Players · G · Pitcher · 2026

Tyron Guerrero

Age: 35
B/T: R/R
Height: 6' 8"
Weight: 225 lb
Number: #41

Born: January 9, 1991 in Bocachica, Colombia
MLB debut: May 17, 2016

dbWAR: .7
IP: 40.2
ERA: 3.10
FIP: 2.46
K/9: 9.1
FIP−: 59

Tyron Guerrero is a relief pitcher for the Boston Red Sox. In 2026 he struck out 41 batters over 40.2 innings across 40 appearances, going 1-2. His ERA of 3.10 is 25.8% lower than the league average of 4.18 — 7th of 19 on his team, and 105th of 538 among MLB pitchers with 20+ innings. Stripping out defence, his 2.46 FIP suggests he pitched better than his ERA shows. He missed bats on 24.1% of swings (13.8% of every pitch he threw), walked 4.8% of the batters he faced and struck out 24.7%. His 1.1 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, 2026.

FIP2.46

K/99.1

WHIP1.11

WAR1.1

WAR by season

Pitching

Standard and advanced, by season.


2026	BOS	40	40.2	1	2	37	14	41	8	3.10	2.46	1.11	9.1	1.8	74	59	1.1
2019	MIA	52	46.0	1	2	42	32	43	36	6.26	6.06	1.70	8.4	7.0	139	135	-0.5
2018	MIA	60	58.0	1	3	64	35	68	30	5.43	4.32	1.62	10.6	4.7	131	104	0.1
2016	SD	1	2.0	0	0	3	1	0	1	4.50	4.65	2.00	0.0	4.5	107	111	0.0

Platoon splits

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

Season

Opponent batting by the side the hitter bats from, 2026. 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	78	72	15	1	6	26	.208	.269	.278	.245	33.3%
vs RHB	88	83	22	1	2	15	.265	.299	.325	.281	17.0%

Pitch sequencing

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

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SinkerSliderSplitter

Select a count to see exactly what Tyron Guerrero throws in it.

Pitch arsenal

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

Season


Sinker	86.2%	523	100.2	2,221	56.2%	23.7%	127	.236	.565
Slider	9.7%	59	91.5	2,105	39.0%	28.1%	18	.167	.433
Splitter	4.1%	25	92.0	1,374	40.0%	23.5%	10	—	—

Tyron Guerrero'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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Tyron Guerrero

Similar players

Nearest 2026 seasons by command, run prevention and role, on rate statistics rather than totals.

Spencer MilesTOR

ERA: 2.57
FIP: 2.66
SO: 91
WAR: 2.4

Very close

Yennier CanoBAL

ERA: 2.90
FIP: 2.78
SO: 45
WAR: 1.1

Very close

David BednarNYY

ERA: 2.47
FIP: 2.61
SO: 76
WAR: 1.7

Bradgley RodriguezSD

ERA: 2.25
FIP: 2.78
SO: 79
WAR: 1.6

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.