Jonathan Heasley
P | Bats/Throws: R/R | 6' 3" 225LBS | Age: 27
Draft: 2018 | Rd: 13, #392, Kansas City Royals | Oklahoma State
W L ERA G GS SV IP SO WHIP
2022 4 10 5.28 21 21 0 104 70 1.49
2023 0 0 7.20 12 0 0 15 9 1.27
2024 0 1 16.88 4 0 0 5.1 4 2.44
4 Seasons 5 12 5.89 40 24 0 139 89 1.47
G W-L ERA IP SO WHIP
2022 21 4-10 5.28 104 70 1.49
2023 12 0-0 7.20 15 9 1.27
2024 4 0-1 16.88 5.1 4 2.44
4 Seasons 40 5-12 5.89 139 89 1.47
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 24 250 48 6 12.5 10.2 92.2 110.9 15.7 22.9 .295 .584 .371 .397 .415 56.3 10.2 5.1 4.91 7.21
2022 25 1796 342 32 9.4 6.9 90.2 112.5 14.9 34.8 .268 .456 .355 .353 .373 45.3 15.1 10.1 5.28 5.35
2023 26 221 51 6 11.8 9.5 89.7 110.1 18.2 52.9 .343 .634 .383 .424 .484 37.3 14.3 3.2 7.20 8.48
2024 27 108 21 2 9.5 6.9 92.2 108.0 4.8 23.8 .320 .554 .481 .415 .441 57.1 13.8 10.3 16.88 7.82
Player 2375 462 46 10.0 7.5 90.5 112.5 14.9 35.1 .281 .492 .366 .368 .393 46.1 14.4 8.9
MLB 7.0 4.8 88.5 122.4 12.3 33.2 .245 .406 .316 .315 .369 36.5 22.2 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Heasley relies on 4 pitches.
Sweeper
(34.3%) ,
Slider
(23.1%) ,
Curveball
(23.1%) ,
Four Seamer
(19.4%) ,


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Pitch Tracking



Batted Ball Profile

Season GB % FB % LD % PU % Pull % Straight % Oppo % Weak % Topped % Under % Flare/Burner % Solid % Barrel % Barrel/PA
2021 45.8 20.8 18.8 14.6 35.4 41.7 22.9 2.1 25.0 29.2 27.1 4.2 12.5 10.2
2022 37.1 28.9 26.0 7.9 41.5 34.2 24.3 4.1 25.7 30.4 22.5 7.9 9.4 6.9
2023 25.5 33.3 35.3 5.9 51.0 21.6 27.5 2.0 21.6 29.4 23.5 9.8 11.8 9.5
2024 61.9 19.0 19.0 0.0 61.9 28.6 9.5 0.0 57.1 4.8 23.8 4.8 9.5 6.9
Player 37.9 28.1 26.0 8.0 42.9 33.3 23.8 3.5 26.6 29.0 23.2 7.6 10.0 7.5
MLB 44.4 23.8 24.7 7.1 37.2 37.5 25.2 3.9 32.6 24.8 24.4 5.9 7.0 4.8
! Note: All figures in this table cover the period 2015-present.

