2025 Stats
W-L
0-0
ERA
1.64
WHIP
0.73
K
22
SV
9
Rest-of-Season Projections
2025 Fantasy Outlook
Miller made six starts in 2023, but durability issues raised questions about his role entering the 2024 campaign. However, an outstanding spring of one-inning appearances carved a logical path for the 25-year-old to become the Athletics closer. The right-hander tallied the A's first save of the season and never looked back, averaging 100.9 mph on his 4-seamer while blowing away opposing hitters at a league-leading 41.8 percent clip. Miller also led qualified relievers with a remarkable 33.3 K-BB percentage. Perhaps most importantly, the hurler remained healthy for the most part, only missing a few weeks on the IL with a fractured pinkie on his non-throwing hand. The injury risk remains, but Athletics general manager David Forst recently indicated that the team is not considering moving Miller back into a starting role. His upside warrants a pick as a top-7 closer for 2025 drafts. Read Past Outlooks
Secures ninth save
Miller issued a walk in a scoreless inning and earned a save against Texas on Monday. He struck out one batter.
ANALYSIS
Miller put Marcus Semien on base with a four-pitch walk to begin the ninth inning but avoided any danger and closed out the 2-1 win. Miller has now converted all nine of his save chances this season. He's delivered two straight scoreless appearances after coughing up two runs against the White Sox on Friday. Miller owns a terrific 22:2 K:BB with a 1.64 ERA through 11 innings.
Miller put Marcus Semien on base with a four-pitch walk to begin the ninth inning but avoided any danger and closed out the 2-1 win. Miller has now converted all nine of his save chances this season. He's delivered two straight scoreless appearances after coughing up two runs against the White Sox on Friday. Miller owns a terrific 22:2 K:BB with a 1.64 ERA through 11 innings.
Pitching Stats
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2025
2024
2023
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
14
Last 10 Games
15
Last 5 Games
14
How many pitches does Mason Miller generally throw?
1-10
11-20
21-30
31-40
41-50
51-60
61-70
71-80
81-90
91-100
101-110
111-120
121+
What part of the game does Mason Miller generally pitch?
1st
2nd
3rd
4th
5th
6th
7th
8th
9th
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2023
-8%
BAA vs LHP
2025
-74%
BAA vs RHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .165 | 72 | 20 | 27 | 5 | |||
| Since 2023vs Right | .180 | 92 | 19 | 39 | 4 | |||
| 2025vs Left | .308 | 5 | 1 | 4 | 1 | |||
| 2025vs Right | .080 | 17 | 1 | 2 | 0 | |||
| 2024vs Left | .146 | 51 | 9 | 15 | 3 | |||
| 2024vs Right | .172 | 53 | 12 | 21 | 3 | |||
| 2023vs Left | .167 | 16 | 10 | 8 | 1 | |||
| 2023vs Right | .229 | 22 | 6 | 16 | 1 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2023
-17%
ERA at Home
2025
-100%
ERA on Road
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 2.53 | 0.84 | 53.1 | 13.2 | 3.0 | ||||
| Since 2023Away | 3.05 | 1.07 | 56.0 | 13.8 | 3.4 | ||||
| 2025Home | 3.60 | 0.80 | 5.0 | 18.0 | 0.0 | ||||
| 2025Away | 0.00 | 0.67 | 6.0 | 18.0 | 3.0 | ||||
| 2024Home | 2.25 | 0.72 | 32.0 | 14.1 | 2.5 | ||||
| 2024Away | 2.73 | 1.03 | 33.0 | 14.7 | 3.3 | ||||
| 2023Home | 2.76 | 1.10 | 16.1 | 9.9 | 5.0 | ||||
| 2023Away | 4.76 | 1.29 | 17.0 | 10.6 | 3.7 | ||||
| More Splits→ | View More Split Stats | ||||||||
Stat Review
How does Mason Miller compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. 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, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
11.00K/9
18.0BB/9
1.6HR/9
0.8Fastball
100.8 mphERA
1.64WHIP
0.73BABIP
.357GB/FB
1.80Left On Base
90.9%Exit Velocity
82.3 mphBarrels/BBE
5.9%Spin Rate
2471 rpmBalls Hit 95+ MPH
26.5%Swinging Strike
25.0%Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Past Fantasy Outlooks
2024
2023
The three most fantasy-relevant aspects of Miller's profile are his off-the-charts injury risk, his truly elite stuff and his team context: great home park, horrific run support. Of pitchers who will enter spring training healthy, it would be hard to find anyone more likely to get injured during spring training than Miller. A shoulder injury limited him to 30.2 innings (including the Arizona Fall League) as a 23-year-old in 2022 - his first full pro season. A UCL sprain limited him to 52.2 innings in 2023, and he has only topped 60 innings twice dating back to college, logging 67.2 innings in 2019 and 98.2 innings in 2021, in part because of a Type 1 diabetes diagnosis. The fact he can touch 102 mph with his fastball only adds to the injury risk. He threw five-plus innings in three of his 17 appearances last year, and he didn't throw more than three innings in any of his 11 post-injury appearances. As scary as his durability track record is, his stuff is equally scary for opposing batters. In addition to his 80-grade fastball, he throws a mid-90s cutter, an upper-80s slider and a low-90s changeup. There are reports that the 25-year-old flamethrower could be used as a high-leverage reliever this year due to his durability issues, but this team is arguably the worst in baseball for pitcher wins and saves.
More Fantasy News
Escapes with eighth save
Miller recorded his eighth save of the season in Friday's 6-5 win over the White Sox, giving up two runs on two hits in the ninth inning. He struck out one.
ANALYSIS
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Nails down seventh save
Miller collected the save in Wednesday's win over the Rangers after allowing one hit in a scoreless ninth inning, striking out three.
ANALYSIS
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Locks down sixth save
Miller struck out two and didn't allow a baserunner in a scoreless ninth inning Saturday to earn the save against the Brewers.
ANALYSIS
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Mows down ChiSox for save
Miller struck out all three batters he faced in a perfect inning to earn a save against the White Sox on Wednesday.
ANALYSIS
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Logs fourth save
Miller earned the save in Friday's 3-1 win over the Mets. He allowed one hit while striking out one batter in a scoreless ninth inning.
ANALYSIS
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Latest Fantasy Rumors
No movement on extension
During an appearance on Foul Territory on Friday, Miller said the A's have not reached out regarding a contract extension.
ANALYSIS
The Athletics have uncharacteristically spent some significant money this offseason, including extensions for Brent Rooker and Lawrence Butler, but it doesn't appear that Miller will be joining that group anytime soon. The right-hander will have his first year of arbitration eligibility in 2026, so he's still multiple years away from potentially hitting free agency.
The Athletics have uncharacteristically spent some significant money this offseason, including extensions for Brent Rooker and Lawrence Butler, but it doesn't appear that Miller will be joining that group anytime soon. The right-hander will have his first year of arbitration eligibility in 2026, so he's still multiple years away from potentially hitting free agency.