Garrett Whitlock

Active

Boston Red Sox · Pitcher

Age 306' 5" · 222 lbsThrows Right

FBaseball Overview

At 30 years old, Whitlock enters 2026 as a reliable multi-inning contributor for Boston, having demonstrated durability and efficiency across his recent seasons with a 2.25 ERA and 1.08 WHIP in 2025. His dual-role flexibility—evidenced by occasional save opportunities alongside consistent win potential—makes him a valuable depth pitcher in fantasy rotations, though his strikeout rate remains moderate rather than elite for streaming purposes. The early 2026 numbers suggest he's maintained his sharp peripherals, posting a 2.60 ERA through 27.2 innings, though fantasy managers should monitor his workload closely given his role as a high-leverage reliever rather than a traditional starter. His appeal lies in steady ERA and WHIP contributions with modest win and strikeout upside, making him best suited for deep leagues or managers seeking stability over ceiling games.

MLB Pitching

Year	Team	G	GS	W	L	SV	ERA	WHIP	K	IP	BB
2021	Boston Red Sox	46	0	8	4	2	1.96	1.10	81	73.1	17
2022	Boston Red Sox	31	9	4	2	6	3.45	1.02	82	78.1	15
2023	Boston Red Sox	22	10	5	5	1	5.15	1.33	72	71.2	13
2024	Boston Red Sox	4	4	1	0	0	1.96	1.15	17	18.1	7
2025	Boston Red Sox	62	0	7	3	1	2.25	1.08	91	72.0	24
2026	Boston Red Sox	30	0	4	1	1	2.48	1.00	34	29.0	6
Career	Totals	195	23	29	15	11	3.07	1.12	377	342.2	82

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

Minor League Pitching

Year	Team	G	GS	W	L	ERA	WHIP	K	IP	BB
2017	2 teams▼	5	3	1	0	3.77	0.98	22	14.1	0
2018	3 teams▼	23	21	8	5	1.86	1.11	122	120.2	41
2019	Trenton Thunder	14	14	3	3	3.07	1.29	57	70.1	18
2022	2 teams▼	2	0	0	0	4.50	1.75	4	4	0
2023	2 teams▼	5	5	1	0	1.29	1.00	25	21	3
2024	Worcester Red Sox	1	1	0	0	0.00	0.64	5	4.2	1
2026	Worcester Red Sox	1	0	0	0	0.00	3.00	1	1.0	2
Career	Totals	51	44	13	8	2.29	1.16	236	235.3	65

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 Velo94.8 mph

Avg Spin2112 rpm

Whiff %30.7%

K %29.8%

BB %5.3%

Hard Hit %31.1%

Barrel %5.4%

xERA3.31

xBA Against0.24

xSLG Against0.366

BA Against0.215

SLG Against0.336

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

2021

Boston Red Sox

1.96

1.10

73.1

2022

Boston Red Sox

3.45

1.02

78.1

2023

Boston Red Sox

5.15

1.33

71.2

2024

Boston Red Sox

1.96

1.15

18.1

2025

Boston Red Sox

2.25

1.08

72.0

2026

Boston Red Sox

2.48

1.00

29.0

Career

Totals

195

3.07

1.12

377

342.2

Year

Team

ERA

WHIP

2017

2 teams▼

3.77

0.98

14.1

2018

3 teams▼

1.86

1.11

122

120.2

2019

Trenton Thunder

3.07

1.29

70.1

2022

2 teams▼

4.50

1.75

2023

2 teams▼

1.29

1.00

2024

Worcester Red Sox

0.00

0.64

4.2

2026

Worcester Red Sox

0.00

3.00

1.0

Career

Totals

2.29

1.16

236

235.3