MIA · P

Michael Petersen

Age 32 B/T R/R 6′7″, 195 lb United Kingdom MLB debut 2024

40-man

Miami’s roster as it stands late-inning relief · 59 IP · 0.6 WAR in the role
Trade read Available at a price: MIA 38% playoff odds; control through 2031.

Keystone Stuff 115 90th pct

2026 fWAR 1.5

Projected 2027 WAR 0.6 at 64 IP · 0.6 in his 2027 role

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 1,129 pitches

Keystone Stuff 115

Keystone Location 95

Keystone Pitching 103

Run value (xRV) +0.95

Strikeout % 30.1%

Walk % 10.8%

Whiff % 30.1%

Chase % 33.8%

Fastball velo 98.0

Extension 6.2 ft

65.2 IP3.02 ERA3.13 FIP 52° arm1 SV

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

RHP · arm angle 52° · how to read

Pitch	Use	Velo	IVB	HB	Stuff	Loc	Whiff	xRV/100
Four-seam61% use	61%	98.0	19.4	+7.6	109	96	27%	+0.96
Slider27% use	27%	87.8	−1.0	−1.2	113	102	40%	+1.01
Changeup12% use	12%	89.8	8.0	+9.8	106	89	27%	+0.80

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

Most similar pitchers

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

Similarity	Player	Stuff	’26 WAR	’27 proj	2027
69	Jonathan Bowlan PHI · ’96	114	0.8	0.5	Pre-arb
61	Ryne Stanek STL · ’91	102	0.0	−0.1	Free agent
57	Trevor Megill MIL · ’93	121	2.5	1.5	Arb
49	Kyle Finnegan DET · ’91	106	−0.8	0.0	Signed $8.0M
44	Luis Medina ATH · ’99	103	0.9	0.6	Arb

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 62%

44% zone

Slider 24%

40% zone

Changeup 14%

39% 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 0.6 WAR Pre-arb $780K*

2028 0.5 WAR Pre-arb $803K*

2029 0.3 WAR Arbitration $1.9M*

2030 0.1 WAR Arbitration $2.6M*

* 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	Jacksonville Jumbo Shrimp	31	33	36.1 IP	36.1 IP · 4.46 ERA · 29.2% K · 7.5% BB