P | Kansas City Royals
Bats/Throws: L/L | 6' 0" 220 lbs | Age: 26
W L ERA G GS SV IP SO WHIP
2023 3 3 4.85 15 3 0 42.2 36 1.27
2024 2 0 3.86 60 0 0 53.2 49 1.45
2025 5 2 4.18 69 2 0 64.2 58 1.38
5 Seasons 12 7 3.97 148 8 0 177 150 1.34
G W-L ERA IP SO WHIP
2023 15 3-3 4.85 42.2 36 1.27
2024 60 2-0 3.86 53.2 49 1.45
2025 69 5-2 4.18 64.2 58 1.38
5 Seasons 148 12-7 3.97 177 150 1.34
MLB Percentile Rankings
Movement Profile (Induced Break)
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Statcast Statistics

Season Age Pitches Batted
Balls
Barrels Barrel % Barrel/PA Exit
Velocity
Max EV Launch
Angle
LA Sweet-
Spot %
XBA XSLG WOBA XWOBA XWOBACON HardHit% K% BB% ERA xERA
2021 21 68 15 0 0.0 0.0 86.1 104.4 7.8 40.0 .271 .313 .194 .275 .324 26.7 20.0 5.0 0.00 3.17
2022 22 159 38 4 10.5 9.1 93.1 109.6 12.8 26.3 .329 .574 .282 .408 .419 55.3 6.8 6.8 1.64 7.59
2023 23 707 134 11 8.2 6.0 90.4 113.4 6.4 30.6 .263 .432 .335 .320 .372 45.5 19.8 4.4 4.85 4.33
2024 24 951 169 12 7.1 5.0 90.3 112.3 2.8 27.8 .260 .412 .323 .324 .375 43.8 20.4 8.3 3.86 4.43
2025 25 1099 193 16 8.3 5.8 89.5 111.2 0.0 30.6 .249 .396 .330 .311 .357 43.0 21.1 8.0 4.17 4.05
Player 2984 549 43 7.8 5.7 90.1 113.4 3.5 29.7 .261 .418 .323 .322 .370 44.3 19.7 7.1
MLB 7.2 4.9 88.6 122.9 12.4 33.3 .245 .404 .315 .315 .368 37.0 22.2 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Zerpa relies on 4 pitches.
Sinker
(44.6%) ,
Slider
(31.9%) ,
Four Seamer
(19.8%) ,
Changeup
(3.6%) ,


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Pitch Tracking



Batted Ball Profile

AIR: Fly Balls + Line Drives + Popups All Batted Balls Batted Ball Breakdown
Season GB % AIR % FB % LD % PU % Pull % Straight % Oppo % Pull GB % Straight GB % Oppo GB % Pull AIR % Straight AIR % Oppo AIR %
2021 46.7 53.3 20.0 33.3 0.0 40.0 20.0 40.0 26.7 13.3 6.7 13.3 6.7 33.3
2022 52.6 47.4 21.1 18.4 7.9 31.6 47.4 21.1 13.2 31.6 7.9 18.4 15.8 13.2
2023 50.7 49.3 20.1 22.4 6.7 38.8 35.8 25.4 25.4 19.4 6.0 13.4 16.4 19.4
2024 59.2 40.8 17.8 18.9 4.1 30.2 36.1 33.7 21.9 20.1 17.2 8.3 16.0 16.6
2025 63.7 36.3 16.1 18.1 2.1 37.3 37.3 25.4 27.5 26.9 9.3 9.8 10.4 16.1
Player 57.9 42.1 18.0 19.9 4.2 35.2 36.8 28.1 24.2 23.0 10.7 10.9 13.8 17.3
MLB 44.2 55.8 24.0 24.7 7.1 37.4 37.4 25.1 20.6 17.6 5.9 16.7 19.7 19.3
! Note: All figures in this table cover the period 2015-present.

Quality of Contact

Season Weak % Topped % Under % Flare/Burner % Solid % Barrel % Barrel/PA
2021 13.3 20.0 26.7 40.0 0.0 0.0 0.0
2022 7.9 31.6 18.4 26.3 5.3 10.5 9.1
2023 6.0 34.3 18.7 26.1 6.0 8.2 6.0
2024 4.1 44.4 17.2 24.3 2.4 7.1 5.0
2025 7.8 47.7 9.3 21.2 5.2 8.3 5.8
Player 6.4 41.5 15.1 24.2 4.4 7.8 5.7
MLB 4.0 32.4 24.9 24.4 5.9 7.2 4.9
! Note: All figures in this table cover the period 2015-present.

