Mason Barnett

Mason Barnett

25-Year-Old PitcherRP
Sacramento Athletics
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.
Secures two-inning save
PSacramento Athletics
June 9, 2026
Barnett struck out four over two perfect innings to earn the save in Tuesday's 7-5 win over the Brewers.
Analysis
Barnett wasn't utilized in Monday's slugfest, leaving him fresh to pitch Tuesday while the bullpen was short. He delivered a tidy outing, collecting his six outs on 31 pitches (20 strikes) for his first career save. Barnett has allowed just two hits with a 12:4 K:BB across eight innings over three relief appearances this season. The Athletics have a hole in the rotation currently, but it may not be an issue until next week. Barnett came up through the minor leagues as a starter, which could make him a candidate for a spot start at some point later in the year. For now, he can be considered a long reliever.
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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
35
Last 10 Games
34
Last 5 Games
27
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
 
 
-5%
BAA vs RHP
2026
 
 
-83%
BAA vs RHP
2025
 
 
-23%
BAA vs LHP
2024
No Stats
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .246 63 10 6 14 3 0 1
Since 2024vs Right .234 89 23 10 18 5 0 3
2026vs Left .250 21 5 1 5 2 0 1
2026vs Right .043 27 10 4 1 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
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2024
 
 
-15%
ERA on Road
2026
 
 
-100%
ERA on Road
2025
 
 
-19%
ERA on Road
2024
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 4.91 1.32 22.0 1 1 1 6.5 2.5 1.2
Since 2024Away 4.15 1.46 13.0 1 0 0 11.8 6.9 0.7
2026Home 1.04 0.92 8.2 1 0 1 8.3 3.1 1.0
2026Away 0.00 0.75 4.0 0 0 0 15.8 4.5 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
More Splits View More Split Stats
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
3.00
 
K/9
10.7
 
BB/9
3.6
 
HR/9
0.7
 
Fastball
95.1 mph
 
ERA
0.71
 
WHIP
0.87
 
BABIP
.194
 
GB/FB
0.43
 
Left On Base
104.2%
 
Exit Velocity
79.3 mph
 
Barrels/BBE
1.6%
 
Spin Rate
2531 rpm
 
Balls Hit 95+ MPH
9.5%
 
Swinging Strike
10.9%
 
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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Recent RotoWire Articles Featuring Mason Barnett See More
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More Fantasy News
Stellar in relief Friday
PSacramento Athletics
June 6, 2026
Barnett allowed a hit and two walks while striking out seven over four scoreless innings of relief in Friday's 5-1 loss to the Astros.
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Recalled from Triple-A
PSacramento Athletics
June 2, 2026
The Athletics recalled Barnett from Triple-A Las Vegas on Tuesday.
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Back in Vegas
PSacramento Athletics
May 15, 2026
The Athletics optioned Barnett to Triple-A Las Vegas on Friday.
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Recalled from Las Vegas
PSacramento Athletics
May 13, 2026
The Athletics recalled Barnett from Triple-A Las Vegas on Wednesday.
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Sent back to minors
PSacramento Athletics
April 20, 2026
The Athletics optioned Barnett to Triple-A Las Vegas on Monday.
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