Players / Player profile
KC · P

Lucas Erceg

Age 31 B/T L/R 6′2″, 214 lb USA MLB debut 2023
40-man
  • Kansas City’s roster as it stands late-inning relief · 52 IP · 0.2 WAR in the role
  • Trade read Available at a price: KC 39% playoff odds; control through 2029.
Keystone Stuff 98 44th pct
2026 fWAR −0.5
Projected 2027 WAR 0.3 at 60 IP · 0.2 in his 2027 role

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 901 pitches

Keystone Stuff 98 Keystone Stuff: 98, 44th percentile
Keystone Location 92 Keystone Location: 92, 24th percentile
Keystone Pitching 91 Keystone Pitching: 91, 19th percentile
Run value (xRV) −0.29 Run value (xRV): −0.29, 29th percentile
Strikeout % 14.9% Strikeout %: 14.9%, 4th percentile
Walk % 14.0% Walk %: 14.0%, 5th percentile
Whiff % 20.9% Whiff %: 20.9%, 15th percentile
Chase % 28.4% Chase %: 28.4%, 29th percentile
Fastball velo 97.2 Fastball velo: 97.2, 87th percentile
Extension 6.6 ft Extension: 6.6 ft, 60th percentile
48.1 IP5.59 ERA5.40 FIP 43° arm13 SV

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

−20−20−10−100010102020← Glove sideArm side →Rise (IVB, in) →4SSISLCH
RHP · arm angle 43° · how to read
PitchUseVeloIVBHBStuffLocWhiffxRV/100
Four-seam29% use29%97.314.0+10.49410120%−0.70
Sinker28% use28%97.010.3+14.81039515%+0.78
Slider28% use28%84.7−2.4−1.21009028%+0.41
Changeup14% use14%89.65.8+16.9989321%−2.77

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

Most similar pitchers

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

SimilarityPlayerStuff’26 WAR’27 proj2027
57Gordon Graceffo STL · ’00910.60.6Pre-arb
53Victor Vodnik MIA · ’991090.20.4Arb
50Jonathan Loáisiga AZ · ’94971.10.4Free agent
46Kevin Ginkel AZ · ’94950.80.5Free agent
44Dennis Santana AZ · ’9689−0.30.3Free 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 33%
48% zone
Changeup 24%
38% zone
Slider 21%
29% zone
Sinker 19%
52% 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 Arbitration $1.1M*
2028 0.1 WAR Arbitration $2.1M*
2029 0.0 WAR Arbitration $3.1M*
2030 −0.1 WAR Free agent

* projected arbitration or minimum salary. Contract Studio →

Minor leagues

MLB Stats API · public box-score data

SeasonLevelLevelTeamAgeGPA / IPPA / IP ·Line
2026AAAAAAOmaha Storm Chasers31910.1 IP 10.1 IP · 1.74 ERA · 31.0% K · 7.1% BB
2025AAAAAAOmaha Storm Chasers3011 IP 1 IP · 0.00 ERA · 0.0% K · 0.0% BB
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.