CWS · P

Luis Castillo

Age 33 B/T R/R 6′2″, 200 lb Dominican Republic MLB debut 2017

40-man

The White Sox’s roster as it stands #4 starter · 125 IP · 0.8 WAR in the role
Injured list Ended 2026 on the 15-day IL: Right shoulder impingement (since Sep 24)
Trade read Available at a price: CWS 39% playoff odds; control through 2028.

Keystone Stuff 96 30th pct

2026 fWAR 0.3

Projected 2027 WAR 0.9 at 138 IP · 0.8 in his 2027 role

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 2,366 pitches

Keystone Stuff 96

Keystone Location 110

Keystone Pitching 100

Run value (xRV) −0.44

Strikeout % 18.9%

Walk % 7.4%

Whiff % 23.7%

Chase % 31.5%

Fastball velo 95.2

Extension 5.5 ft

130.2 IP5.85 ERA5.04 FIP 16° arm

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

RHP · arm angle 16° · how to read

Pitch	Use	Velo	IVB	HB	Stuff	Loc	Whiff	xRV/100
Four-seam42% use	42%	95.2	12.4	+12.0	102	106	26%	−0.05
Slider25% use	25%	85.6	1.6	−0.7	92	108	27%	−0.30
Sinker18% use	18%	95.4	3.8	+18.1	98	105	11%	−1.53
Changeup15% use	15%	87.4	−0.5	+17.2	87	101	25%	−0.45

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

Most similar pitchers

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

Similarity	Player	Stuff	’26 WAR	’27 proj	2027
54	Brad Lord WSH · ’00	89	0.3	0.6	Pre-arb
46	Bryan Woo SEA · ’00	110	4.1	3.5	Arb
45	Max Scherzer TOR · ’84	97	0.3	0.1	Free agent
42	Zebby Matthews MIN · ’00	92	0.7	1.1	—
41	Stephen Kolek KC · ’97	90	0.5	1.0	Pre-arb

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

Four-seam 45%

44% zone

Slider 22%

48% zone

Changeup 21%

32% zone

Sinker 11%

59% 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 0.9 WAR Guaranteed $24.1M

2028 0.5 WAR Vesting option $25.0M

2029 0.1 WAR Free agent

2030 −0.2 WAR Free agent

Contract Studio →