2025 Stats
W-L
1-2
ERA
4.04
WHIP
1.07
K
57
SV
19
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
Signed a one-year contract with the Athletics in March of 2025.
Secures save Sunday
Miller tossed a scoreless inning to earn a save against Toronto on Sunday. He allowed one hit and struck out one batter.
Analysis
Miller tossed 13 of 18 pitches for strikes and forced Vladimir Guerrero to ground into a double play to close out the 6-3 win. Miller has converted five straight saves while delivering eight consecutive scoreless frames since his last blown chance June 19. His season ERA fell to 4.04 with a 57:17 K:BB over 35.2 innings. Miller has converted 19 of his 22 save opportunities, including eight of his last nine.
Miller tossed 13 of 18 pitches for strikes and forced Vladimir Guerrero to ground into a double play to close out the 6-3 win. Miller has converted five straight saves while delivering eight consecutive scoreless frames since his last blown chance June 19. His season ERA fell to 4.04 with a 57:17 K:BB over 35.2 innings. Miller has converted 19 of his 22 save opportunities, including eight of his last nine.
Pitching Stats
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2025 MLB Game Log
2025
2024
2023
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
16
Last 10 Games
15
Last 5 Games
17
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
-7%
BAA vs LHP
2025
-30%
BAA vs RHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .167 | 86 | 31 | 33 | 8 | |||
| Since 2023vs Right | .180 | 113 | 23 | 48 | 4 | |||
| 2025vs Left | .213 | 19 | 12 | 10 | 4 | |||
| 2025vs Right | .149 | 38 | 5 | 11 | 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
-28%
ERA at Home
2025
-33%
ERA at Home
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 2.71 | 0.90 | 69.2 | 12.9 | 3.2 | ||||
| Since 2023Away | 3.78 | 1.12 | 64.1 | 13.8 | 4.1 | ||||
| 2025Home | 3.38 | 1.03 | 21.1 | 13.5 | 3.0 | ||||
| 2025Away | 5.02 | 1.12 | 14.1 | 15.7 | 6.3 | ||||
| 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
3.35K/9
14.4BB/9
4.3HR/9
1.0Fastball
101.1 mphERA
4.04WHIP
1.07BABIP
.281GB/FB
0.96Left On Base
64.8%Exit Velocity
80.1 mphBarrels/BBE
5.1%Spin Rate
2485 rpmBalls Hit 95+ MPH
19.7%Swinging Strike
20.7%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
Secures 18th save
Miller walked one and struck out two in a scoreless ninth inning Saturday to record his 18th save of the season in a 4-3 win over the Blue Jays.
Analysis
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Locks down another save
Miller earned the save Tuesday against the Rays, allowing a walk and no hits while striking out two in a scoreless frame.
Analysis
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Earns 16th save
Miller picked up the save Monday, allowing just one hit while striking out one over an inning against the Rays.
Analysis
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Notches 15th save
Miller earned the save in Wednesday's 3-0 win over the Tigers, striking out two in a perfect ninth inning.
Analysis
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Takes blown save Thursday
Miller allowed a run on two hits and struck out one over 1.1 innings, taking a blown save in Thursday's 6-4 extra-inning win over the Astros.
Analysis
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Latest Fantasy Rumors
On Philly's radar
Miller could be a trade target for the Phillies ahead of the deadline, Jim Bowden of The Athletic speculates.
Analysis
The Phillies are determined to land a late-inning reliever before the trade deadline, and Miller is perhaps the most impactful arm they might target in this year's trade market. Even though his numbers in 2025 are far from flashy, as he owns a 5.55 ERA with a 1.27 WHIP across 24.1 innings, Miller is an elite arm and would undoubtedly strengthen the back of the Phillies' bullpen. Landing him won't be easy, though, as the Athletics are likely to ask for a king's ransom in return.
The Phillies are determined to land a late-inning reliever before the trade deadline, and Miller is perhaps the most impactful arm they might target in this year's trade market. Even though his numbers in 2025 are far from flashy, as he owns a 5.55 ERA with a 1.27 WHIP across 24.1 innings, Miller is an elite arm and would undoubtedly strengthen the back of the Phillies' bullpen. Landing him won't be easy, though, as the Athletics are likely to ask for a king's ransom in return.