Seth Johnson

Seth Johnson

27-Year-Old PitcherRP
Philadelphia Phillies AAA
2026 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
Rest-of-Season Projections
W-L
ERA
WHIP
K
SV
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2026 Fantasy Outlook
There was no outlook written for Seth Johnson in 2026. Check out the latest news below for more on his current fantasy value.
RANKS
Rest of Season
From Preseason
#362
ADP
League AAA
Bats R
Throws R
40 Man Yes
Height 6'1"
Weight 200
DOB 9/19/1998
Drafted 2019
Signed a one-year contract with the Phillies in March of 2026.
Optioned to minors
PPhiladelphia Phillies  AAA
March 19, 2026
The Phillies optioned Johnson to Triple-A Lehigh Valley on Thursday.
Analysis
Johnson gave up two runs on five hits with five strikeouts and six walks over seven Grapefruit League appearances and won't begin the season in the majors. He made 10 appearances for the Phillies last year and had a 4.26 ERA, 1.18 WHIP and 17:4 K:BB across 12.2 innings.
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Pitching Stats
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2025 MLB Game Log
2025
2024
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Scoring
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Left/Right Pitching Splits
Since 2024
 
 
-28%
BAA vs LHP
2026
No Stats
2025
 
 
-27%
BAA vs LHP
2024
 
 
-18%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .240 32 10 6 6 1 0 2
Since 2024vs Right .333 40 7 1 13 4 0 2
2026vs Left 0 0 0 0 0 0 0 0
2026vs Right 0 0 0 0 0 0 0 0
2025vs Left .182 26 10 4 4 1 0 2
2025vs Right .250 28 7 0 7 2 0 1
2024vs Left .667 6 0 2 2 0 0 0
2024vs Right .545 12 0 1 6 2 0 1
Home/Away Pitching Splits
Since 2024
 
 
-82%
ERA at Home
2026
No Stats
2025
 
 
-60%
ERA at Home
2024
 
 
-100%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 2.57 0.86 7.0 1 1 0 15.4 2.6 2.6
Since 2024Away 14.63 2.50 8.0 0 1 0 5.6 5.6 2.3
2026Home 0 0 0 0 0 0 0 0 0
2026Away 0 0 0 0 0 0 0 0 0
2025Home 2.57 0.86 7.0 1 1 0 15.4 2.6 2.6
2025Away 6.35 1.59 5.2 0 0 0 7.9 3.2 1.6
2024Home 0 0 0 0 0 0 0 0 0
2024Away 34.71 4.71 2.1 0 1 0 0.0 11.6 3.9
Minor League Left/Right Pitching Splits (AAA)
Since 2024
 
 
-31%
BAA vs RHP
2026
 
 
-100%
BAA vs LHP
2025
 
 
-40%
BAA vs RHP
2024
 
 
-4%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .277 206 42 31 46 10 0 3
Since 2024vs Right .192 166 45 18 28 6 0 3
2026vs Left .000 1 1 0 0 0 0 0
2026vs Right .333 3 0 0 1 1 0 0
2025vs Left .314 150 31 22 38 8 0 1
2025vs Right .189 121 36 13 20 5 0 3
2024vs Left .182 55 10 9 8 2 0 2
2024vs Right .189 42 9 5 7 0 0 0
Stat Review
How does Seth Johnson 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
4.25
 
K/9
12.1
 
BB/9
2.8
 
HR/9
2.1
 
Fastball
97.2 mph
 
ERA
4.26
 
WHIP
1.18
 
BABIP
.299
 
GB/FB
1.78
 
Left On Base
64.8%
 
Exit Velocity
86.3 mph
 
Barrels/BBE
3.9%
 
Spin Rate
2368 rpm
 
Balls Hit 95+ MPH
32.9%
 
Swinging Strike
13.6%
 
Prospect Rankings History
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Defensive Stats
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Stats Vs Today's Lineup
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Phillies Depth Chart
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Past Fantasy Outlooks
2024
2021
He returned last season from Tommy John surgery and threw just 10.1 innings. He converted from shortstop to starting pitcher in college before the Rays selected him 40th overall in 2019. The Orioles were willing to stash him on the 40-man roster while he recovered from Tommy John surgery. He has a plus fastball, plus slider, but this will be a big year for him to show he has the command, health and third pitch to remain a starting pitcher.
Johnson is following a similar path to Dodgers top pitching prospect Josiah Gray. Both were amateur shortstops who moved to the mound in effort to advance their baseball careers. Johnson, whom the Rays selected with the No. 40 overall pick in 2019, had a low-to-mid-90s fastball with late life when he was drafted, and he was touching 99 mph during the fall instructional league. Like Gray, he seems to be making exponential improvements as he gets further removed from being a position player. Johnson's slider is a second plus pitch and he has shown more feel for a changeup than the typical conversion project. The 6-foot-1 righty has an athletic delivery and projects for at least average command and control. He should spend his age-22 season at High-A with a chance to see Double-A if he impresses.
More Fantasy News
Sent back to minors
PPhiladelphia Phillies  AAA
August 5, 2025
The Phillies optioned Johnson to Triple-A Lehigh Valley on Tuesday.
Analysis
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Called up Friday
PPhiladelphia Phillies  AAA
July 4, 2025
The Phillies recalled Johnson from Triple-A Lehigh Valley on Friday, Matt Gelb of The Athletic reports.
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Sent back to Lehigh Valley
PPhiladelphia Phillies  AAA
July 2, 2025
The Phillies optioned Johnson to Triple-A Lehigh Valley following Wednesday's doubleheader against the Padres.
Analysis
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Promoted for doubleheader
PPhiladelphia Phillies  AAA
July 2, 2025
The Phillies recalled Johnson from Triple-A Lehigh Valley on Wednesday.
Analysis
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Sent back down
PPhiladelphia Phillies  AAA
June 6, 2025
The Phillies optioned Johnson to Triple-A Lehigh Valley on Friday.
Analysis
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