TB · P

Griffin Jax

Age 31 B/T R/R 6′2″, 195 lb USA MLB debut 2021

40-man

Tampa Bay’s roster as it stands #2 starter · 101 IP · 1.5 WAR in the role
Injured list 2026: Right elbow discomfort (Aug 9–Sep 2)
Trade read Available at a price: TB 36% playoff odds; control through 2027.

Keystone Stuff 108 78th pct

2026 fWAR 1.6

Projected 2027 WAR 1.4 at 93 IP · 1.5 in his 2027 role

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 1,724 pitches

Keystone Stuff 108

Keystone Location 104

Keystone Pitching 110

Run value (xRV) −0.08

Strikeout % 25.3%

Walk % 7.6%

Whiff % 30.0%

Chase % 35.1%

Fastball velo 95.6

Extension 6.3 ft

112.1 IP3.53 ERA3.76 FIP 43° arm

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

RHP · arm angle 43° · how to read

Pitch	Use	Velo	IVB	HB	Stuff	Loc	Whiff	xRV/100
Sweeper25% use	25%	87.5	−1.1	−12.9	113	98	36%	−0.17
Sinker23% use	23%	95.3	11.2	+16.7	101	106	12%	+0.74
Changeup23% use	23%	90.8	3.9	+15.9	96	111	42%	+1.19
Four-seam18% use	18%	95.9	17.9	+7.9	113	99	27%	−0.89
Curveball9% use	9%	84.9	−14.3	−5.0	100	96	43%	−0.66
Cutter3% use	3%	92.8	8.8	−1.3	103	85	13%	−8.76

No mix change or new pitch clears its bar. The arsenal is efficient for its shapes.

Most similar pitchers

Pitches like Jax: same hand, shape, slot and mix

Similarity	Player	Stuff	’26 WAR	’27 proj	2027
55	Jack Perkins ATH · ’99	103	0.8	0.7	Pre-arb
47	Luinder Avila KC · ’01	100	0.4	0.5	—
42	AJ Blubaugh HOU · ’00	104	0.2	0.3	Pre-arb
40	Orion Kerkering PHI · ’01	107	0.3	0.7	Arb
40	Joe Ryan MIN · ’96	112	2.5	2.4	Free agent

Same-handed pitchers nearest on fastball velocity and shape, arm angle, extension, pitch mix, secondary shapes, Stuff, whiff rate and workload. 2026 regulars only.

Pitch locations · 2026

Where each pitch finishes, by batter side

Changeup 30%

31% zone

Four-seam 21%

43% zone

Sweeper 17%

50% zone

Sinker 16%

62% zone

Curveball 13%

28% zone

Cutter 4%

51% zone

Where each pitch finishes, catcher’s view. The bar marks the batter’s side; the box is an average strike zone. Pitches with 40+ thrown to this side.

Contract & projection

Club control (RosterResource) · Keystone projected WAR

2027 1.4 WAR Arbitration $7.3M*

2028 1.2 WAR Free agent

2029 0.9 WAR Free agent

2030 0.6 WAR Free agent

* projected arbitration or minimum salary. Contract Studio →

Minor leagues

MLB Stats API · public box-score data

SeasonLevel	Level	Team	Age	G	PA / IP	PA / IP ·Line
2026AAA	AAA	Durham Bulls	31	1	3 IP	3 IP · 9.00 ERA · 14.3% K · 14.3% BB

ABS challenges · 2026

Baseball Savant

As pitcher 0% 0/1 won · −0.1 runs