Pitch Movement


How this works: This section shows two different ways to evaluate pitch movement. On the left, “Total Movement” shows the real-world movement of a pitch, including the forces of gravity, which affects every pitch thrown. Since gravity requires time, and slower pitches aren't 'better' just because they have more time to move, a pitch's movement is compared to other pitches of the same pitch type, within +/- 2 MPH and +/- 0.5 feet of extension/release. On the right, Induced Movement (or IVB) is reported without gravity, and attempts to isolate movement created by the pitcher's ability to spin and manipulate the ball.
Total Movement (in inches, w/ gravity)Induced Movement (in inches, w/o gravity)
YearPitchTeamHand#MPHVertical
Drop
vs.
Comparable
Horizontal
Break
vs.
Comparable
Vertical
Break
vs. AvgHorizontal
Break
vs. Avg
2025 4-Seam Fastball KC L 218 96.2 17.8 -1.7 9.4ARM -1.3 11.8 -4.0 9.4ARM 1.3
2025 Changeup KC L 40 90.8 28.0 -2.9 13.5ARM -1.9 5.2 0.0 13.5ARM -0.7
2025 Slider KC L 351 85.1 44.6 7.2 6.1GLV 0.6 -6.9 8.9 6.1GLV 2.0
2025 Sinker KC L 490 96.6 25.6 1.0 16.4ARM -0.3 3.8 3.7 16.4ARM 1.0
2024 Curveball KC L 2 81.1 51.0 -1.2 11.4GLV 1.8 -9.6 1.1 11.4GLV 4.3
2024 Sinker KC L 416 96.4 25.0 0.1 16.5ARM 0.2 4.4 3.8 16.5ARM 1.4
2024 Changeup KC L 98 88.6 27.8 -3.0 13.4ARM -1.7 7.0 -1.1 13.4ARM -0.7
2024 4-Seam Fastball KC L 187 95.8 17.9 -2.4 9.7ARM 0.1 11.8 -3.9 9.7ARM 1.6
2024 Slider KC L 248 86.1 38.6 2.5 5.3GLV 0.5 -1.9 3.4 5.3GLV 0.5
! Note: Years are in reverse order.

Run Values by Pitch Type

Year Pitch Type Team RV/100 Run Value Pitches % PA BA SLG wOBA Whiff% K% PutAway % xBA xSLG xwOBA Hard Hit %
2025 Sinker 0.6 3 490 44.6 124 .305 .419 .369 8.9 16.9 14.8 .241 .334 .309 43.0
2025 Slider -1.0 -3 351 31.9 90 .217 .434 .315 21.1 25.6 18.9 .238 .440 .308 43.5
2025 4-Seam Fastball -0.3 -1 218 19.8 53 .255 .373 .288 22.9 24.5 16.3 .277 .447 .325 39.5
2025 Changeup -4.1 -2 40 3.6 8 .500 .750 .538 23.5 12.5 14.3 .283 .409 .295 57.1
2024 Sinker 0.5 2 416 43.7 133 .273 .355 .347 11.4 24.8 21.6 .242 .342 .291 47.2
2024 Slider 0.8 2 248 26.1 46 .214 .333 .261 21.2 15.2 9.3 .253 .417 .316 30.6
2024 4-Seam Fastball -1.2 -2 187 19.7 38 .294 .471 .367 14.7 13.2 13.9 .292 .446 .357 48.3
2024 Changeup -5.0 -5 98 10.3 20 .368 .737 .478 28.2 20.0 14.3 .335 .784 .483 46.7
2024 Curveball -3.0 0 2 0.2 -- -- -- -- -- 0.0 -- -- -- --
! Note: Years are in reverse order.
! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.

Spin Direction

Year Pitch Type Pitches MPH Active Spin % Total Movement (In.) Spin-Based Observed Deviation
2025 Changeup 38 90.8 93 14.8 10:00 9:30 30
2025 4-Seam Fastball 216 96.2 91 14.9 10:30 10:30 0
2025 Sinker 458 96.6 85 17.5 10:15 9:15 60
2025 Slider 351 85.1 59 11.1 4:15 4:45 -30
2024 Changeup 94 88.6 99 15.5 10:00 9:45 15
2024 4-Seam Fastball 181 95.8 90 15.2 10:30 10:30 0
2024 Sinker 343 96.4 84 17.7 10:15 9:15 60
2024 Slider 236 86.2 40 7.1 3:00 4:00 -60
! Note: Years are in reverse order.
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! Note: This table is showing data from the PITCHER perspective.
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Pitcher Arm Angle