Pitch Movement

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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
2024 4-Seam Fastball BAL R 21 93.1 13.0 2.1 4.4ARM -2.4 18.7 3.0 4.4ARM -3.1
2024 Slider BAL R 25 86.8 31.0 -3.3 2.0GLV -2.1 5.4 -3.8 2.0GLV -3.1
2024 Sweeper BAL R 37 82.0 41.7 1.9 11.0GLV -2.8 -0.9 2.5 11.0GLV -3.3
2024 Curveball BAL R 25 79.7 59.8 6.8 5.9GLV -2.3 -16.5 6.6 5.9GLV -3.5
2023 Slider KC R 1 82.5 42.8 3.8 4.3GLV -2.3 -3.1 4.6 4.3GLV -1.0
2023 Curveball KC R 47 79.8 58.2 5.0 6.8GLV -1.4 -14.9 5.0 6.8GLV -2.1
2023 Changeup KC R 23 86.0 29.4 -1.5 13.3ARM -1.0 7.5 -2.1 13.3ARM -1.1
2023 Sweeper KC R 51 83.2 40.6 1.7 12.0GLV -1.8 -1.0 2.5 12.0GLV -2.1
2023 4-Seam Fastball KC R 99 94.7 13.0 1.5 8.0ARM 0.7 17.5 1.7 8.0ARM 0.6
2022 Slider KC R 223 85.6 34.0 -1.5 3.3GLV -1.7 3.3 -1.5 3.3GLV -2.4
2022 Changeup KC R 380 84.9 27.7 -3.1 12.9ARM -1.1 10.4 -4.5 12.9ARM -1.3
2022 Curveball KC R 306 78.5 60.3 4.9 6.1GLV -2.4 -15.5 5.6 6.1GLV -3.0
2022 4-Seam Fastball KC R 826 93.4 12.5 2.3 8.2ARM 1.4 19.0 2.8 8.2ARM 0.9
2022 Sinker KC R 53 92.9 13.6 -8.0 12.0ARM -2.5 18.4 -10.1 12.0ARM -2.8
2021 4-Seam Fastball KC R 109 93.5 13.8 1.2 9.1ARM 2.1 17.6 1.4 9.1ARM 1.9
2021 Slider KC R 1 91.6 20.2 -8.3 5.7ARM -7.0 12.0 -10.2 5.7ARM -11.4
2021 Changeup KC R 59 85.1 27.2 -3.1 12.7ARM -1.2 10.6 -4.3 12.7ARM -1.2
2021 Curveball KC R 67 80.0 55.0 2.3 5.6GLV -2.1 -12.1 2.0 5.6GLV -3.6
2021 Sinker KC R 14 93.7 15.2 -5.9 12.7ARM -2.1 16.2 -7.4 12.7ARM -2.1
! Note: Years are in reverse order.
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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 %
2024 Sweeper 0.1 0 37 34.3 10 .125 .125 .230 38.5 30.0 18.8 .255 .340 .343 40.0
2024 Slider -1.8 0 25 23.1 4 .500 .500 .575 25.0 0.0 0.0 .262 .286 .469 50.0
2024 Curveball 0.4 0 25 23.1 5 .200 .200 .360 25.0 20.0 12.5 .163 .177 .148 75.0
2024 4-Seam Fastball -31.3 -7 21 19.4 10 .700 1.300 .850 0.0 0.0 0.0 .464 .968 .601 60.0
2023 4-Seam Fastball -1.2 -1 99 44.8 28 .231 .462 .321 20.8 17.9 20.8 .301 .550 .384 33.3
2023 Sweeper -5.4 -3 51 23.1 15 .286 .786 .457 33.3 20.0 21.4 .300 .693 .429 27.3
2023 Curveball 0.6 0 47 21.3 12 .167 .333 .227 18.5 8.3 5.3 .348 .537 .375 36.4
2023 Changeup -10.0 -2 23 10.4 8 .714 1.286 .744 26.7 0.0 0.0 .572 .978 .622 62.5
2023 Slider 3.8 0 1 0.5 -- -- -- 0.0 -- -- -- -- -- --
2022 4-Seam Fastball -0.6 -5 829 46.2 216 .281 .562 .410 13.8 13.4 14.1 .260 .488 .375 45.8
2022 Changeup -1.4 -5 383 21.3 100 .253 .418 .327 24.6 18.0 14.6 .236 .367 .298 33.8
2022 Curveball -2.2 -7 306 17.0 71 .234 .359 .305 25.6 19.7 15.6 .305 .498 .366 57.7
2022 Slider 0.0 0 225 12.5 64 .254 .424 .326 21.0 7.8 6.0 .277 .410 .329 43.6
2022 Sinker -1.7 -1 53 3.0 14 .417 .583 .471 26.1 28.6 36.4 .382 .664 .486 75.0
2021 4-Seam Fastball -0.5 -1 109 43.6 29 .333 .556 .402 6.0 6.9 6.3 .331 .650 .431 68.0
2021 Curveball -1.2 -1 67 26.8 13 .273 .636 .427 20.0 23.1 11.5 .235 .565 .388 50.0
2021 Changeup -0.3 0 59 23.6 15 .214 .500 .323 15.2 6.7 4.0 .305 .545 .384 38.5
2021 Sinker 4.2 1 14 5.6 2 .000 .000 .000 25.0 0.0 0.0 .063 .063 .067 50.0
2021 Slider -4.8 0 1 0.4 -- -- -- -- -- -- -- -- -- --
! Note: Years are in reverse order.
! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.
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Spin Direction

