TEX · P

Kumar Rocker

Age 26 B/T R/R 6′5″, 245 lb USA MLB debut 2024

40-man

Texas’ roster as it stands #5 starter · 131 IP · 1.2 WAR in the role
Trade read Available at a price: TEX 25% playoff odds; control through 2031.

Keystone Stuff 89 10th pct

2026 fWAR 1.6

Projected 2027 WAR 1.4 at 150 IP · 1.2 in his 2027 role

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 2,496 pitches

Keystone Stuff 89

Keystone Location 89

Keystone Pitching 82

Run value (xRV) −0.31

Strikeout % 21.4%

Walk % 9.5%

Whiff % 26.1%

Chase % 31.4%

Fastball velo 94.4

Extension 6.8 ft

148.0 IP4.38 ERA4.31 FIP 34° arm

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

RHP · arm angle 34° · how to read

Pitch	Use	Velo	IVB	HB	Stuff	Loc	Whiff	xRV/100
Slider38% use	38%	83.1	−4.0	−0.8	95	97	42%	+1.38
Sinker29% use	29%	94.3	7.6	+16.1	97	94	9%	−1.17
Four-seam15% use	15%	94.5	12.2	+10.5	79	87	23%	−0.53
Cutter14% use	14%	90.2	7.2	−0.9	92	86	22%	−1.69
Changeup3% use	3%	88.7	6.2	+14.5	76	92	24%	−3.18

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

Most similar pitchers

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

Similarity	Player	Stuff	’26 WAR	’27 proj	2027
55	Brady Singer CIN · ’96	94	0.1	1.2	Free agent
48	Brayan Bello BOS · ’99	85	1.0	1.4	Signed $8.7M
46	J.T. Ginn ATH · ’99	87	1.7	1.6	Pre-arb
44	Grant Holmes ATL · ’96	90	0.8	0.9	Pre-arb
44	Luinder Avila KC · ’01	100	0.4	0.5	—

Brady Singer (similarity 55, 1.2 WAR projected for 2027) is a free agent this winter: a similar arsenal available without trading talent, at a free agent’s price. Opportunity Finder →

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

Slider 38%

32% zone

Sinker 22%

52% zone

Four-seam 20%

45% zone

Cutter 14%

46% zone

Changeup 6%

38% 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 Pre-arb $780K*

2028 1.4 WAR Pre-arb $803K*

2029 1.3 WAR Arbitration $2.9M*

2030 1.2 WAR Arbitration $5.3M*

* 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
2025AA	AA	Frisco RoughRiders	25	1	3 IP	3 IP · 0.00 ERA · 30.0% K · 0.0% BB
2025AAA	AAA	Round Rock Express	25	4	16 IP	16 IP · 3.94 ERA · 23.1% K · 4.6% BB

ABS challenges · 2026

Baseball Savant

As pitcher 100% 1/1 won · +0.1 runs