Carson Seymour

Carson Seymour

26-Year-Old PitcherRP
San Francisco Giants AAA
2025 Fantasy Outlook
A big 6-foot-6 righty whose groundball rates have typically been above 50 percent thanks to a plus sinker and plus slider, Seymour may profile best as a reliever long term due to his lack of a quality third pitch. He logged a 4.82 ERA, 1.57 WHIP and 132 strikeouts in 134.1 innings across 29 appearances for Triple-A Sacramento, where he will likely return to start 2025. Seymour was added to the 40-man roster this offseason to protect him from the Rule 5 draft, and he could work as a spot starter or long reliever for the big club. Read Past Outlooks
Signed a one-year contract with the Giants in March of 2025.
Sent back to minors
PSan Francisco Giants  AAA
July 2, 2025
The Giants optioned Seymour to Triple-A Sacramento on Wednesday, Justice delos Santos of The San Jose Mercury News reports.
Analysis
Seymour tossed a scoreless inning during his MLB debut Sunday but followed it up by giving up four runs (two earned) over three frames Tuesday. He's now heading back to Sacramento in favor of Mason Black.
Read More News
Pitching Stats
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2025 MLB Game Log
2025
2025 MLB Game Log
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Scoring
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Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
35
Last 10 Games
35
Last 5 Games
35
How many pitches does Carson Seymour 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 Carson Seymour 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 2023
 
 
-60%
BAA vs LHP
2025
 
 
-60%
BAA vs LHP
2024
No Stats
2023
No Stats
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .222 9 1 0 2 0 0 0
Since 2023vs Right .556 9 1 0 5 0 0 3
2025vs Left .222 9 1 0 2 0 0 0
2025vs Right .556 9 1 0 5 0 0 3
2024vs Left 0 0 0 0 0 0 0 0
2024vs Right 0 0 0 0 0 0 0 0
2023vs Left 0 0 0 0 0 0 0 0
2023vs Right 0 0 0 0 0 0 0 0
Home/Away Pitching Splits
Since 2023
 
 
-100%
ERA at Home
2025
 
 
-100%
ERA at Home
2024
No Stats
2023
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2023Home 0 0 0 0 0 0 0 0 0
Since 2023Away 4.50 1.75 4.0 0 0 0 4.5 0.0 6.8
2025Home 0 0 0 0 0 0 0 0 0
2025Away 4.50 1.75 4.0 0 0 0 4.5 0.0 6.8
2024Home 0 0 0 0 0 0 0 0 0
2024Away 0 0 0 0 0 0 0 0 0
2023Home 0 0 0 0 0 0 0 0 0
2023Away 0 0 0 0 0 0 0 0 0
Minor League Left/Right Pitching Splits (AAA)
Since 2023
 
 
-11%
BAA vs RHP
2025
 
 
-47%
BAA vs RHP
2024
 
 
-5%
BAA vs LHP
2023
No Stats
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .285 406 92 51 99 25 1 15
Since 2023vs Right .253 515 123 46 115 19 2 11
2025vs Left .296 171 40 23 42 15 1 4
2025vs Right .157 153 43 14 21 2 0 2
2024vs Left .278 235 52 28 57 10 0 11
2024vs Right .293 362 80 32 94 17 2 9
2023vs Left 0 0 0 0 0 0 0 0
2023vs Right 0 0 0 0 0 0 0 0
Stat Review
How does Carson Seymour 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
0.00
 
K/9
4.5
 
BB/9
0.0
 
HR/9
6.8
 
Fastball
95.6 mph
 
ERA
4.50
 
WHIP
1.75
 
BABIP
.301
 
GB/FB
3.00
 
Left On Base
107.1%
 
Exit Velocity
0.0 mph
 
Barrels/BBE
0.0%
 
Spin Rate
0 rpm
 
Balls Hit 95+ MPH
0.0%
 
Swinging Strike
7.1%
 
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 Carson Seymour See More
Recent RotoWire Articles Featuring Carson Seymour See More
More Fantasy News
Scoreless outing in MLB debut
PSan Francisco Giants  AAA
June 30, 2025
Seymour threw a scoreless eighth inning in Sunday's 5-2 loss to the White Sox, allowing two hits.
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Set for first MLB stint
PSan Francisco Giants  AAA
June 27, 2025
The Giants recalled Seymour from Triple-A Sacramento on Friday, Alex Pavlovic of NBC Sports Bay Area reports.
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Shipped out to minor-league camp
PSan Francisco Giants  AAA
March 9, 2025
The Giants optioned Seymour to Triple-A Sacramento on Sunday, Shayna Rubin of the San Francisco Chronicle reports.
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Protected from Rule 5 draft
PSan Francisco Giants  AAA
November 19, 2024
The Giants added Seymour to the 40-man roster Tuesday.
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Included in return for Ruf
PSan Francisco Giants  AAA
August 2, 2022
Seymour was traded from the Mets to the Giants on Tuesday along with J.D. Davis, Thomas Szapucki and Nick Zwack in exchange for Darin Ruf, Joel Sherman of the New York Post reports.
Analysis
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