Miles Mastrobuoni#1

Tacoma Rainiers·BBRef

RSFree agentFLBFree agent

Pos: P, 2B, 3B

B/T: L / R

Born: Oct 31, 1995 (30)

Height: 5' 9"

Weight: 185 lbs

Owned: 0.0%

From: San Ramon, CA

Drafted: 2016

Miles Mastrobuoni

#1

Tacoma Rainiers BBRef

RSFree agentFLBFree agent

Position: P, 2B, 3B

Bats/Throws: L / R

Born: Oct 31, 1995 (30)

Height: 5' 9"

Weight: 185 lbs

Owned: 0.04%

From: San Ramon, CA

Drafted: 2016

G	AB	H	HR	RBI	R	SB	AVG	OBP	SLG	OPS	K%	BB%
13	26	5	0	1	3	0	.192	.241	.192	.433	33.3%	6.7%

Mastrobuoni cleared waivers Tuesday and was outrighted to Triple-A Tacoma.

Jul 21Rotowire

Mastrobuoni was dropped from the active and 40-man rosters Saturday to make room for Julio Rodriguez's (leg) return from the IL, but the former will officially remain in the Mariners' system after passing through waivers unclaimed. Mastrobuoni, 30, has slashed just .172/.310/.293 through 71 plate appearances at Tacoma and is likely to spend the vast majority of what's left in the season at Triple-A.

The Mariners designated Mastrobuoni for assignment Saturday.

Jul 18Rotowire

After having his contract selected by Seattle on July 3, Mastrobuoni made only three at-bats for the big-league club before being DFA'd on Saturday. This marks the second time the 30-year-old has been designated for assignment by Seattle this campaign. With Julio Rodriguez coming back from the 7-day injured list, the Mariners needed to make room for him on the active roster.

The Mariners selected Mastrobuoni's contract from Triple-A Tacoma on Friday.

Jul 3Rotowire

Mastrobuoni was DFA'd by the Mariners in mid-June but is back with the big club to provide depth in the outfield after Julio Rodriguez (concussion) was placed on the 7-day injured list. Mastrobuoni has spent most of the 2026 season in Triple-A, where he has a .603 OPS with five steals, one home run and three RBI over 71 plate appearances.

Mastrobuoni cleared waivers Thursday and was sent outright to Triple-A Tacoma.

Jun 25Rotowire

Mastrobuoni was DFA'd by Seattle after going 5-for-23 with 10 strikeouts in eight games with the big club, and he'll officially remain in the organization after passing through waivers unclaimed. The 30-year-old has posted just a .649 OPS at Triple-A this season and will likely spend the vast majority of what's left of the season in the minors.

The Mariners designated Mastrobuoni for assignment Friday.

Jun 19Rotowire

Mastrobuoni went 5-for-23 with an RBI and three runs scored during his eight-game stint with the Mariners, but he'll now lose his place on the 26-man and 40-man rosters in favor of Weston Wilson. Mastrobuoni owns just a .567 OPS across 474 plate appearances in his MLB career, but his defensive versatility could draw some attention on the waiver wire.

Poor

Below Avg

Average

Above Avg

Elite

Batting

xwOBA

.184

xBA

.145

xSLG

.201

Avg Exit Velo

90.1 mph

Barrel %

0.0%

Hard-Hit %

22.2%

LA Sweet-Spot %

18

27.8%

Bat Speed

68.0 mph

Squared-Up %

34.2%

Chase %

27.5%

Whiff %

20.9%

K %

33.3%

BB %

6.7%

Fielding

Range (OAA)

0.00

Arm Strength

Running

Sprint Speed

52

27.5 ft/s

Year	G	PA	AB	H	2B	3B	HR	RBI	SB	BB	K	AVG	OBP	SLG	OPS
2022TB	8	17	16	3	0	0	0	0	1	1	6	.188	.235	.188	.423
2023CHC	61	149	133	32	5	0	1	5	13	13	32	.241	.308	.301	.609
2024CHC	50	106	98	19	3	0	0	4	2	7	17	.194	.245	.224	.469
2025SEA	76	175	152	38	4	0	1	12	6	17	29	.250	.324	.296	.620
2026SEA	13	30	26	5	0	0	0	1	0	2	10	.192	.241	.192	.433
Career	208	477	425	97	12	0	2	22	22	40	94	0.228	0.293	0.271	0.564
Year	G	PA	AB	H	2B	3B	HR	RBI	SB	BB	K	AVG	OBP	SLG	OPS

Miles Mastrobuoni#1

Miles Mastrobuoni

2026 Season

Player News

Mastrobuoni cleared waivers Tuesday and was outrighted to Triple-A Tacoma.

The Mariners designated Mastrobuoni for assignment Saturday.

The Mariners selected Mastrobuoni's contract from Triple-A Tacoma on Friday.

Mastrobuoni cleared waivers Thursday and was sent outright to Triple-A Tacoma.

The Mariners designated Mastrobuoni for assignment Friday.

Percentile Rankings

Year by Year

Batting Splits

Statcast

Exit Velocity

Batted Ball

Sprint Speed

Defense

Expected Stats

Spray Chart

Splits

vs Pitchers: Left-Handed

vs Pitchers: Right-Handed