Foster Griffin

Active

Washington Nationals · Pitcher

Age 306' 3" · 225 lbsThrows Left

FBaseball Overview

At 30 years old, Griffin enters 2026 as a reliable mid-rotation starter for the Nationals after posting a solid 2.93 ERA with a 1.04 WHIP over 98 innings. His 8-2 record and 98 strikeouts demonstrate consistency in both run prevention and K production, making him a dependable source of wins and strikeouts for fantasy managers seeking depth on the mound. The veteran's All-Star pedigree from his Texas days suggests he has the stuff to remain effective, though his modest innings total and lack of save opportunities limit his ceiling in most league formats. Griffin projects as a streaming-friendly back-end starter who can deliver solid ratios without elite upside, ideal for managers prioritizing ERA and WHIP stability over volume statistics.

News Updates

Foster Griffin improves to 9-2 with strong outing
Foster Griffin (9-2) picked up his ninth win, allowing just one run on four hits over five innings in the Nationals' 9-5 victory over Pittsburgh. The pitcher continues to be effective for Washington's rotation.
Jul 4, 2026

MLB Pitching

Year	Team	G	GS	W	L	ERA	WHIP	K	IP	BB
2020	Kansas City Royals	1	0	1	0	0.00	0.00	1	1.2	0
2022	2 teams▼	6	0	0	0	8.53	1.89	4	6.1	5
2026	Washington Nationals	18	18	9	2	2.87	1.04	100	103.1	26
Career	Totals	25	18	10	2	3.15	1.07	105	111.1	31

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
2014	Burlington Royals	11	11	0	2	0	3.21	1.11	19	28.0	12
2015	Lexington Legends	22	22	4	6	0	5.44	1.54	71	102.2	35
2016	2 teams▼	27	27	6	14	0	5.43	1.64	105	132.2	52
2017	2 teams▼	28	28	15	7	0	3.35	1.27	141	161.1	54
2018	Northwest Arkansas Naturals	28	26	10	12	0	5.13	1.55	117	152.2	40
2019	Omaha Storm Chasers	25	25	8	6	0	5.23	1.52	111	130.2	64
2021	5 teams▼	4	4	0	1	0	10.50	1.83	9	6.0	5
2022	2 teams▼	38	0	6	0	1	2.10	1.07	57	51.1	15
Career	Totals	194	154	49	50	1	4.54	1.44	672	811.1	290

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

Game Log2026 season

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Analytics2026 season · via Baseball Savant

Click for year to year changes

FB Velo91.4 mph

Avg Spin2167 rpm

Whiff %24.8%

K %23.8%

BB %6.2%

Hard Hit %37.8%

Barrel %10.5%

xERA4.02

xBA Against0.242

xSLG Against0.413

BA Against0.210

SLG Against0.371

GB%45.3%

FB%26.5%

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

2020

Kansas City Royals

0.00

1.2

2022

2 teams▼

8.53

1.89

6.1

2026

Washington Nationals

2.87

1.04

100

103.1

Career

Totals

3.15

1.07

105

111.1

Year

Team

ERA

WHIP

2014

Burlington Royals

3.21

1.11

28.0

2015

Lexington Legends

5.44

1.54

102.2

2016

2 teams▼

5.43

1.64

105

132.2

2017

2 teams▼

3.35

1.27

141

161.1

2018

Northwest Arkansas Naturals

5.13

1.55

117

152.2

2019

Omaha Storm Chasers

5.23

1.52

111

130.2

2021

5 teams▼

10.50

1.83

6.0

2022

2 teams▼

2.10

1.07

51.1

Career

Totals

194

154

4.54

1.44

672

811.1

290