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Seth Lonsway
Seth Lonsway
San Francisco Giants • Pitcher
Age 27 • 6' 0" • 206 lb
Bats: L • Throws: L
MLB Debut: 2026-08-29
Born: St. Mary's , OH • USA
Draft: 2021
2026 Stats
W
0
L
0
ERA
9.00
WHIP
2.50
IP
2.0
SO
2
SV
0
HLD
0
G
1
GS
0
Career Stats
W
0
L
0
ERA
9.00
WHIP
2.50
IP
2.0
SO
2
SV
0
HLD
0
G
1
GS
0
Year-by-Year Pitching
Year Team GGSIP WLSVSO ERAWHIPAwards
2026 SF 1 — 2.0 — — — 2 9.00 2.50
Spring Training
Pitching
YearTeamGGSIPWLSVSOERAWHIP
2025 SF 2—1.0 ———2 9.003.00
Game Logs
Season selector loads one year at a time.
Pitching
Date Opponent IP H R ER BB SO HR
2026-08-29 vs AZ 2.0 5 3 2 0 2 0
Transactions
Entire history • newest first.
2026-08-29
San Francisco Giants selected the contract of LHP Seth Lonsway from Sacramento River Cats.
2026-08-29
San Francisco Giants optioned LHP Seth Lonsway to Sacramento River Cats.
2026-03-13
LHP Seth Lonsway assigned to San Francisco Giants.
2025-02-22
LHP Seth Lonsway assigned to San Francisco Giants.
2021-07-23
San Francisco Giants signed LHP Seth Lonsway.
Scouting Report
Statcast-style percentiles • Basenerd theme
Season 2026
Ready
Basic Line
Season / Game
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Pitch Arsenal
Usage • Velo • Break • Spin • xwOBA
Pitch N Use% Velo HB IVB Spin xwOBA Whiff% Zone% Chase% BNStuff+ BNCtrl+
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Notes
Primary pitch summary
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Movement Profile (Induced Break)
Pitcher's View: HB vs Rise / Drop (in)
Circles: 12/18/24 in • Dots = pitch types (size ~ pitch count)
Pitch Location Heatmaps
KDE-style blur • fixed zone • catcher POV
vs. LHH
vs. RHH
Zone: left -0.7083 / right 0.7083 • bot 1.595 / top 3.394 • Domain: X [-2,2], Z [0,5]
Statcast Game Log
Per-game pitch metrics from Statcast
Date Pitches Velo BNStuff+ BNCtrl+ Whiff% Zone% Chase% K% BB% xwOBA
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