! Note: Data is available from 2020 through the present.
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Statcast Pitching Run Value

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2021 20 68 1 2 -1 0 2
2022 44 159 3 1 -1 0 2
2023 182 707 0 6 -5 -3 -2
2024 237 951 -1 8 -7 -4 -3
2025 275 1,099 3 3 -4 -4 -3
Player 758 2,984 6 20 -19 6 -4
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Plate Discipline

Season Pitches Zone % Zone Swing % Zone Contact % Chase % Chase Contact % Edge % 1st Pitch Strike % Swing % Whiff % Meatball % Meatball Swing %
2021 68 50.0 61.8 90.5 26.5 77.8 36.8 55.0 44.1 13.3 11.8 62.5
2022 159 53.5 60.0 96.1 23.0 70.6 40.9 59.1 42.8 10.3 6.3 60.0
2023 707 52.6 71.8 86.5 25.1 59.5 40.0 61.0 49.6 19.9 8.3 86.4
2024 951 55.8 61.4 86.8 20.4 73.3 43.2 62.9 43.3 16.0 10.0 74.7
2025 1,099 54.7 57.1 91.5 26.7 63.2 45.3 64.4 43.3 16.4 8.7 65.6
Player 2,984 54.4 62.1 88.9 24.2 65.7 42.9 62.5 44.8 16.8 9.0 73.1
MLB 48.9 67.0 82.5 28.4 58.0 42.7 61.1 47.3 25.0 7.3 76.3
! Note: All figures in this table cover the period 2015-present.

Percentile Rankings

Year xwOBA /
xERA
xBA xSLG xISO xOBP Brl Brl% EV Hard
Hit%
K% BB% Whiff% Chase
Rate
FB
Velo
FB
Spin
CB
Spin
Extension
2022 52 19 3
2023 58 7 1
2024 27 20 30 47 25 72 63 14 11 28 45 1 1 84 12 2
2025 47 38 47 55 50 59 50 44 26 38 48 2 30 84 6 1
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Expected Home Runs

Adjusted

Year Team Avg HR Trot Actual HR xHR HR-xHR Doubters Mostly Gone No Doubters No Doubter %
2022 23.13 2 1.5 1 2 2 0 0.0
2023 21.74 7 6.1 1 4 5 2 28.6
2024 22.54 6 5.8 0 2 2 4 66.7
2025 23.89 7 6.8 0 7 4 3 42.9
Player 22.77 22 20.2 2 15 13 9 40.9
Note: xHR tells how many of this pitcher's batted balls allowed would have been out of other stadiums. The "Adjusted" view here accounts for different wall heights, distances and environmental effects using Statcast Park Factor data.
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Expected Home Runs by Park

Adjusted

Year HR
2022 2 1 2 0 2 2 2 0 1 1 1 2 2 1 2 3 1 1 1 1 1 3 3 1 1 1 2 3 1 2 2
2023 7 4 6 5 7 6 7 4 6 5 5 6 5 6 7 7 6 5 9 7 6 9 7 8 4 4 6 6 7 6 6
2024 6 5 5 5 6 6 6 4 5 5 6 5 8 6 5 5 6 5 5 6 6 5 7 7 6 5 5 8 7 7 7
2025 7 6 5 9 10 6 6 6 7 6 6 10 6 11 7 6 8 5 6 8 5 8 8 8 6 6 6 6 6 6 4
Player 22 16 18 19 25 20 21 14 19 17 18 23 21 24 21 21 21 16 21 22 18 25 25 24 17 16 19 23 21 21 19
Note: xHR tells how many of this pitcher's batted balls allowed would have been out of other stadiums. The "Adjusted" view here accounts for different wall heights, distances and environmental effects using Statcast Park Factor data.
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Year to Year Changes

