Seth Lonsway (RP) - San Francisco Giants MLB Stats 2025

Updated Oct 28, 2026 10:52 PM ET

Seth Lonsway

· RP · MLB · 2,384 views

28 yrs · 6' 2" · 210 lbs · Bats: Left / Throws: Left

FPPG (DK, 2025)

—

ERA

9.00

W-L

0-0

1.0

2025 Season Stats

Seth posted a 9.0 ERA over 1.0 innings pitched in 2025. He had struck out 2 batters and walked 2 and averaging 18.0 strikeouts per nine innings. His WHIP stood at 3.0, allowing 1 hit.

Pitching Splits Pitching performance splits against left-handed and right-handed batters.

Split	K%	K/9	BB%	wOBA	xFIP	HH%
vs LHB	25.0%	13.5	0.0%	0.288	2.44	33.3%
vs RHB	10.0%	5.4	0.0%	0.500	2.03	33.3%
Overall	14.3%	7.7	0.0%	0.500	2.03	33.3%

Pitching Splits — K% & BB% (2025) Strikeout and walk rates against left-handed batters, right-handed batters, and overall.

Pitching Splits — wOBA (2025) Weighted on-base average allowed against left-handed batters, right-handed batters, and overall. Lower is better for pitchers.

Pitching Splits — HH% (2025) Hard-hit rate allowed against left-handed batters, right-handed batters, and overall. Lower is better for pitchers.

Season Context Key season-level pitching metrics including games played, SIERA, and batted ball data.

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SIERA

3.50

P/IP

19.1

TBF

HH%

33.3%

Barrel%

0.0%

CSW%

27.5%

CSW Prev

—

GB%

80.0%

FB%

20.0%

Bullpen

4.99

RSB

0.00

Batted Ball Profile (2025) Ground ball vs fly ball tendency — higher GB% generally means fewer home runs allowed.

Traditional Stats Standard pitching stats: ERA, FIP, W/L, saves, holds, innings, and games started. 2025 Season

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Seth Lonsway MLB Stats 2025

Seth Lonsway is a RP for the San Francisco Giants. For the 2026 season, Seth had a 14.3% strikeout rate, a 2.03 xFIP, a 7.71 ERA, 2.1 innings pitched. View Seth's 2026 stats, recent performance trends, and key statistical categories to evaluate fantasy value and make informed DFS lineup decisions.

Stats updated November 5, 2026.