Mason Barnett

Mason Barnett

25-Year-Old PitcherRP
Sacramento Athletics AAA
2026 Fantasy Outlook
There was no outlook written for Mason Barnett in 2026. Check out the latest news below for more on his current fantasy value.
Signed a one-year contract with the Athletics in March of 2026.
Sent back to minors
PSacramento Athletics  AAA
April 20, 2026
The Athletics optioned Barnett to Triple-A Las Vegas on Monday.
Analysis
Barnett needed 43 pitches to cover two-plus innings Sunday versus the White Sox in his lone appearance in the majors. Since Barnett would have been unavailable to pitch for a day or two, the Athletics have summoned a fresh bullpen arm to take his roster spot.
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Pitching Stats
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2026 MLB Game Log
2026
2025
2026 MLB Game Log
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2025 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
43
Last 10 Games
43
Last 5 Games
43
How many pitches does Mason Barnett 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+
 
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+
 
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 Barnett generally pitch?
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
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 2024
 
 
-15%
BAA vs LHP
2026
 
 
-100%
BAA vs RHP
2025
 
 
-23%
BAA vs LHP
2024
No Stats
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .250 46 5 6 10 1 0 0
Since 2024vs Right .293 67 14 7 17 5 0 3
2026vs Left .333 4 0 1 1 0 0 0
2026vs Right .000 5 1 1 0 0 0 0
2025vs Left .243 42 5 5 9 1 0 0
2025vs Right .315 62 13 6 17 5 0 3
2024vs Left 0 0 0 0 0 0 0 0
2024vs Right 0 0 0 0 0 0 0 0
Home/Away Pitching Splits
Since 2024
 
 
-7%
ERA on Road
2026
No Stats
2025
 
 
-19%
ERA on Road
2024
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 6.46 1.57 15.1 0 1 0 5.3 2.9 1.2
Since 2024Away 6.00 1.78 9.0 1 0 0 10.0 8.0 1.0
2026Home 0.00 1.50 2.0 0 0 0 4.5 9.0 0.0
2026Away 0 0 0 0 0 0 0 0 0
2025Home 7.43 1.58 13.1 0 1 0 5.4 2.0 1.4
2025Away 6.00 1.78 9.0 1 0 0 10.0 8.0 1.0
2024Home 0 0 0 0 0 0 0 0 0
2024Away 0 0 0 0 0 0 0 0 0
Minor League Left/Right Pitching Splits (AAA)
Since 2024
 
 
-11%
BAA vs RHP
2026
 
 
-55%
BAA vs RHP
2025
 
 
-2%
BAA vs LHP
2024
No Stats
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .270 305 53 33 73 13 2 12
Since 2024vs Right .241 362 103 46 75 17 2 9
2026vs Left .311 55 9 10 14 3 0 3
2026vs Right .141 68 23 4 9 3 0 1
2025vs Left .262 250 44 23 59 10 2 9
2025vs Right .267 294 80 42 66 14 2 8
2024vs Left 0 0 0 0 0 0 0 0
2024vs Right 0 0 0 0 0 0 0 0
Stat Review
How does Mason Barnett 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.
  • K/BB
    Strikeout to walk ratio.
  • K/9
    Average strikeouts per nine innings.
  • BB/9
    Average walks per nine innings.
  • HR/9
    Average home runs allowed per nine innings.
  • Fastball
    Average fastball velocity.
  • ERA
    Earned run average. The average earned runs allowed per nine innings.
  • WHIP
    Walks plus hits per inning pitched.
  • BABIP
    Batting average on balls in play. Measures how many balls in play against a pitcher go for hits.
  • GB/FB
    Groundball to flyball ratio. The higher the number, the more likely a pitcher is to induce groundballs.
  • Left On Base
    The percentage of base runners that a pitcher strands on base over the course of a season.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Barrels/BBE
    The percentage of batted ball events resulting in a Barrel. A Barrel is a batted ball with similar exit velocity and launch angle to past ones that led to a minimum .500 batting average and 1.500 slugging percentage.
  • Spin Rate
    Spin Rate is the rate of spin on a baseball after it is released. It is measured in revolutions per minute (rpm).
  • Balls Hit 95+ MPH
    The percentage of batted balls hit that met or exceeded the 95 MPH threshold.
  • Swinging Strike
    The percentage of pitches that result in a swing and a miss.
K/BB
0.50
 
K/9
4.5
 
BB/9
9.0
 
HR/9
0.0
 
Fastball
95.0 mph
 
ERA
0.00
 
WHIP
1.50
 
BABIP
.177
 
GB/FB
4.00
 
Left On Base
100.0%
 
Exit Velocity
76.6 mph
 
Barrels/BBE
0.0%
 
Spin Rate
2519 rpm
 
Balls Hit 95+ MPH
13.3%
 
Swinging Strike
7.0%
 
Prospect Rankings History
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Defensive Stats
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Stats Vs Today's Lineup
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Recent RotoWire Articles Featuring Mason Barnett See More
Recent RotoWire Articles Featuring Mason Barnett See More
More Fantasy News
Recalled by Athletics
PSacramento Athletics  AAA
April 18, 2026
The Athletics recalled Barnett from Triple-A Las Vegas on Saturday.
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Falls short of Opening Day roster
PSacramento Athletics  AAA
March 9, 2026
The Athletics optioned Barnett to Triple-A Las Vegas on Monday.
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Does fine in last start of season
PSacramento Athletics  AAA
September 26, 2025
Barnett allowed three runs on three hits and two walks while striking out three over 5.2 innings in a no-decision versus the Royals on Friday.
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Another short start Wednesday
PSacramento Athletics  AAA
September 17, 2025
Barnett didn't factor into the decision in Wednesday's loss against the Red Sox, allowing three runs (two earned) on five hits and three walks while striking out two over four innings
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Short outing vs. Boston
PSacramento Athletics  AAA
September 10, 2025
Barnett did not factor into the decision Wednesday against the Red Sox, allowing three runs on seven hits and a walk across 3.2 innings. He struck out four.
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