PIT · P

Brandon Eisert

Age 28 B/T L/L 6′2″, 210 lb USA MLB debut 2024

Pittsburgh org 40-man

Winter Plan bullpen · 52 IP · 0.2 WAR in the role
Decision Brief 2027 starter hook and bullpen roles (due Spring training, medium confidence)

Keystone Stuff 92 18th pct

2026 fWAR 0.4

Projected 2027 WAR 0.3 at 59 IP · 0.2 in his 2027 role

Development · trends & plan

Tracked levels only. Monthly values; gaps mark the offseason. The number beside each line is its last month, with that month’s sample (faded under 50 PA or 150 pitches), not the season.

Trends · MLB

Fastball velo 90.0 mph Sep ’26 · 144 pitches Jul ’24 – Sep ’26

Stuff 98 Sep ’26 · 144 pitches Jul ’24 – Sep ’26

Location 80 Sep ’26 · 144 pitches Jul ’24 – Sep ’26

Whiff rate 32% Sep ’26 · 144 pitches Jul ’24 – Sep ’26

Zone rate 45% Sep ’26 · 144 pitches Jul ’24 – Sep ’26

Walk rate 5.6% Sep ’26 · 36 PA Jul ’24 – Sep ’26

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 784 pitches

Keystone Stuff 92

Keystone Location 97

Keystone Pitching 93

Run value (xRV) +0.24

Strikeout % 25.9%

Walk % 7.4%

Whiff % 30.6%

Chase % 29.8%

Fastball velo 89.9

Extension 7.2 ft

44.0 IP5.52 ERA3.67 FIP 34° arm

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

Stuff landscape

LHP · arm angle 34° · how to read

Pitch	Use	Velo	IVB	HB	Stuff	Loc	Whiff	xRV/100
Four-seam40% use	40%	90.0	15.3	+7.0	94	101	28%	+0.69
Slider35% use	35%	83.9	1.7	−5.5	96	109	34%	+0.96
Changeup19% use	19%	84.8	4.1	+12.2	92	81	32%	−1.53
Sinker7% use	7%	89.1	9.5	+15.1	97	67	20%	−1.21

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

Most similar pitchers

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

Similarity	Player	Stuff	’26 WAR	’27 proj	2027
40	Brent Headrick NYY · ’97	101	2.1	1.2	Pre-arb
34	José Suarez ATH · ’98	95	0.6	0.4	Free agent
32	Ian Seymour TB · ’98	96	1.5	1.1	Pre-arb
31	Jose Quintana COL · ’89	84	−0.1	0.1	Free agent
30	David Peterson CHC · ’95	90	1.7	1.9	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

Four-seam 42%

42% zone

Changeup 32%

23% zone

Slider 26%

38% 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 0.3 WAR Pre-arb (est.) $780K*

2028 0.2 WAR Arbitration (est.) $1.5M*

2029 0.1 WAR Arbitration (est.) $1.7M*

2030 0.0 WAR Arbitration (est.) $1.7M*

* Estimated: RosterResource has no contract row for him, so control through 2030 estimated from his MLB debut (2024-06-17): six years of service at the earliest; he isn’t in the contract data, and time in the minors would add seasons; pre-arbitration years at the minimum, arbitration years from Keystone’s arbitration model. Contract Studio →

Minor leagues

MLB Stats API · public box-score data

SeasonLevel	Level	Team	Age	G	PA / IP	PA / IP ·Line
2026AAA	AAA	Indianapolis Indians	28	23	27 IP	27 IP · 4.00 ERA · 27.3% K · 6.4% BB
2025AAA	AAA	Charlotte Knights	27	2	2 IP	2 IP · 4.50 ERA · 37.5% K · 12.5% BB