Greg Weissert

Active

Boston Red Sox · RP

Age 316' 2" · 235 lbsThrows Right

#447 Current#732 Preseason

FBaseball Overview

The 31-year-old right-hander offers Boston solid depth in the middle of their pitching rotation after posting a respectable 2.82 ERA with 57 strikeouts across 67 innings in 2025. Weissert's improved control and sub-1.20 WHIP demonstrate reliable command, making him a dependable source of innings with the potential to accumulate wins in a Red Sox lineup that should score runs consistently. The early 2026 numbers show some regression with a 3.82 ERA over 30 innings, suggesting he may take time to find his form; however, his track record as a useful multi-inning pitcher gives him value in deeper leagues as either a streaming option or back-end rotation piece. Fantasy managers should monitor his role closely, as he lacks the elite strikeout rate needed for higher-leverage saves while his win potential depends heavily on Boston's offensive support.

MLB Pitching

Year	Team	G	W	L	SV	ERA	WHIP	K	IP	BB
2022	New York Yankees	12	3	0	0	5.56	0.97	11	11.1	5
2023	New York Yankees	17	0	0	0	4.05	1.45	22	20.0	8
2024	Boston Red Sox	62	4	2	1	3.13	1.34	58	63.1	20
2025	Boston Red Sox	72	6	6	4	2.82	1.16	57	67.0	21
2026	Boston Red Sox	63	4	2	1	3.26	1.24	60	60.2	20
Career	Totals	226	17	10	6	3.28	1.25	208	222.1	74

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

Minor League Pitching

Year	Team	G	W	L	SV	ERA	WHIP	K	IP	BB
2016	2 teams▼	17	0	1	5	2.84	1.53	25	19	11
2017	Staten Island Yankees	19	2	2	4	4.13	1.06	34	28.1	9
2018	2 teams▼	36	4	4	4	3.12	1.25	86	60.2	28
2019	2 teams▼	39	3	4	4	4.02	1.25	77	65	35
2021	2 teams▼	40	4	3	6	1.64	1.14	60	49.1	27
2022	Scranton/Wilkes-Barre RailRiders	42	2	1	18	1.69	0.90	70	48.0	19
2023	Scranton/Wilkes-Barre RailRiders	38	5	3	10	2.90	1.09	58	40.1	17
2024	Worcester Red Sox	4	0	0	0	1.50	1.00	7	6.0	2
Career	Totals	235	20	18	51	2.87	1.15	417	316.2	148

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

Last Week / Last Month

Current season · MLB only

7 games

G	GS	IP	W-L	SV	ERA	WHIP	K	BB
7	0	7.3	1-0	0	0.00	1.13	7	3

30 games

G	GS	IP	W-L	SV	ERA	WHIP	K	BB
30	0	30.0	4-1	1	2.70	1.17	30	10

Game Log2026 MLB

Loading game log…

Advanced Stats2026 season · via Baseball Savant

Click for year to year changes

FB Velo94.0 mph

Avg Spin2249 rpm

Whiff %23.7%

K %23.5%

BB %7.8%

Hard Hit %30.4%

Barrel %5.3%

xERA3.60

xBA Against0.228

xSLG Against0.363

BA Against0.240

SLG Against0.389

GB%42.1%

FB%31.6%

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

2022

New York Yankees

5.56

0.97

11.1

2023

New York Yankees

4.05

1.45

20.0

2024

Boston Red Sox

3.13

1.34

63.1

2025

Boston Red Sox

2.82

1.16

67.0

2026

Boston Red Sox

3.26

1.24

60.2

Career

Totals

226

3.28

1.25

208

222.1

Year

Team

ERA

WHIP

2016

2 teams▼

2.84

1.53

2017

Staten Island Yankees

4.13

1.06

28.1

2018

2 teams▼

3.12

1.25

60.2

2019

2 teams▼

4.02

1.25

2021

2 teams▼

1.64

1.14

49.1

2022

Scranton/Wilkes-Barre RailRiders

1.69

0.90

48.0

2023

Scranton/Wilkes-Barre RailRiders

2.90

1.09

40.1

2024

Worcester Red Sox

1.50

1.00

6.0

Career

Totals

235

2.87

1.15

417

316.2

148

W-L

ERA

WHIP

7.3

1-0

0.00

1.13

W-L

ERA

WHIP

30.0

4-1

2.70

1.17