Players · S · Pitcher · 2026
Carson Seymour
- Age
- 28
- B/T
- R/R
- Height
- 6' 5"
- Weight
- 264 lb
- Number
- #77
- Born
- December 16, 1998 in Poway, CA, United States
- MLB debut
- June 29, 2025
- Drafted
- 2021, round 6
- College
- Kansas State
- dbWAR
- -1.0 2 season(s)
- IP
- 29.2
- ERA
- 4.85
- FIP
- 6.03
- K/9
- 6.4
- FIP−
- 144 100 = avg
Carson Seymour is a relief pitcher for the San Francisco Giants. In 2026 he struck out 21 batters over 29.2 innings across 23 appearances, going 0-2. His ERA of 4.85 is 16.2% higher than the league average of 4.18 — 19th of 25 on his team, and 388th of 538 among MLB pitchers with 20+ innings. Stripping out defence, his 6.03 FIP suggests that his ERA had some help behind him. He missed bats on 22.7% of swings (10.6% of every pitch he threw), walked 11.9% of the batters he faced and struck out 15.7%. His -0.5 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.
League context
Percentile among qualified pitchers, 2026.
WAR by season
Pitching
Standard and advanced, by season.
Platoon splits
How left- and right-handed hitters fare against him.
| Split | PA | AB | H | HR | BB | SO | AVG | OBP | SLG | wOBA | K% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| vs LHB | 72 | 61 | 19 | 3 | 9 | 12 | .311 | .408 | .508 | .400 | 16.7% |
| vs RHB | 62 | 54 | 12 | 3 | 7 | 9 | .222 | .311 | .444 | .326 | 14.5% |
Pitch sequencing
What Carson Seymour throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Carson Seymour throws in it.
Pitch arsenal
What he throws, how hard, how often it misses, and what hitters do with it.
| Sinker | 173 | 96.6 | 2,258 | 48.0% | 19.7% | 37 | .270 | .898 | |
| Slider | 122 | 88.6 | 2,090 | 36.9% | 33.3% | 34 | .176 | .596 | |
| Cutter | 115 | 94.3 | 2,438 | 38.3% | 24.5% | 24 | .375 | .964 | |
| Four-Seam Fastball | 85 | 97.2 | 2,232 | 47.1% | 14.6% | 18 | .222 | .697 | |
| Splitter | 14 | 91.7 | 1,301 | 28.6% | 0.0% | 3 | — | — |
Head to head
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Similar players
Nearest 2026 seasons by command, run prevention and role, on rate statistics rather than totals.
wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.