BOS · P

Erik Miller

Age 28 B/T L/L 6′5″, 269 lb USA MLB debut 2024

40-man

Boston’s roster as it stands late-inning relief · 52 IP · 0.4 WAR in the role
Injured list 2026: Low back strain (May 4–May 16)
Trade read Available at a price: BOS 76% playoff odds; control through 2029.

Keystone Stuff 115 92nd pct

2026 fWAR 0.6

Projected 2027 WAR 0.4 at 59 IP · 0.4 in his 2027 role

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 970 pitches

Keystone Stuff 115

Keystone Location 92

Keystone Pitching 105

Run value (xRV) +0.44

Strikeout % 32.6%

Walk % 15.0%

Whiff % 34.7%

Chase % 27.2%

Fastball velo 96.8

Extension 6.6 ft

51.1 IP2.98 ERA3.26 FIP 39° arm5 SV

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

LHP · arm angle 39° · how to read

Pitch	Use	Velo	IVB	HB	Stuff	Loc	Whiff	xRV/100
Sinker49% use	49%	96.8	8.6	+17.4	115	96	19%	+0.60
Slider41% use	41%	85.6	−0.7	−4.1	110	102	53%	+1.29
Four-seam6% use	6%	96.8	15.3	+9.2	71	43	22%	−4.02
Changeup4% use	4%	87.7	3.8	+16.1	104	69	25%	−4.07

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

Most similar pitchers

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

Similarity	Player	Stuff	’26 WAR	’27 proj	2027
61	Gregory Soto PIT · ’95	110	1.3	0.8	Free agent
48	Grant Wolfram BAL · ’96	104	1.2	0.7	Pre-arb
40	DL Hall MIL · ’98	111	0.3	0.4	Arb
37	Tanner Scott LAD · ’94	124	2.4	1.1	Signed $20.0M
33	Brock Burke CIN · ’96	100	0.8	0.5	Free agent

Gregory Soto (similarity 61, 0.8 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

Sinker 48%

46% zone

Slider 39%

30% zone

Four-seam 7%

7% 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 0.4 WAR Arbitration $1.6M*

2028 0.4 WAR Arbitration $2.2M*

2029 0.3 WAR Arbitration $2.3M*

2030 0.2 WAR Free agent

* 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
2026A	A	San Jose Giants	28	1	1 IP	1 IP · 0.00 ERA · 50.0% K · 0.0% BB
2026AAA	AAA	Sacramento River Cats	28	1	1 IP	1 IP · 0.00 ERA · 25.0% K · 0.0% BB
2025AAA	AAA	Sacramento River Cats	27	4	3 IP	3 IP · 6.00 ERA · 29.4% K · 11.8% BB

ABS challenges · 2026

Baseball Savant

As pitcher 0% 0/1 won · 0.0 runs