Players / Player profile
MIL · P

Brandon Sproat

Age 26 B/T R/R 6′3″, 205 lb USA MLB debut 2025
40-man FV 50 · #3 in org
  • Milwaukee’s roster as it stands bullpen · 77 IP · 0.5 WAR in the role
Keystone Stuff 94 26th pct
2026 fWAR 0.1
Projected 2027 WAR 0.7 at 121 IP · 0.5 in his 2027 role

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 1,727 pitches

Keystone Stuff 94 Keystone Stuff: 94, 26th percentile
Keystone Location 90 Keystone Location: 90, 20th percentile
Keystone Pitching 89 Keystone Pitching: 89, 16th percentile
Run value (xRV) −0.50 Run value (xRV): −0.50, 19th percentile
Strikeout % 23.9% Strikeout %: 23.9%, 62nd percentile
Walk % 12.3% Walk %: 12.3%, 14th percentile
Whiff % 24.9% Whiff %: 24.9%, 48th percentile
Chase % 25.4% Chase %: 25.4%, 6th percentile
Fastball velo 96.4 Fastball velo: 96.4, 80th percentile
Extension 6.3 ft Extension: 6.3 ft, 38th percentile
97.0 IP5.57 ERA5.21 FIP 33° arm

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

−20−20−10−100010102020← Glove sideArm side →Rise (IVB, in) →SI4SFCSTCUCH
RHP · arm angle 33° · how to read
PitchUseVeloIVBHBStuffLocWhiffxRV/100
Sinker26% use26%96.15.4+15.2969017%+0.17
Four-seam25% use25%96.812.7+7.2879823%+0.08
Cutter21% use21%92.97.7−1.71019524%−0.76
Sweeper10% use10%86.23.3−13.21219940%−0.10
Curveball10% use10%83.0−11.3−10.8927932%−3.23
Changeup8% use8%91.32.8+14.4829632%−0.94
Weak pitch to watch

Curveball grades 92 with below-average expected results; his sweeper grades 121. Neither side has 60+ of each pitch. No mix change until it clears.

Most similar pitchers

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

SimilarityPlayerStuff’26 WAR’27 proj2027
58Sandy Alcantara MIA · ’95953.22.1Free agent
53Brayan Bello BOS · ’99851.01.4Signed $8.7M
48José Soriano TOR · ’98922.62.4Arb
46Michael King SD · ’95942.62.1Player option $28.0M
46J.T. Ginn ATH · ’99871.71.6Pre-arb

Sandy Alcantara (similarity 58, 2.1 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

Four-seam 31%
55% zone
Cutter 20%
46% zone
Sinker 19%
55% zone
Curveball 15%
17% zone
Changeup 13%
34% 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 —
2028 0.8 WAR —
2029 0.8 WAR —
2030 0.8 WAR —

Contract Studio →

Minor leagues

MLB Stats API · public box-score data

SeasonLevelLevelTeamAgeGPA / IPPA / IP ·Line
2026AAAAAANashville Sounds25822.1 IP 22.1 IP · 5.64 ERA · 31.7% K · 14.9% BB
2025AAAAAASyracuse Mets2426121 IP 121 IP · 4.24 ERA · 22.1% K · 10.4% BB

FanGraphs: FV 50 · ETA 2026 · #39 overall. Public pitch tracking exists only at Triple-A and some Florida State League parks.

Keystone is an independent portfolio project. It is not affiliated with Major League Baseball or any club. Data: MLB Stats API, Baseball Savant, FanGraphs. Used under their terms for individual, non-commercial use.