Andrés Muñoz

Active

Seattle Mariners · Pitcher

Age 276' 2" · 222 lbsThrows Right

FBaseball Overview

The 2026 season presents a step backward for this back-to-back All-Star closer, whose early metrics show a significant spike in ERA (4.91 vs. 1.73) and WHIP (1.33 vs. 1.03) compared to his dominant 2025 campaign when he posted an All-MLB Second Team selection. While Muñoz retains the closer role with 15 saves through late spring, the diminished strikeout rate relative to his innings pitched and elevated walk activity suggest he's dealing with control issues that could limit his fantasy upside as a premier saves source. Managers targeting him should proceed with caution, as his 2025 form — which featured elite strikeout production and stellar ERA/WHIP marks — appears to be firmly in the rearview, making him a risky investment until he demonstrates that the early struggles are merely an anomaly rather than a concerning trend.

MLB Pitching

Year	Team	G	W	L	SV	ERA	WHIP	K	IP	BB
2019	San Diego Padres	22	1	1	1	3.91	1.17	30	23.0	11
2021	Seattle Mariners	1	0	0	0	0.00	3.00	1	0.2	2
2022	Seattle Mariners	64	2	5	4	2.49	0.89	96	65.0	15
2023	Seattle Mariners	52	4	7	13	2.94	1.27	67	49.0	22
2024	Seattle Mariners	60	3	7	22	2.12	0.96	77	59.1	26
2025	Seattle Mariners	64	3	3	38	1.73	1.03	83	62.1	28
2026	Seattle Mariners	35	3	4	16	4.45	1.33	48	32.1	14
Career	Totals	298	16	27	94	2.65	1.07	402	291.2	118

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
2016	AZL Padres	16	1	1	1	0	5.49	1.63	26	19.2	16
2017	2 teams▼	24	0	3	0	1	3.81	1.35	38	26	18
2018	2 teams▼	25	0	2	1	7	0.73	0.97	28	24.2	13
2019	2 teams▼	35	0	3	4	6	3.03	1.21	58	35.2	18
2021	2 teams▼	4	2	0	0	0	4.91	0.55	7	3.2	1
2023	Tacoma Rainiers	3	0	0	0	1	0.00	0.33	3	3.0	1
Career	Totals	107	3	9	6	15	3.12	1.22	160	112.2	67

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 Velo98.9 mph

Avg Spin2308 rpm

Whiff %40.1%

K %34.0%

BB %9.9%

Hard Hit %43.6%

Barrel %9.0%

xERA3.99

xBA Against0.236

xSLG Against0.37

BA Against0.232

SLG Against0.352

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

2019

San Diego Padres

3.91

1.17

23.0

2021

Seattle Mariners

0.00

3.00

0.2

2022

Seattle Mariners

2.49

0.89

65.0

2023

Seattle Mariners

2.94

1.27

49.0

2024

Seattle Mariners

2.12

0.96

59.1

2025

Seattle Mariners

1.73

1.03

62.1

2026

Seattle Mariners

4.45

1.33

32.1

Career

Totals

298

2.65

1.07

402

291.2

118

Year

Team

ERA

WHIP

2016

AZL Padres

5.49

1.63

19.2

2017

2 teams▼

3.81

1.35

2018

2 teams▼

0.73

0.97

24.2

2019

2 teams▼

3.03

1.21

35.2

2021

2 teams▼

4.91

0.55

3.2

2023

Tacoma Rainiers

0.00

0.33

3.0

Career

Totals

107

3.12

1.22

160

112.2