Year Pitch Type Pitches MPH Active Spin % Total Movement (In.) Spin-Based Observed Deviation
2024 Curveball 25 79.7 77 20.4 6:45 6:30 15
2024 4-Seam Fastball 21 93.1 95 18.7 12:45 12:30 15
2024 Slider 25 86.8 30 5.2 10:45 11:00 -15
2024 Sweeper 37 82.0 52 12.2 8:00 8:30 -30
2023 Changeup 23 86.0 98 15.4 2:00 2:15 -15
2023 Curveball 46 79.9 84 19.2 7:00 6:45 15
2023 4-Seam Fastball 97 94.7 97 19.0 1:00 1:00 0
2023 Sweeper 51 83.2 53 13.3 8:00 8:30 -30
2022 Changeup 379 84.9 95 16.4 1:45 1:45 0
2022 Curveball 305 78.5 79 19.6 7:00 6:45 15
2022 4-Seam Fastball 826 93.4 99 20.3 12:45 12:45 0
2022 Sinker 53 92.9 99 21.7 1:00 1:15 -15
2022 Slider 222 85.6 30 4.9 10:00 9:45 15
2021 Changeup 59 85.1 96 16.5 1:45 1:45 0
2021 Curveball 67 80.0 70 15.9 7:15 6:45 30
2021 4-Seam Fastball 109 93.5 99 19.5 1:00 1:00 0
2021 Sinker 14 93.7 99 20.4 1:00 1:15 -15
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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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Swing/Take

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2021 59 250 0 2 -1 -2 -1
2022 465 1,796 -7 14 -16 -9 -18
2023 63 221 -3 0 -2 -1 -6
2024 29 108 -3 -2 -1 -1 -7
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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 250 46.8 70.1 91.5 22.6 76.7 39.6 64.4 44.8 12.5 6.8 76.5
2022 1,796 48.6 69.0 85.5 24.4 65.8 44.8 55.9 46.0 19.3 7.2 82.3
2023 221 50.7 72.3 82.7 31.2 58.8 42.5 61.9 52.0 23.5 6.8 80.0
2024 108 50.9 63.6 88.6 20.8 36.4 42.6 62.1 42.6 21.7 8.3 66.7
Player 2,375 48.7 69.1 86.0 24.6 65.0 43.9 57.6 46.3 19.2 7.2 80.7
MLB 48.7 67.0 82.0 28.5 57.8 42.6 61.0 47.2 24.9 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
2021 48 60 72 25
2022 6 12 8 10 7 18 16 10 6 6 20 8 6 40 73 69 42
2023 63 75 35
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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 %
2021 22.6 3 3.6 -1 4 1 2 66.7
2022 23.4 19 17.2 2 8 21 2 10.5
2023 24.5 5 4.3 1 0 2 3 60.0
2024 25.8 2 2.0 0 0 1 1 50.0
Player 23.7 29 27.0 2 12 25 8 27.6
Note: xHR tells how many of this pitcher's home runs 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
2021 3 4 4 5 4 3 4 4 2 3 3 6 3 3 3 5 3 3 3 3 3 4 4 3 4 3 6 3 3 3 4
2022 19 15 9 21 20 18 22 15 10 14 12 17 22 18 18 23 18 16 15 17 17 15 24 18 15 12 18 22 20 18 17
2023 5 4 4 4 4 4 4 5 4 4 4 4 4 4 5 4 5 5 5 4 5 4 5 5 3 4 4 4 5 4 4
2024 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1
Player 29 25 19 32 30 27 32 26 18 23 21 29 31 27 28 34 28 26 25 26 27 25 35 28 24 21 30 31 30 27 26
Note: xHR tells how many of this pitcher's home runs 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

