NYM · P

Zac Thornton

Age 24 B/T L/L 6′3″, 170 lb USA MLB debut 2026

40-man FV 45 · #12 in org

The Mets’ roster as it stands #3 starter · 111 IP · 1.0 WAR in the role
Trade read Unlikely to be traded: Young and cheap for years (age 25, about $41M of surplus value through 2032): a core piece.

Keystone Stuff 101 53rd pct

2026 fWAR 0.7

Projected 2027 WAR 1.0 at 112 IP · 1.0 in his 2027 role

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 1,257 pitches

Keystone Stuff 101

Keystone Location 102

Keystone Pitching 97

Run value (xRV) −0.07

Strikeout % 18.7%

Walk % 5.3%

Whiff % 17.8%

Chase % 32.7%

Fastball velo 92.3

Extension 6.3 ft

84.1 IP3.42 ERA4.51 FIP 50° arm

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

LHP · arm angle 50° · how to read

Pitch	Use	Velo	IVB	HB	Stuff	Loc	Whiff	xRV/100
Cutter32% use	32%	88.5	8.9	−3.4	104	98	16%	+0.51
Four-seam25% use	25%	92.3	17.7	+6.3	92	101	18%	−0.29
Sweeper16% use	16%	80.0	1.1	−12.8	109	99	25%	0.00
Sinker11% use	11%	92.2	12.2	+15.4	98	96	16%	−0.06
Slider8% use	8%	84.7	1.8	−4.9	102	113	19%	−3.20
Changeup5% use	5%	84.4	10.1	+15.5	101	116	10%	+1.30
Curveball3% use	3%	76.0	−10.5	−5.9	97	98	18%	+1.33

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

Most similar pitchers

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

Similarity	Player	Stuff	’26 WAR	’27 proj	2027
61	Foster Griffin CLE · ’95	100	2.6	1.8	Free agent
56	Brandon Williamson CIN · ’98	94	−0.1	0.0	Arb
32	Andrew Abbott CIN · ’99	100	1.4	2.0	Arb
28	Jose Quintana COL · ’89	84	−0.1	0.1	Free agent
26	Tyler Holton DET · ’96	96	0.3	0.3	Arb

Foster Griffin (similarity 61, 1.8 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

Cutter 32%

48% zone

Four-seam 26%

48% zone

Sweeper 13%

44% zone

Sinker 10%

56% zone

Slider 8%

29% zone

Changeup 7%

47% 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 1.0 WAR Pre-arb $780K*

2028 1.1 WAR Pre-arb $803K*

2029 1.2 WAR Pre-arb $828K*

2030 1.2 WAR Arbitration $2.8M*

* 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
2026AA	AA	Binghamton Rumble Ponies	24	5	25 IP	25 IP · 3.60 ERA · 25.7% K · 8.6% BB
2026AAA	AAA	Syracuse Mets	24	9	37.2 IP	37.2 IP · 4.30 ERA · 23.2% K · 11.0% BB
2025A+	A+	Brooklyn Cyclones	23	4	20.2 IP	20.2 IP · 0.44 ERA · 32.1% K · 2.6% BB
2025AA	AA	Binghamton Rumble Ponies	23	10	52 IP	52 IP · 2.60 ERA · 27.0% K · 4.6% BB

FanGraphs: FV 45 · ETA 2026. Public pitch tracking exists only at Triple-A and some Florida State League parks.

ABS challenges · 2026

Baseball Savant

As pitcher 50% 1/2 won · 0.0 runs