Players · H · Pitcher · 2025 regular season

Sean Hjelle

San Francisco Giants National League West

Age: 28
B/T: R/R
Height: 6' 11"
Weight: 247 lb
Number: #64

Born: May 7, 1997 in Fridley, MN, United States
MLB debut: May 6, 2022
Drafted: 2018, round 2
College: Kentucky
High school: Mahtomedi

dbWAR: 1.3
IP: 15.0
ERA: 7.80
FIP: 5.20
K/9: 6.6
FIP−: 125

Sean Hjelle was a relief pitcher for the San Francisco Giants. In 2025 he struck out 11 batters over 15.0 innings across 12 appearances, going 1-1. His ERA of 7.80 was 87.6% higher than the league average of 4.16. Stripping out defence, his 5.20 FIP suggests he pitched better than his ERA shows. He missed bats on 23.4% of swings (9.8% of every pitch he threw), walked 12.3% of the batters he faced and struck out 15.1%. His -0.1 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, 2025 regular season.

FIP5.20

K/96.6

WHIP2.00

WAR-.1

WAR by season

Pitching Regular season

Standard and advanced, by season. Regular-season games only.


2025	SF	12	1	15.0	1	1	21	13	11	9	7.80	5.20	2.00	6.6	5.4	188	125	-0.1
2024	SF	58	0	80.2	3	4	84	35	75	14	3.90	3.63	1.21	8.4	1.6	96	89	0.9
2023	SF	15	0	29.0	2	1	38	21	31	13	6.52	4.22	1.76	9.6	4.0	150	97	0.2
2022	SF	8	0	25.0	1	2	33	16	28	8	5.76	3.51	1.64	10.1	2.9	145	89	0.3

Platoon splits

How left- and right-handed hitters fare against him.

Season

Opponent batting by the side the hitter bats from, 2025. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
Split	PA	AB	H	HR	BB	SO	AVG	OBP	SLG	wOBA	K%
vs LHB	34	28	12	1	6	3	.429	.529	.679	.504	8.8%
vs RHB	39	34	9	1	3	8	.265	.316	.412	.316	20.5%

Pitch sequencing

What Sean Hjelle throws in each count, and what he follows each pitch with. Select any cell for the breakdown.

ShowBatter

SinkerKnuckle curveCutter

Select a count to see exactly what Sean Hjelle throws in it.

Pitch arsenal

What he throws, how hard, how often it misses, and what hitters do with it.

Season


Sinker	50.0%	127	93.6	2,307	44.9%	8.7%	27	.333	.886
Knuckle Curve	35.8%	91	85.8	2,043	42.9%	41.9%	22	.318	.966
Cutter	14.2%	36	89.6	2,238	30.6%	16.7%	13	—	—

Sean Hjelle's arsenal by usage. Velocity is average release speed in mph, spin in rpm, and whiff rate is misses per swing — the cleanest single measure of whether a pitch beats hitters. BAA and OPS are what hitters did against each pitch, credited to the one that ended the plate appearance, and are left blank under 15 at-bats.

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Sean Hjelle

How these are computed

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.