MIL · P

Aaron Ashby

Age 28 B/T R/L 6′0″, 194 lb USA MLB debut 2021

40-man

Milwaukee’s roster as it stands late-inning relief · 66 IP · 0.9 WAR in the role
Trade read Unlikely to be traded: MIL expects to contend (81% playoff odds) and he’s one of its best relievers.

Keystone Stuff 117 94th pct

2026 fWAR 1.5

Projected 2027 WAR 1.1 at 81 IP · 0.9 in his 2027 role

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 1,582 pitches

Keystone Stuff 117

Keystone Location 90

Keystone Pitching 103

Run value (xRV) +0.84

Strikeout % 30.3%

Walk % 10.7%

Whiff % 32.1%

Chase % 29.5%

Fastball velo 97.7

Extension 5.5 ft

89.1 IP3.12 ERA3.11 FIP 54° arm4 SV

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

LHP · arm angle 54° · how to read

Pitch	Use	Velo	IVB	HB	Stuff	Loc	Whiff	xRV/100
Sinker52% use	52%	97.7	8.4	+13.7	104	99	17%	+0.35
Curveball22% use	22%	83.7	−17.2	−7.0	132	89	52%	+1.53
Changeup12% use	12%	91.9	4.0	+13.3	104	83	49%	+0.54
Slider12% use	12%	85.1	−6.5	−8.9	119	92	57%	+2.91

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

Most similar pitchers

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

Similarity	Player	Stuff	’26 WAR	’27 proj	2027
27	DL Hall MIL · ’98	111	0.3	0.4	Arb
23	Erik Sabrowski CLE · ’97	111	1.2	0.8	Pre-arb
22	Erik Miller BOS · ’98	115	0.6	0.4	Arb
21	Grant Wolfram BAL · ’96	104	1.2	0.7	Pre-arb
17	Caleb Thielbar CHC · ’87	111	−0.2	0.1	Free agent

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 49%

50% zone

Curveball 28%

32% zone

Changeup 19%

20% 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 1.1 WAR Guaranteed $7.7M

2028 1.1 WAR Club option $9.0M

2029 1.0 WAR Club option $13.0M

2030 0.8 WAR Free agent

Contract Studio →

Minor leagues

MLB Stats API · public box-score data

SeasonLevel	Level	Team	Age	G	PA / IP	PA / IP ·Line
2025AAA	AAA	Nashville Sounds	27	4	6 IP	6 IP · 1.50 ERA · 16.0% K · 20.0% BB
2025ROK	ROK	ACL Brewers	27	1	1.1 IP	1.1 IP · 20.25 ERA · 11.1% K · 22.2% BB