Seth Johnson

Seth Johnson

27-Year-Old PitcherRP
Philadelphia Phillies AAA
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
Signed a one-year contract with the Phillies in March of 2026.
Optioned to Triple-A
PPhiladelphia Phillies  AAA
April 21, 2026
The Phillies optioned Johnson to Triple-A Lehigh Valley on Tuesday.
Analysis
Johnson made two scoreless appearances during his most recent stint in the majors. However, he pitched each of the previous two days, so the Phillies will replace him with a fresh bullpen arm.
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Pitching Stats
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2026 MLB Game Log
2026
2025
2024
2026 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
30
Last 10 Games
30
Last 5 Games
30
How many pitches does Seth Johnson 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 Seth Johnson 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
 
 
-3%
BAA vs LHP
2026
 
 
-64%
BAA vs RHP
2025
 
 
-27%
BAA vs LHP
2024
 
 
-18%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .290 38 11 6 9 2 0 2
Since 2024vs Right .300 55 10 4 15 4 0 2
2026vs Left .500 6 1 0 3 1 0 0
2026vs Right .182 15 3 3 2 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
 
 
-64%
ERA at Home
2026
 
 
-100%
ERA on Road
2025
 
 
-60%
ERA at Home
2024
 
 
-100%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 4.66 1.24 9.2 1 1 0 13.0 3.7 1.9
Since 2024Away 13.00 2.44 9.0 0 1 0 7.0 6.0 2.0
2026Home 10.13 2.25 2.2 0 0 0 6.8 6.8 0.0
2026Away 0.00 2.00 1.0 0 0 0 18.0 9.0 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
 
 
-32%
BAA vs RHP
2026
 
 
-30%
BAA vs RHP
2025
 
 
-40%
BAA vs RHP
2024
 
 
-4%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .274 230 51 34 51 11 0 4
Since 2024vs Right .186 189 56 20 31 7 0 3
2026vs Left .238 25 10 3 5 1 0 1
2026vs Right .167 26 11 2 4 2 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
1.33
 
K/9
9.8
 
BB/9
7.4
 
HR/9
0.0
 
Fastball
97.2 mph
 
ERA
7.36
 
WHIP
2.18
 
BABIP
.441
 
GB/FB
1.25
 
Left On Base
37.5%
 
Exit Velocity
79.9 mph
 
Barrels/BBE
6.3%
 
Spin Rate
2457 rpm
 
Balls Hit 95+ MPH
15.6%
 
Swinging Strike
7.8%
 
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 Seth Johnson See More
Recent RotoWire Articles Featuring Seth Johnson See More
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
Recalled from Triple-A
PPhiladelphia Phillies  AAA
April 18, 2026
The Phillies recalled Johnson from Triple-A Lehigh Valley on Saturday.
Analysis
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Sent back down
PPhiladelphia Phillies  AAA
April 14, 2026
The Phillies optioned Johnson to Triple-A Lehigh Valley on Tuesday.
Analysis
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Getting look with big club
PPhiladelphia Phillies  AAA
April 13, 2026
The Phillies recalled Johnson from Triple-A Lehigh Valley on Monday.
Analysis
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Optioned to minors
PPhiladelphia Phillies  AAA
March 19, 2026
The Phillies optioned Johnson to Triple-A Lehigh Valley on Thursday.
Analysis
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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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