2025 +/-   2024 +/-   2023 +/-   2022 +/-   2021
Results
BA .271 -.002 .273 +.001 .272 +.052 .220 +.044 .176
xBA .249 -.011 .260 -.003 .263 -.066 .329 +.058 .271
OBP .333 -.006 .339 +.020 .319 +.046 .273 +.062 .211
xOBP .314 -.015 .329 +.018 .311 -.064 .375 +.073 .302
SLG .425 +.022 .403 -.059 .462 +.096 .366 +.131 .235
xSLG .396 -.016 .412 -.020 .432 -.142 .574 +.261 .313
ISO .154 +.024 .130 -.059 .189 +.043 .146 +.087 .059
xISO .147 -.005 .152 -.017 .169 -.076 .245 +.203 .042
BABIP .326 -.001 .327 +.020 .307 +.113 .194 -.020 .214
wOBA .330 +.007 .323 -.012 .335 +.053 .282 +.088 .194
xwOBA .311 -.013 .324 +.004 .320 -.088 .408 +.133 .275
wOBACON .385 +.012 .373 -.018 .391 +.119 .272 +.058 .214
xwOBACON .357 -.018 .375 +.003 .372 -.047 .419 +.095 .324
BACON .351 .000 .351 +.008 .343 +.106 .237 +.023 .214
xBACON .323 -.014 .337 +.004 .333 -.022 .355 +.017 .338
Statcast Hit Metrics
Hard Hit % 43.0 -0.8 43.8 -1.7 45.5 -9.8 55.3 +28.6 26.7
Avg Exit Velocity 89.5 -0.8 90.3 -0.1 90.4 -2.7 93.1 +7.0 86.1
Launch Angle Sweet-Spot % 30.6 +2.8 27.8 -2.8 30.6 +4.3 26.3 -13.7 40.0
Barrel % 8.3 +1.2 7.1 -1.1 8.2 -2.3 10.5 +10.5 0.0
Avg Launch Angle 0.0 -2.8 2.8 -3.6 6.4 -6.4 12.8 +5.0 7.8
Statcast Bat Tracking
Bat Speed 70.6 +0.2 70.4 -1.2 71.6 -- -- -- --
Attack Angle -3° -- -- -- --
Ideal Attack Angle % 43.0 +0.7 42.3 -2.7 45.0 -- -- -- --
Attack Direction +4° -- -- -- --
Swing Path - Tilt 32° -1° 33° 33° -- -- -- --
Swing Length 7.0 +0.1 6.9 -0.3 7.2 -- -- -- --
Statcast Pitch Metrics
Fastball Velocity 96.5 +0.2 96.3 +1.8 94.5 +0.5 94.0 0.0 94.0
Breaking Velocity 85.1 -1.0 86.1 -0.1 86.2 +2.7 83.5 +0.3 83.2
Offspeed Velocity 90.8 +2.2 88.6 +1.7 86.9 -0.1 87.0 +0.8 86.2
Batted Ball Results
Barrels 16 +4 12 +1 11 +7 4 +4 0
Popup % 2.1 -2.0 4.1 -2.6 6.7 -1.2 7.9 +7.9 0.0
Flyball % 16.1 -1.7 17.8 -2.3 20.1 -1.0 21.1 +1.1 20.0
Line Drive % 18.1 -0.8 18.9 -3.5 22.4 +4.0 18.4 -14.9 33.3
Groundball % 63.7 +4.5 59.2 +8.5 50.7 -1.9 52.6 +5.9 46.7
Pull % 37.3 +7.1 30.2 -8.6 38.8 +7.2 31.6 -8.4 40.0
Straight Away % 37.3 +1.2 36.1 +0.3 35.8 -11.6 47.4 +27.4 20.0
Opposite Field % 25.4 -8.3 33.7 +8.3 25.4 +4.3 21.1 -18.9 40.0
Weak Contact % 7.8 +3.7 4.1 -1.9 6.0 -1.9 7.9 -5.4 13.3
Pull Airball % 9.8 +1.5 8.3 -5.1 13.4 -5.0 18.4 +5.1 13.3
Topped Contact % 47.7 +3.3 44.4 +10.1 34.3 +2.7 31.6 +11.6 20.0
Under Contact % 9.3 -7.9 17.2 -1.5 18.7 +0.3 18.4 -8.3 26.7
Flare/Burner Contact % 21.2 -3.1 24.3 -1.8 26.1 -0.2 26.3 -13.7 40.0
Solid Contact % 5.2 +2.8 2.4 -3.6 6.0 +0.7 5.3 +5.3 0.0
HR/FB % 22.6 +2.6 20.0 -5.9 25.9 +0.9 25.0 +25.0 0.0
Popups 4 -3 7 -2 9 +6 3 +3 0
Flyballs 31 +1 30 +3 27 +19 8 +5 3
Line Drives 35 +3 32 +2 30 +23 7 +2 5
Groundballs 123 +23 100 +32 68 +48 20 +13 7
Plate Discipline
In Zone % 54.7 -1.1 55.8 +3.2 52.6 -0.9 53.5 +3.5 50.0
