Players · L · Pitcher · 2026

Kyle Leahy

St. Louis Cardinals National League Central

Age: 29
B/T: S/R
Height: 6' 5"
Weight: 225 lb
Number: #62

Born: June 4, 1997 in Boulder, CO, United States
MLB debut: July 7, 2023
Drafted: 2018, round 17
College: Colorado Mesa

dbWAR: 4.5
IP: 140.0
ERA: 3.66
FIP: 3.60
K/9: 8.5
FIP−: 86

Kyle Leahy is a starting pitcher for the St. Louis Cardinals. In 2026 he struck out 132 batters over 140.0 innings across 30 appearances, 30 of them starts, going 10-5. His ERA of 3.66 is 12.3% lower than the league average of 4.18 — 6th of 16 on his team, and 197th of 538 among MLB pitchers with 20+ innings. Stripping out defence, his 3.60 FIP suggests the ERA was no fluke. He missed bats on 22.7% of swings (10.5% of every pitch he threw), walked 6.9% of the batters he faced and struck out 22.1%. His 2.5 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.

FIP3.60

K/98.5

WHIP1.34

WAR2.5

WAR by season

Pitching

Standard and advanced, by season.


2026	STL	30	30	140.0	10	5	0	147	57	132	41	3.66	3.60	1.34	8.5	2.6	88	86	2.5
2025	STL	62	1	88.0	4	2	1	80	30	80	28	3.07	3.04	1.23	8.2	2.9	74	73	1.6
2024	STL	33	0	48.2	1	1	1	40	22	33	10	4.07	3.56	1.03	6.1	1.8	100	87	0.6
2023	STL	3	0	1.2	0	1	0	4	4	2	5	21.60	19.46	5.40	10.8	27.0	499	449	-0.3

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	324	290	90	9	32	67	.310	.381	.469	.376	20.7%
vs RHB	272	256	57	6	9	65	.223	.259	.359	.272	23.9%

Pitch sequencing

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

ShowBatter

Four-seamSliderCurveballChangeupSweeperSinker

Select a count to see exactly what Kyle Leahy throws in it.

Pitch arsenal

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

Season


Four-Seam Fastball	26.0%	605	94.3	2,177	44.6%	17.5%	111	.342	.966
Slider	16.4%	381	89.4	2,312	50.4%	23.2%	87	.264	.718
Curveball	16.3%	379	83.0	2,310	43.0%	27.2%	89	.202	.623
Changeup	14.5%	338	88.6	1,454	38.8%	32.3%	86	.256	.682
Sweeper	13.5%	315	84.8	2,632	47.0%	25.9%	72	.292	.764
Sinker	13.2%	307	94.2	2,194	49.8%	11.6%	102	.245	.652

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

Davis MartinCWS

ERA: 3.84
FIP: 3.82
SO: 121
WAR: 2.3

Very close

Will WarrenNYY

ERA: 3.92
FIP: 3.94
SO: 158
WAR: 2.4

Very close

Noah CameronKC

ERA: 4.11
FIP: 3.93
SO: 158
WAR: 2.9

Very close

Shane BazBAL

ERA: 4.11
FIP: 3.63
SO: 154
WAR: 3.2

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.