Carson Seymour

Carson Seymour

27-Year-Old PitcherRP
San Francisco Giants 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
Unlock Our Projections
2026 Fantasy Outlook
There was no outlook written for Carson Seymour 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 6'5"
Weight 250
DOB 12/16/1998
Drafted 6th Rd 2021
Signed a one-year contract with the Giants in March of 2026.
Optioned to Sacramento
PSan Francisco Giants  AAA
March 24, 2026
The Giants optioned Seymour to Triple-A Sacramento on Tuesday, Shayna Rubin of the San Francisco Chronicle reports.
Analysis
Although he finished the Cactus League with a strong 2.92 ERA and 1.05 WHIP over 12.1 innings, Seymour will come up short in the race for a spot in San Francisco's bullpen. The 27-year-old righty may reclaim a middle-relief role with the Giants if he continues to cruise on the mound to begin the Triple-A season.
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Pitching Stats
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2025 MLB Game Log
2025
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Scoring
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Minor League Game Log
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Left/Right Pitching Splits
Since 2024
 
 
-27%
BAA vs RHP
2026
No Stats
2025
 
 
-27%
BAA vs RHP
2024
No Stats
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .304 76 10 6 21 4 0 3
Since 2024vs Right .222 80 16 7 16 1 0 6
2026vs Left 0 0 0 0 0 0 0 0
2026vs Right 0 0 0 0 0 0 0 0
2025vs Left .304 76 10 6 21 4 0 3
2025vs Right .222 80 16 7 16 1 0 6
2024vs Left 0 0 0 0 0 0 0 0
2024vs Right 0 0 0 0 0 0 0 0
Home/Away Pitching Splits
Since 2024
 
 
-48%
ERA on Road
2026
No Stats
2025
 
 
-48%
ERA on Road
2024
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 6.16 1.68 19.0 0 3 0 6.2 4.3 2.4
Since 2024Away 3.18 1.06 17.0 1 0 0 6.9 2.1 2.1
2026Home 0 0 0 0 0 0 0 0 0
2026Away 0 0 0 0 0 0 0 0 0
2025Home 6.16 1.68 19.0 0 3 0 6.2 4.3 2.4
2025Away 3.18 1.06 17.0 1 0 0 6.9 2.1 2.1
2024Home 0 0 0 0 0 0 0 0 0
2024Away 0 0 0 0 0 0 0 0 0
Minor League Left/Right Pitching Splits (AAA)
Since 2024
 
 
-11%
BAA vs RHP
2026
 
 
-100%
BAA vs RHP
2025
 
 
-45%
BAA vs RHP
2024
 
 
-5%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .282 414 97 51 100 25 1 15
Since 2024vs Right .251 525 128 48 116 19 2 12
2026vs Left .250 4 1 0 1 0 0 0
2026vs Right .000 3 2 0 0 0 0 0
2025vs Left .288 175 44 23 42 15 1 4
2025vs Right .158 160 46 16 22 2 0 3
2024vs Left .278 235 52 28 57 10 0 11
2024vs Right .293 362 80 32 94 17 2 9
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
6.5
 
BB/9
3.3
 
HR/9
2.3
 
Fastball
96.4 mph
 
ERA
4.75
 
WHIP
1.39
 
BABIP
.270
 
GB/FB
1.75
 
Left On Base
77.5%
 
Exit Velocity
85.3 mph
 
Barrels/BBE
9.5%
 
Spin Rate
2221 rpm
 
Balls Hit 95+ MPH
29.5%
 
Swinging Strike
8.7%
 
Prospect Rankings History
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Defensive Stats
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Stats Vs Today's Lineup
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Giants Depth Chart
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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.
More Fantasy News
Competing for bullpen spot
PSan Francisco Giants  AAA
March 15, 2026
Seymour has allowed four earned runs on eight hits and three walks while striking out eight across 9.1 innings in four Cactus League outings, including one start.
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Shifts to bullpen
PSan Francisco Giants  AAA
September 16, 2025
Seymour struck out a batter and allowed one earned run on three hits over one inning of relief in Sunday's 10-2 loss to the Dodgers.
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Early exit vs. Arizona
PSan Francisco Giants  AAA
September 10, 2025
Seymour (1-3) took the loss Wednesday against the Diamondbacks, allowing four runs on six hits across 1.1 innings. He struck out one.
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Shows improvement in first win
PSan Francisco Giants  AAA
September 5, 2025
Seymour (1-2) notched the win Friday against the Cardinals, allowing one run on two hits and one walk in five innings. He struck out two.
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Receiving another start
PSan Francisco Giants  AAA
September 5, 2025
Seymour is slated to start Friday's game against the Cardinals in St. Louis.
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