Players · G · Pitcher · 2026

Foster Griffin

Washington Nationals National League East

Age: 31
B/T: R/L
Height: 6' 3"
Weight: 225 lb
Number: #22

Born: July 27, 1995 in Orlando, FL, United States
MLB debut: July 27, 2020
Drafted: 2014, round 1
High school: First Academy
Salary, 2026: $5.5M

dbWAR: 2.8
IP: 172.2
ERA: 3.60
FIP: 3.96
K/9: 8.2
FIP−: 95

Foster Griffin is a starting pitcher for the Washington Nationals. In 2026 he struck out 158 batters over 172.2 innings across 31 appearances, 31 of them starts, going 15-6. His ERA of 3.60 is 13.9% lower than the league average of 4.18 — 5th of 18 on his team, and 180th of 538 among MLB pitchers with 20+ innings. Stripping out defence, his 3.96 FIP suggests that his ERA had some help behind him. He missed bats on 23.2% of swings (11.2% of every pitch he threw), walked 6.2% of the batters he faced and struck out 21.9%. His 2.7 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.

League context

Percentile among qualified pitchers, 2026.

FIP3.96

K/98.2

WHIP1.21

WAR2.7

WAR by season

Pitching

Standard and advanced, by season.


2026	WSH/CLE	31	31	172.2	15	6	164	69	158	45	3.60	3.96	1.21	8.2	2.3	86	95	2.7
2022	KC/TOR	6	0	6.1	0	0	7	6	4	5	8.53	4.69	1.89	5.7	7.1	215	118	-0.0
2020	KC	1	0	1.2	1	0	0	0	1	0	0.00	1.99	0.00	5.4	0.0	0	45	0.1

Platoon splits

How left- and right-handed hitters fare against him.

Season

Opponent batting by the side the hitter bats from, 2026. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
Split	PA	AB	H	HR	BB	SO	AVG	OBP	SLG	wOBA	K%
vs LHB	197	181	37	7	10	57	.204	.269	.376	.286	28.9%
vs RHB	524	480	127	16	35	101	.265	.318	.415	.323	19.3%

Pitch sequencing

What Foster Griffin throws in each count, and what he follows each pitch with. Select any cell for the breakdown.

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CutterFour-seamSweeperChangeupSinkerCurveballSplitter

Select a count to see exactly what Foster Griffin throws in it.

Pitch arsenal

What he throws, how hard, how often it misses, and what hitters do with it.

Season


Cutter	32.5%	920	88.5	2,244	53.8%	19.7%	223	.265	.756
Four-Seam Fastball	16.2%	458	91.5	2,089	49.3%	19.3%	91	.209	.720
Sweeper	15.0%	425	80.3	2,529	48.2%	32.5%	104	.279	.793
Changeup	11.5%	327	82.5	1,862	36.7%	32.5%	77	.182	.503
Sinker	10.3%	292	91.4	2,042	50.7%	15.5%	52	.192	.561
Curveball	8.9%	251	77.8	2,356	45.0%	23.9%	63	.365	.963
Splitter	5.6%	160	81.3	1,337	33.8%	25.6%	51	.196	.451

Foster Griffin's arsenal by usage. Velocity is average release speed in mph, spin in rpm, and whiff rate is misses per swing — the cleanest single measure of whether a pitch beats hitters. BAA and OPS are what hitters did against each pitch, credited to the one that ended the plate appearance, and are left blank under 15 at-bats.

Head to head

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Foster Griffin

Similar players

Nearest 2026 seasons by command, run prevention and role, on rate statistics rather than totals.

Emerson HancockSEA

ERA: 3.57
FIP: 4.00
SO: 126
WAR: 1.8

Very close

Kade AndersonSEA

ERA: 4.18
FIP: 3.72
SO: 28
WAR: 0.5

Very close

Tyler MahleSF

ERA: 3.99
FIP: 3.99
SO: 137
WAR: 2.1

Very close

Robert GasserMIL

ERA: 3.87
FIP: 4.24
SO: 103
WAR: 1.2

Very close

How these are computed

wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.