2026 Stats
AVG
.217
HR
0
RBI
1
R
3
SB
0
Rest-of-Season Projections
2026 Fantasy Outlook
Mastrobuoni is a replacement level utility player who is out of minor-league options. The Mariners lack established options at third base and second base, but they have young players who have more ceiling than the 30-year-old Mastrobuoni and a comparable floor. When Mastrobuoni is in the lineup, the one category he assists in is steals, having stolen 13 bases in 61 games in 2023 and six bases in 76 games in 2025. He has two homers and a .231 average in 195 career games. It's possible he will be designated for assignment if Colt Emerson wins an Opening Day roster spot. Read Past Outlooks
Outrighted to Tacoma
Mastrobuoni cleared waivers Thursday and was sent outright to Triple-A Tacoma.
Analysis
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.
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.
Batting Stats
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2026 MLB Game Log
2026
2025
2024
2023
2022
Minor League Game Log
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Batting Order Slot Breakdown
#1
#2
#3
#4
#5
#6
#7
#8
#9
3
1
3
#1
#2
#3
#4
#5
#6
#7
#8
#9
1
Left/Right Batting Splits
Since 2024
+18%
OPS vs LHP
2026
+374%
OPS vs LHP
| OPS | PA | HR | RBI | AVG | |
|---|---|---|---|---|---|
| Since 2024vs Left | .639 | 37 | 0 | 2 | .265 |
| Since 2024vs Right | .543 | 271 | 1 | 15 | .222 |
| 2026vs Left | 2.000 | 2 | 0 | 0 | 1.000 |
| 2026vs Right | .422 | 25 | 0 | 1 | .182 |
| 2025vs Left | .804 | 19 | 0 | 1 | .294 |
| 2025vs Right | .596 | 156 | 1 | 11 | .244 |
| 2024vs Left | .375 | 16 | 0 | 1 | .188 |
| 2024vs Right | .487 | 90 | 0 | 3 | .195 |
Home/Away Batting Splits
Since 2024
+36%
OPS on Road
2026
+61%
OPS at Home
| OPS | PA | HR | RBI | AVG | |
|---|---|---|---|---|---|
| Since 2024Home | .470 | 151 | 0 | 6 | .196 |
| Since 2024Away | .639 | 157 | 1 | 11 | .259 |
| 2026Home | .661 | 9 | 0 | 0 | .286 |
| 2026Away | .410 | 18 | 0 | 1 | .188 |
| 2025Home | .542 | 93 | 0 | 4 | .229 |
| 2025Away | .710 | 82 | 1 | 8 | .275 |
| 2024Home | .310 | 49 | 0 | 2 | .125 |
| 2024Away | .613 | 57 | 0 | 2 | .260 |
Minor League Left/Right Batting Splits (AAA)
Since 2024
+73%
OPS vs RHP
2026
+104%
OPS vs RHP
| OPS | PA | HR | RBI | AVG | |
|---|---|---|---|---|---|
| Since 2024vs Left | .475 | 143 | 1 | 16 | .176 |
| Since 2024vs Right | .823 | 290 | 5 | 26 | .275 |
| 2026vs Left | .353 | 17 | 0 | 1 | .118 |
| 2026vs Right | .720 | 30 | 1 | 1 | .261 |
| 2025vs Left | .467 | 44 | 0 | 7 | .265 |
| 2025vs Right | .657 | 98 | 1 | 11 | .309 |
| 2024vs Left | .379 | 82 | 1 | 8 | .150 |
| 2024vs Right | .592 | 162 | 3 | 14 | .257 |
Stat Review
How does Miles Mastrobuoni compare to other hitters?
This section compares his stats with all batting seasons from the previous three seasons (minimum 400 plate appearances)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.
* Exit Velocity and Barrels/PA % are benchmarked against 2019 data (min 400 PA) and Hard Hit Rate is benchmarked against last season's data (min 400 PA). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
* Exit Velocity and Barrels/PA % are benchmarked against 2019 data (min 400 PA) and Hard Hit Rate is benchmarked against last season's data (min 400 PA). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
BB/K
0.20BB Rate
7.4%K Rate
37.0%BABIP
.357ISO
.000AVG
.217OBP
.269SLG
.217OPS
.487wOBA
.224Exit Velocity
0.0 mphHard Hit Rate
20.0%Barrels/PA
0.0%Expected BA
.000Expected SLG
.000Sprint Speed
24.1 ft/secGround Ball %
50.0%Line Drive %
14.3%Fly Ball %
35.7%Advanced Batting Stats
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Additional Stats
Games By Position
Defensive Stats
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Batted Ball Stats
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Stats Vs Upcoming Pitchers
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Past Fantasy Outlooks
2025
2024
2023
Across two seasons in Chicago, Mastrobuoni has turned into a serviceable utility player with limited offensive upside. The left-hand hitting batter appeared in 50 games for the Cubs in 2024 and posted a .194/.245/.224 slash line with no home runs. Mastrobuoni was a bit better in 2023, when he posted a .609 OPS and one long ball across 61 games while also swiping 13 bags in just 14 attempts. The 29-year-old can play pretty much anywhere in the field, and his speed is a useful asset when he's on base. However, he simply doesn't hit or play enough to really move the fantasy needle. Heading into 2025, Mastrobuoni will likely compete for an Opening Day bench spot, but he could also start the year with Triple-A Omaha. Injuries on the MLB roster could open up a larger role, though for now, Mastrobuoni isn't really a viable option.
More Fantasy News
Designated for assignment
The Mariners designated Mastrobuoni for assignment Friday.
Analysis
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Drawing fifth straight start
Mastrobuoni will start at third base and bat seventh in Sunday's game against the Nationals.
Analysis
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Ready for season debut
The Mariners activated Mastrobuoni (calf) from the 60-day injured list Wednesday.
Analysis
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Begins rehab assignment
Mastrobuoni (calf) began a rehab assignment Monday in the rookie-level Arizona Complex League, going 0-for-2 with a 1:1 K:BB.
Analysis
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Moved to 60-day IL
Seattle transferred Mastrobuoni (calf) from the 10-day injured list to the 60-day IL on Monday.
Analysis
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Latest Fantasy Rumors
Could join big-league roster
Mastrobuoni is with the Cubs as a member of the taxi squad Tuesday as Mike Tauchman is banged up with a groin injury, reports Meghan Montemurro of the Chicago Tribune.
Analysis
Mastrobuoni may not be added to the big-league roster but is with the club as depth in case Tauchman is moved to the injured list. Mastrobuoni has a .125/.222/.150 slash line in 45 plate appearances with the Cubs this season and isn't likely to be relevant for fantasy managers even if active.
Mastrobuoni may not be added to the big-league roster but is with the club as depth in case Tauchman is moved to the injured list. Mastrobuoni has a .125/.222/.150 slash line in 45 plate appearances with the Cubs this season and isn't likely to be relevant for fantasy managers even if active.








