Players · O · Pitcher · 2025

Reese Olson

Age: 26
B/T: R/R
Height: 6' 1"
Weight: 160 lb
Number: #45

Born: July 31, 1999 in Gainesville, GA, United States
MLB debut: June 2, 2023
Drafted: 2018, round 13
High school: North Hall

dbWAR: 5.6
IP: 68.2
ERA: 3.15
FIP: 3.50
K/9: 8.5
FIP−: 84

Reese Olson was a starting pitcher for the Detroit Tigers. In 2025 he struck out 65 batters over 68.2 innings across 13 appearances, 13 of them starts, going 4-4. His ERA of 3.15 was 24.4% lower than the league average of 4.16 — 6th of 16 on his team, and 146th of 542 among MLB pitchers with 20+ innings. Stripping out defence, his 3.50 FIP suggests that his ERA had some help behind him. He missed bats on 29.7% of swings (13.2% of every pitch he threw), walked 8.8% of the batters he faced and struck out 22.8%. His 1.4 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.

FIP3.50

K/98.5

WHIP1.21

WAR1.4

WAR by season

Pitching

Standard and advanced, by season.


2025	DET	13	13	68.2	4	4	58	24	65	25	3.15	3.50	1.21	8.5	3.3	76	84	1.4
2024	DET	22	22	112.1	4	8	100	44	101	33	3.53	3.17	1.18	8.1	2.6	86	78	2.6
2023	DET	21	18	103.2	5	7	83	46	103	33	3.99	4.01	1.12	8.9	2.9	92	93	1.6

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	131	116	24	3	10	31	.207	.292	.319	.272	23.7%
vs RHB	154	138	34	2	15	34	.246	.325	.348	.304	22.1%

Pitch sequencing

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

ShowBatter

SinkerChangeupSliderFour-seamCurveball

Select a count to see exactly what Reese Olson throws in it.

Pitch arsenal

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

Season


Sinker	27.2%	315	94.4	2,170	40.6%	2.6%	72	.306	.786
Changeup	25.9%	300	87.7	1,959	47.3%	46.2%	63	.143	.480
Slider	21.6%	250	84.3	2,841	48.4%	44.8%	59	.237	.642
Four-Seam Fastball	19.4%	225	94.3	2,324	47.6%	15.5%	52	.250	.676
Curveball	5.5%	64	79.7	2,458	26.6%	36.8%	10	—	—

Reese Olson'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.

Head to head

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Similar players

Nearest 2025 seasons by command, run prevention and role, on rate statistics rather than totals.

Framber ValdezHOU

ERA: 3.66
FIP: 3.37
SO: 187
WAR: 4.0

Very close

Hurston WaldrepATL

ERA: 2.88
FIP: 3.21
SO: 55
WAR: 1.3

Very close

Kris BubicKC

ERA: 2.55
FIP: 2.89
SO: 116
WAR: 3.0

Very close

Corbin BurnesAZ

ERA: 2.66
FIP: 3.94
SO: 63
WAR: 0.9

Very close

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.