TEX · P

Trevor Williams

Age 34 B/T R/R 6′3″, 231 lb USA MLB debut 2016

40-man

Free agent est. 1 yr × $6.6M ($3M–$13M) · +0.5 wins to Pittsburgh’s Winter Plan as rotation depth
Injured list 2026: Right elbow sprain (carried over from 2025; no reason given) (Feb 10–Jul 29)

Keystone Stuff 94 25th pct

2026 fWAR 0.2

Projected 2027 WAR 0.7 Keystone Marcel+ at 75 IP

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 514 pitches

Keystone Stuff 94

Keystone Location 100

Keystone Pitching 89

Run value (xRV) +0.18

Strikeout % 28.3%

Walk % 8.3%

Whiff % 27.9%

Chase % 30.9%

Fastball velo 89.4

Extension 6.7 ft

28.2 IP3.14 ERA3.80 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-seam39% use	39%	89.8	10.9	+4.4	98	112	25%	+0.32
Sweeper26% use	26%	78.4	7.9	−8.5	107	111	35%	+2.39
Sinker16% use	16%	88.4	3.2	+14.6	85	55	14%	−3.04
Changeup11% use	11%	81.3	−0.1	+13.2	84	100	43%	+0.89
Slider7% use	7%	82.7	4.1	−5.4	87	91	13%	−2.93

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

Most similar pitchers

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

Similarity	Player	Stuff	’26 WAR	’27 proj	2027
47	Ryan Johnson LAA · ’02	97	0.1	0.4	—
46	Grant Anderson MIL · ’97	96	0.2	0.1	Arb
44	Paul Sewald TOR · ’90	103	−0.5	−0.1	Free agent
39	Kai-Wei Teng HOU · ’98	93	0.2	0.3	—
37	Ryan Watson LAA · ’97	98	0.7	0.5	—

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 37%

55% zone

Sweeper 32%

32% zone

Sinker 21%

30% 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 0.7 WAR Free agent

2028 0.5 WAR Free agent

2029 0.2 WAR Free agent

2030 0.0 WAR Free agent

A pending free agent: no club controls his 2027. Contract Studio →

Minor leagues

MLB Stats API · public box-score data

SeasonLevel	Level	Team	Age	G	PA / IP	PA / IP ·Line
2026A	A	Fredericksburg Nationals	34	1	0.2 IP	0.2 IP · 27.00 ERA · 14.3% K · 0.0% BB
2026A+	A+	Wilmington Blue Rocks	34	1	3.1 IP	3.1 IP · 8.10 ERA · 17.6% K · 11.8% BB
2026AA	AA	Harrisburg Senators	34	1	2.1 IP	2.1 IP · 0.00 ERA · 25.0% K · 0.0% BB
2026AAA	AAA	Rochester Red Wings	34	2	7 IP	7 IP · 7.71 ERA · 21.9% K · 3.1% BB
2026ROK	ROK	FCL Nationals	34	1	2 IP	2 IP · 0.00 ERA · 50.0% K · 10.0% BB