAA Total		—	2	6.1	0	0	0	—
Double-A (AA)
2026	NH	P	31	84.2	3	6	0	1.000
AA Total		—	31	84.2	3	6	0	1.000
High-A (A+)
2026	VAN	P	1	3.1	0	0	0	.000
A+ Total		—	1	3.1	0	0	0	—
Single-A (A)
2025	DUN	P	6	20.2	0	3	0	1.000
A Total		—	6	20.2	0	3	0	1.000
Rookie (Rk)
2025	F-BLU	P	3	15.2	1	3	0	1.000
Rk Total		—	3	15.2	1	3	0	1.000
Minors Total		—	43	130.2	4	12	0	1.000

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