Carson Seymour

Carson Seymour

26-Year-Old PitcherRP
San Francisco Giants
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.
Fans three in bulk relief
PSan Francisco Giants
August 20, 2025
Seymour surrendered one earned run on three hits and one walk while striking out three across three innings in Tuesday's 5-1 loss to the Padres.
Analysis
Seymour worked in long relief once again, logging three innings for the fourth time in nine appearances this season. The right-hander threw 33 of his 54 pitches for strikes and recorded at least three strikeouts for the third time. He owns a 3.92 ERA, 1.40 WHIP and 16:8 K:BB, allowing six home runs in 20.2 innings.
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Pitching Stats
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2025 MLB Game Log
2025
2025 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
40
Last 10 Games
40
Last 5 Games
40
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
 
 
-33%
BAA vs RHP
2025
 
 
-33%
BAA vs RHP
2024
No Stats
2023
No Stats
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .324 37 4 3 11 3 0 2
Since 2023vs Right .217 52 12 5 10 1 0 4
2025vs Left .324 37 4 3 11 3 0 2
2025vs Right .217 52 12 5 10 1 0 4
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
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2023
 
 
-9%
ERA at Home
2025
 
 
-9%
ERA at Home
2024
No Stats
2023
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2023Home 3.72 1.45 9.2 0 1 0 4.7 4.7 1.9
Since 2023Away 4.09 1.36 11.0 0 0 0 9.0 2.5 3.3
2025Home 3.72 1.45 9.2 0 1 0 4.7 4.7 1.9
2025Away 4.09 1.36 11.0 0 0 0 9.0 2.5 3.3
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
More Splits View More Split Stats
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
2.00
 
K/9
7.0
 
BB/9
3.5
 
HR/9
2.6
 
Fastball
96.2 mph
 
ERA
3.92
 
WHIP
1.40
 
BABIP
.262
 
GB/FB
2.20
 
Left On Base
87.4%
 
Exit Velocity
85.5 mph
 
Barrels/BBE
11.9%
 
Spin Rate
2201 rpm
 
Balls Hit 95+ MPH
34.5%
 
Swinging Strike
9.8%
 
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
Works long relief Saturday
PSan Francisco Giants
August 10, 2025
Seymour allowed one earned run on four hits while striking out one over three innings in Saturday's 4-2 loss to the Nationals.
Analysis
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Earns first hold Monday
PSan Francisco Giants
August 5, 2025
Seymour picked up a hold in Monday's 5-4 loss to the Pirates, allowing two earned runs on one home run and one walk while striking out two across two innings.
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Could work in bulk relief Sunday
PSan Francisco Giants
July 27, 2025
Seymour is likely lined up to pitch at least a couple of innings in Sunday's game against the Mets after opening pitcher Matt Gage exits the contest, Alex Pavlovic of NBC Sports Bay Area reports.
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Back in majors
PSan Francisco Giants
July 22, 2025
The Giants recalled Seymour from Triple-A Sacramento on Tuesday.
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Sent back to minors
PSan Francisco Giants
July 2, 2025
The Giants optioned Seymour to Triple-A Sacramento on Wednesday, Justice delos Santos of The San Jose Mercury News reports.
Analysis
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