Kyle Leahy

Active

St. Louis Cardinals · Pitcher

Age 296' 5" · 225 lbsThrows Right

#242 Current

FBaseball Overview

This 29-year-old right-hander enters 2026 as a mid-rotation arm for the Cardinals with modest win potential in a competitive division. After posting a solid 3.07 ERA with an impressive 1.23 WHIP last season, Leahy shows some regression in 2026 with a 4.09 ERA and 1.48 WHIP, suggesting increased walks or reduced run support are impacting his efficiency. His strikeout production remains respectable at 67 K over 81 innings, though the rate has dipped slightly from his 2025 pace, making him best suited for deeper fantasy rosters seeking strikeout depth rather than elite pitching production. The lack of save opportunities and inconsistent win totals limit his ceiling, but his durability and 80+ inning workload provide floor value for fantasy managers seeking streaming options or backend rotation depth.

MLB Pitching

Year	Team	G	GS	W	L	SV	ERA	WHIP	K	IP	BB
2023	St. Louis Cardinals	3	0	0	1	0	21.60	5.40	2	1.2	5
2024	St. Louis Cardinals	33	0	1	1	1	4.07	1.03	33	48.2	10
2025	St. Louis Cardinals	62	1	4	2	1	3.07	1.23	80	88.0	28
2026	St. Louis Cardinals	21	21	7	4	0	3.44	1.33	91	107.1	35
Career	Totals	119	22	12	8	2	3.55	1.26	206	245.2	78

Source: MLB Stats API · Multi-team seasons show combined totals — click to expand

Minor League Pitching

Year	Team	G	GS	W	L	SV	ERA	WHIP	K	IP	BB
2018	Johnson City Cardinals	13	10	4	3	2	5.68	1.69	45	58.2	11
2019	3 teams▼	23	22	5	13	0	3.73	1.27	102	123	34
2021	Springfield Cardinals	25	10	0	8	0	8.20	2.01	63	86.2	44
2022	2 teams▼	28	26	10	7	0	5.29	1.60	146	144.2	72
2023	Memphis Redbirds	46	4	5	4	0	6.26	1.72	92	83.1	39
2024	Memphis Redbirds	16	0	0	4	0	3.86	1.36	31	28.0	8
Career	Totals	151	72	24	39	2	5.53	1.60	479	524.1	208

Source: MLB Stats API · Multi-team seasons show combined totals — click to expand

Game Log2026 MLB

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Advanced Stats2026 season · via Baseball Savant

Click for year to year changes

FB Velo94.1 mph

Avg Spin2184 rpm

Whiff %21.8%

K %20.0%

BB %7.7%

Hard Hit %48.6%

Barrel %10.5%

xERA5.20

xBA Against0.275

xSLG Against0.461

BA Against0.262

SLG Against0.413

GB%45.4%

FB%22.5%

What These Stats Mean

FB Velo — Average fastball velocity. Harder throwers generate more swings and misses, setting up every other pitch in their arsenal. Velocity is the foundation of strikeout upside.

Avg Spin — Average spin rate across all pitches. Higher spin creates more movement and makes pitches harder to square up — elite spinners run better strikeout and batting average against numbers.

Whiff % — Swings-and-misses per swing. The most direct measure of a pitcher's ability to miss bats and the best leading indicator of strikeout rate.

K % — Strikeout rate per batter faced. The core fantasy pitching stat — high K% means reliable strikeout totals that hold up even in shorter starts.

BB % — Walk rate per batter faced. The primary control metric. High BB% tanks ERA and WHIP and keeps baserunners on constantly. Elite starters typically run below 7%.

Hard Hit % — Percentage of batted balls hit 95 mph or harder against. Low hard-hit% means weak contact, protecting both ERA and the defense behind the pitcher.

Barrel % — Percentage of batted balls barreled against. The most direct home run predictor — low barrel% pitchers rarely give up long balls.

xERA — Expected ERA based on contact quality allowed, removing the effect of sequencing, luck, and defense. Better predictor of future ERA than ERA itself.

xBA Against — Expected batting average opponents should hit based on contact quality. A gap between xBA and actual BA indicates unsustainable luck in either direction.

xSLG Against — Expected slugging allowed based on contact quality. High xSLG against predicts future extra-base damage; low xSLG means the pitcher is genuinely suppressing power.

BA Against — Actual batting average opponents are hitting — a key WHIP component. Check xBA to see if the number is sustainable.

SLG Against — Actual slugging allowed. Captures hits, doubles, triples, and home runs — lower means the pitcher is limiting the power damage he gives up.

GB% — Ground ball rate. High GB% pitchers generate double plays, limit home runs, and keep the ball in the park — great for protecting ERA and WHIP ratios.

FB% — Fly ball rate. High FB% pitchers give up more air contact — dangerous when combined with high exit velocity, less so when contact is soft.

Loading player data...

Year

Team

ERA

WHIP

2023

St. Louis Cardinals

21.60

5.40

1.2

2024

St. Louis Cardinals

4.07

1.03

48.2

2025

St. Louis Cardinals

3.07

1.23

88.0

2026

St. Louis Cardinals

3.44

1.33

107.1

Career

Totals

119

3.55

1.26

206

245.2

Year

Team

ERA

WHIP

2018

Johnson City Cardinals

5.68

1.69

58.2

2019

3 teams▼

3.73

1.27

102

123

2021

Springfield Cardinals

8.20

2.01

86.2

2022

2 teams▼

5.29

1.60

146

144.2

2023

Memphis Redbirds

6.26

1.72

83.1

2024

Memphis Redbirds

3.86

1.36

28.0

Career

Totals

151

5.53

1.60

479

524.1

208