LAA · P

Jack Kochanowicz

Age 25 B/T L/R 6′7″, 228 lb USA MLB debut 2024

40-man Pitch-design idea

The Angels’ roster as it stands on the 40-man, off the 26-man (call-up depth)
Injured list Ended 2026 on the 60-day IL: Right elbow inflammation (since Jun 7)
Trade read Available at a price: LAA 11% playoff odds; control through 2030.

Keystone Stuff 85 4th pct

2026 fWAR 0.2

Projected 2027 WAR 0.2 Keystone Marcel+ at 113 IP

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 1,106 pitches

Keystone Stuff 85

Keystone Location 82

Keystone Pitching 79

Run value (xRV) −0.98

Strikeout % 15.9%

Walk % 12.2%

Whiff % 23.6%

Chase % 25.6%

Fastball velo 95.9

Extension 6.3 ft

64.0 IP6.19 ERA4.97 FIP 36° arm

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

RHP · arm angle 36° · how to read Show suggested pitch

Pitch	Use	Velo	IVB	HB	Stuff	Loc	Whiff	xRV/100
Sinker38% use	38%	95.7	4.6	+13.0	91	91	17%	−1.00
Changeup23% use	23%	89.9	0.9	+10.3	91	102	32%	−0.58
Four-seam22% use	22%	96.2	13.7	+6.8	77	88	19%	−1.10
Slider16% use	16%	85.6	−4.0	−5.8	101	64	38%	−1.35

Pitch design

Built from his own fastball (95.7 mph) plus the typical shape 37 pitchers with his slot (36°) throw: a cutter around 91.6 mph, −1.2″ rise, +1.8″ arm-side. On the same model it grades +27 against his four-seam, his weakest pitch of the same kind (+12 to +31 across the production and three cross-fit models), about 104 on his four-seam’s scale; the comps’ own cutters grade 97 at the median, so that sits above 86% of them. A season-long project that may not take: about 1.6 runs a season if it does.

Most similar pitchers

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

Similarity	Player	Stuff	’26 WAR	’27 proj	2027
67	J.T. Ginn ATH · ’99	87	1.7	1.6	Pre-arb
56	Brayan Bello BOS · ’99	85	1.0	1.4	Signed $8.7M
50	José Soriano TOR · ’98	92	2.6	2.4	Arb
46	Carmen Mlodzinski PIT · ’99	94	1.6	1.3	Arb
45	Trevor McDonald SF · ’01	93	0.7	1.1	—

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

Sinker 32%

49% zone

Changeup 31%

44% zone

Four-seam 28%

43% zone

Slider 10%

32% 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 0.2 WAR Pre-arb $780K*

2028 0.3 WAR Arbitration $1.4M*

2029 0.3 WAR Arbitration $1.5M*

2030 0.2 WAR Arbitration $1.7M*

* 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
2025AAA	AAA	Salt Lake Bees	24	4	19.2 IP	19.2 IP · 5.95 ERA · 16.7% K · 16.7% BB