Matt Brash

ActiveIL

Seattle Mariners · Pitcher

Age 286' 1" · 173 lbsThrows Right

FBaseball Overview

The 28-year-old right-hander offers intriguing early-season appeal after a blistering start to 2026, posting a 0.54 ERA with a 0.84 WHIP across limited innings while showcasing elite strikeout stuff with 15 strikeouts in just 16.2 innings pitched. Brash's role remains a key consideration for fantasy managers—his 2025 campaign saw him pick up four saves in a relief capacity, but his exceptional ERA and strikeout rate suggest he could develop into a reliable starter or high-leverage reliever depending on Seattle's needs. The primary risk lies in durability and volume, given his modest innings totals in early 2026, though his strikeout prowess and sub-3.00 ERA trajectory in 2025 indicate significant upside if he secures consistent playing time. For fantasy purposes, Brash represents a speculative deep-league option with ceiling potential in strikeouts and ERA categories if his early-season dominance translates to an expanded role.

MLB Pitching

Year	Team	G	GS	W	L	SV	ERA	WHIP	K	IP	BB
2022	Seattle Mariners	39	5	4	4	0	4.44	1.56	62	50.2	33
2023	Seattle Mariners	78	0	9	4	4	3.06	1.33	107	70.2	29
2025	Seattle Mariners	53	0	1	3	4	2.47	1.25	58	47.1	18
2026	Seattle Mariners	20	0	3	0	0	0.54	0.84	15	16.2	6
Career	Totals	190	5	17	11	8	3.06	1.33	242	185.1	86

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
2019	2 teams▼	5	1	0	0	0	1.69	0.75	8	5.1	0
2021	2 teams▼	20	19	6	4	1	2.31	1.14	142	97.1	48
2022	Tacoma Rainiers	22	0	0	1	3	3.46	1.27	41	26.0	14
2025	Tacoma Rainiers	6	0	0	0	0	8.44	2.06	5	5.1	2
2026	Tacoma Rainiers	2	0	1	0	0	0.00	1.20	4	1.2	2
Career	Totals	55	20	7	5	4	2.72	1.19	200	135.2	66

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

Game Log2026 season

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Pitching Analytics2026 season · via Baseball Savant

Click for year to year changes

FB Velo97.2 mph

Avg Spin2591 rpm

Whiff %32.1%

K %23.4%

BB %9.4%

Hard Hit %40.0%

Barrel %5.0%

xERA4.16

xBA Against0.234

xSLG Against0.347

BA Against0.151

SLG Against0.189

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.

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Year

Team

ERA

WHIP

2022

Seattle Mariners

4.44

1.56

50.2

2023

Seattle Mariners

3.06

1.33

107

70.2

2025

Seattle Mariners

2.47

1.25

47.1

2026

Seattle Mariners

0.54

0.84

16.2

Career

Totals

190

3.06

1.33

242

185.1

Year

Team

ERA

WHIP

2019

2 teams▼

1.69

0.75

5.1

2021

2 teams▼

2.31

1.14

142

97.1

2022

Tacoma Rainiers

3.46

1.27

26.0

2025

Tacoma Rainiers

8.44

2.06

5.1

2026

Tacoma Rainiers

0.00

1.20

1.2

Career

Totals

2.72

1.19

200

135.2