José A. Ferrer

Active

Seattle Mariners · Pitcher

Age 266' 1" · 233 lbsThrows Left

#267 Current

FBaseball Overview

This 26-year-old right-hander operates in a multi-inning relief role for Seattle, offering modest win-loss upside while contributing meaningful strikeout volume and save opportunities in a competitive bullpen. His early 2026 numbers show significant improvement, with a pristine 2.50 ERA and 1.33 WHIP over 36 innings compared to a rougher 4.48 ERA in 2025, suggesting he's trending toward better command and control. The 11 saves accumulated last season indicate he'll see high-leverage opportunities, though his strikeout rate of roughly one per inning positions him as a depth contributor in that category rather than a league-winner. The primary risk is sustainability of this early-season ERA improvement and whether he maintains save eligibility if deeper relievers take over closer duties.

MLB Pitching

Year	Team	G	W	L	SV	ERA	WHIP	K	IP	BB
2023	Washington Nationals	39	3	0	0	5.03	1.47	25	34.0	13
2024	Washington Nationals	31	1	0	1	3.38	1.03	25	32.0	6
2025	Washington Nationals	72	4	4	11	4.48	1.27	71	76.1	16
2026	Seattle Mariners	50	4	2	3	3.00	1.33	37	45.0	13
Career	Totals	192	12	6	15	4.04	1.28	158	187.1	48

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	DSL Nationals	14	0	1	1	0	3.60	1.30	53	30.0	11
2019	GCL Nationals	9	2	2	3	0	2.91	1.20	24	21.2	13
2021	FCL Nationals	17	0	0	4	2	2.78	1.12	47	35.2	9
2022	3 teams▼	48	0	3	2	11	2.48	0.99	78	65.1	11
2023	Rochester Red Wings	34	0	4	3	0	3.83	1.55	33	40.0	20
2024	2 teams▼	8	0	1	0	0	2.08	0.81	9	8.2	4
Career	Totals	130	2	11	13	13	3.00	1.19	244	201.1	68

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 Velo97.4 mph

Avg Spin2198 rpm

Whiff %20.3%

K %18.8%

BB %6.6%

Hard Hit %35.0%

Barrel %5.6%

xERA3.38

xBA Against0.229

xSLG Against0.351

BA Against0.264

SLG Against0.371

GB%55.2%

FB%24.5%

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

Washington Nationals

5.03

1.47

34.0

2024

Washington Nationals

3.38

1.03

32.0

2025

Washington Nationals

4.48

1.27

76.1

2026

Seattle Mariners

3.00

1.33

45.0

Career

Totals

192

4.04

1.28

158

187.1

Year

Team

ERA

WHIP

2018

DSL Nationals

3.60

1.30

30.0

2019

GCL Nationals

2.91

1.20

21.2

2021

FCL Nationals

2.78

1.12

35.2

2022

3 teams▼

2.48

0.99

65.1

2023

Rochester Red Wings

3.83

1.55

40.0

2024

2 teams▼

2.08

0.81

8.2

Career

Totals

130

3.00

1.19

244

201.1