Out of Zone % 45.3 +1.1 44.2 -3.2 47.4 +0.9 46.5 -3.5 50.0
Edge % 45.3 +2.1 43.2 +3.2 40.0 -0.9 40.9 +4.1 36.8
Zone Swing % 57.1 -4.3 61.4 -10.4 71.8 +11.8 60.0 -1.8 61.8
Out of Zone Swing % 26.7 +6.3 20.4 -4.7 25.1 +2.1 23.0 -3.5 26.5
In Zone Contact % 91.5 +4.7 86.8 +0.3 86.5 -9.6 96.1 +5.6 90.5
Out of Zone Contact % 63.2 -10.1 73.3 +13.8 59.5 -11.1 70.6 -7.2 77.8
Whiff % 16.4 +0.4 16.0 -3.9 19.9 +9.6 10.3 -3.0 13.3
First Strike % 64.4 +1.5 62.9 +1.9 61.0 +1.9 59.1 +4.1 55.0
First Pitch Swing % 25.1 -4.9 30.0 -1.3 31.3 +10.8 20.5 -4.5 25.0
Swing % 43.3 0.0 43.3 -6.3 49.6 +6.8 42.8 -1.3 44.1
Meatball Swing % 65.6 -9.1 74.7 -11.7 86.4 +26.4 60.0 -2.5 62.5
Meatball % 8.7 -1.3 10.0 +1.7 8.3 +2.0 6.3 -5.5 11.8
Zone Swing & Miss % 8.5 -4.7 13.2 -0.3 13.5 +9.6 3.9 -5.6 9.5
Out of Zone Swing & Miss % 36.8 +10.1 26.7 -13.8 40.5 +11.1 29.4 +7.2 22.2
In Zone 601 +70 531 +159 372 +287 85 +51 34
Out of Zone 498 +77 421 +86 335 +261 74 +40 34
Edge 498 +87 411 +128 283 +218 65 +40 25
In Zone Swings 343 +17 326 +59 267 +216 51 +30 21
Out of Zone Swings 133 +47 86 +2 84 +67 17 +8 9
In Zone Swing & Misses 29 -14 43 +7 36 +34 2 0 2
Out of Zone Swing & Misses 49 +26 23 -11 34 +29 5 +3 2
Basic
Pitches 1,099 +148 951 +244 707 +548 159 +91 68
PA 275 +35 240 +58 182 +138 44 +24 20
AB 247 +31 216 +47 169 +128 41 +24 17
Hits 67 +8 59 +13 46 +37 9 +6 3
Singles 43 -1 44 +16 28 +21 7 +5 2
Doubles 17 +9 8 -3 11 +11 0 -1 1
Triples 0 -1 1 +1 0 0 0 0 0
Home Runs 7 +1 6 -1 7 +5 2 +2 0
Walks 22 +2 20 +12 8 +5 3 +2 1
Strikeouts 58 +9 49 +13 36 +33 3 -1 4
K% 21.1 +0.7 20.4 +0.6 19.8 +13.0 6.8 -13.2 20.0
BB% 8.0 -0.3 8.3 +3.9 4.4 -2.4 6.8 +1.8 5.0
HBP 2 0 2 -2 4 +4 0 0 0
Batted Balls 193 +24 169 +35 134 +96 38 +23 15
Number of Fastballs 708 +105 603 +202 401 +307 94 +48 46
Number of Offspeed 40 -58 98 -39 137 +113 24 +18 6
Number of Breaking 351 +101 250 +81 169 +128 41 +25 16
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2021 Shifts 20 .194 15 0 0.0 5 2 40.0
2022 Shifts 44 .282 38 2 5.3 6 4 66.7
2023 Shades 182 .335 134 1 0.7 48 16 33.3
2024 Shades 235 .321 136 1 0.7 99 18 18.2
2025 Shades 275 .330 161 0 0.0 114 28 24.6
! Note: Shifts are through the 2022 season, Shaded starting from the 2023 season, Shift: three or more infielders are on the same side of second base, Shade: positioned outside of their typical responsible slices of the field.
Learn more about how positioning is defined here

Pitch Tempo

Bases EmptyRunners On Base
SeasonTeamPitchesTempoFast %Slow %PitchesTempoFast %Slow %
2021 18 15.0 50.0% 0.0% 11 25.8 0.0% 36.4%
2022 59 14.9 50.8% 0.0% 20 20.4 0.0% 0.0%
2023 184 14.1 64.7% 0.0% 119 19.3 2.5% 0.0%
2024 229 14.5 59.4% 0.4% 232 18.5 3.9% 2.6%
2025 314 15.4 42.7% 0.3% 203 17.5 12.8% 0.5%

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Pitch Distribution