Metric 2021 2022 +/-   2023 +/-   2024 +/-  
Fastball Velocity 93.5 93.3 -0.2 ↓ 94.7 1.4 ↑ 93.1 -1.6 ↓
Offspeed Velocity 85.1 84.9 -0.2 ↓ 86.0 1.1 ↑ 0.0 0.0
Breaking Velocity 80.2 81.5 1.3 ↑ 81.6 0.1 ↑ 82.7 1.1 ↑
Exit Velocity 92.2 90.2 -2.0 ↓ 89.7 -0.5 ↓ 92.2 2.5 ↑
Launch Angle 15.7 14.9 -0.8 ↓ 18.2 3.3 ↑ 4.8 -13.4 ↓
Barrel % 12.5 9.4 -3.1 ↓ 11.8 2.4 ↑ 9.5 -2.3 ↓
Hard Hit % 56.3 45.3 -11.0 ↓ 37.3 -8.0 ↓ 57.1 19.8 ↑
LA Sweet-Spot % 22.9 34.8 11.9 ↑ 52.9 18.1 ↑ 23.8 -29.1 ↓
xBA .295 .268 -0.027 ↓ .343 0.075 ↑ .320 -0.023 ↓
BA .278 .267 -0.011 ↓ .288 0.021 ↑ .400 0.112 ↑
xwOBA .397 .353 -0.044 ↓ .424 0.071 ↑ .415 -0.009 ↓
wOBA .371 .355 -0.016 ↓ .383 0.028 ↑ .481 0.098 ↑
xSLG .584 .456 -0.128 ↓ .634 0.178 ↑ .554 -0.080 ↓
SLG .537 .478 -0.059 ↓ .610 0.132 ↑ .640 0.030 ↑
K% 10.2 15.1 4.9 ↑ 14.3 -0.8 ↓ 13.8 -0.5 ↓
BB% 5.1 10.1 5.0 ↑ 3.2 -6.9 ↓ 10.3 7.1 ↑
Swing % 44.8 46.0 1.2 ↑ 52.0 6.0 ↑ 42.6 -9.4 ↓
Whiff% 12.5 19.3 6.8 ↑ 23.5 4.2 ↑ 21.7 -1.8 ↓
In Zone % 46.8 48.6 1.8 ↑ 50.7 2.1 ↑ 50.9 0.2 ↑
Out of Zone % 53.2 51.4 -1.8 ↓ 49.3 -2.1 ↓ 49.1 -0.2 ↓
Out of Zone Swing % 22.6 24.4 1.8 ↑ 31.2 6.8 ↑ 20.8 -10.4 ↓
First Pitch Swing % 39.0 28.8 -10.2 ↓ 38.1 9.3 ↑ 24.1 -14.0 ↓
First Pitch Strike % 64.4 55.9 -8.5 ↓ 61.9 6.0 ↑ 62.1 0.2 ↑
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2021 Shifts 59 .371 27 2 7.4 32 18 56.3
2022 Shifts 465 .355 222 42 18.9 243 127 52.3
2023 Shades 63 .383 31 3 9.7 32 15 46.9
2024 Shades 29 .481 21 0 0.0 8 0 0.0
! 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 76 16.2 28.9% 0.0% 47 21.9 0.0% 4.3%
2022 488 16.7 26.2% 0.2% 340 22.1 0.3% 5.6%
2023 65 14.8 52.3% 0.0% 27 18.7 0.0% 0.0%
2024 37 15.7 32.4% 0.0% 15 16.8 0.0% 0.0%

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Pitch Distribution

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