Jonathan Heasley
P | Bats/Throws: R/R | 6' 3" 225LBS | Age: 26
Draft: 2018 | Rd: 13, #392, Kansas City Royals | Oklahoma State
W L ERA G GS SV IP SO WHIP
2021 1 1 4.91 3 3 0 14.2 6 1.23
2022 4 10 5.28 21 21 0 104 70 1.49
2023 0 0 7.20 12 0 0 15 9 1.27
3 Seasons 5 11 5.45 36 24 0 133.2 85 1.44
G W-L ERA IP SO WHIP
2021 3 1-1 4.91 14.2 6 1.23
2022 21 4-10 5.28 104 70 1.49
2023 12 0-0 7.20 15 9 1.27
3 Seasons 36 5-11 5.45 133.2 85 1.44
MLB Percentile Rankings
Pitch Distribution

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Statcast Statistics

Season Age Pitches Batted
Balls		 Barrels Barrel % Barrel/PA Exit
Velocity		 Max EV Launch
Angle		 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 .398 .415 56.3 10.2 5.1 4.91 7.25
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 .635 .383 .425 .485 37.3 14.3 3.2 7.20 8.53
Player 2267 441 44 10.0 7.5 90.4 112.5 15.4 35.6 .279 .490 .360 .365 .391 45.6 14.5 8.9
MLB 6.9 4.7 88.4 122.4 12.2 33.1 .245 .406 .316 .315 .369 36.3 22.1 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Heasley relies on 4 pitches.
4-Seam Fastball
(44.8%) ,
Sweeper
(23.5%) ,
Curveball
(21.3%) ,
Changeup
(10.4%) ,


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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
Player 36.7 28.6 26.3 8.4 42.0 33.6 24.5 3.6 25.2 30.2 23.1 7.7 10.0 7.5
MLB 44.6 23.5 24.9 7.0 37.0 37.6 25.3 3.9 32.8 24.7 24.4 5.8 6.9 4.7
! Note: All figures in this table cover the period 2015-present.

Pitch Movement

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How this works: Every pitch is affected by the forces of gravity, which means that every pitch drops on its way from the mound to the plate. These numbers are reported with gravity, which makes them larger and different than other pitch movement numbers you may have seen. Since gravity requires time, and slower pitches aren’t ‘better’ just because they have more time to move, the movement of a pitch is compared to ‘average’ movement by comparing it to other MLB pitch types within +/- 2 MPH and from within +/- 0.5 feet of extension and release.
Vertical Movement (inches) Horizontal Movement (inches)
Year Pitch Team Hand # MPH Inches of Drop vs Avg % vs Avg Inches of Break vs Avg % Break vs Avg
2023 Changeup KC R 23 86.0 29.4 -1.5 -5 13.3 -0.9 -7
2023 Curveball KC R 47 79.8 58.2 5.1 10 6.8 -1.4 -18
2023 Sweeper KC R 52 83.2 40.6 1.6 4 11.9 -2.0 -14
2023 4-Seamer KC R 99 94.7 13.0 1.5 10 8.0 0.7 10
2022 Sweeper KC R 38 87.2 32.9 -2.6 -7 3.1 -7.7 -71
2022 Changeup KC R 380 84.9 27.7 -3.1 -10 12.9 -1.1 -8
2022 Slider KC R 185 85.2 34.3 -1.7 -5 3.4 -1.9 -36
2022 Curveball KC R 306 78.5 60.3 5.0 9 6.1 -2.4 -28
2022 Sinker KC R 53 92.9 13.6 -8.0 -37 12.0 -2.5 -17
2022 4-Seamer KC R 826 93.4 12.5 2.3 16 8.2 1.4 21
2021 4-Seamer KC R 109 93.5 13.8 1.2 8 9.1 2.1 30
2021 Changeup KC R 59 85.1 27.2 -3.0 -10 12.7 -1.2 -8
2021 Slider KC R 1 91.6 20.2 -8.3 -29 5.7 -7.0 -535
2021 Curveball KC R 67 80.0 55.0 2.3 4 5.6 -2.1 -27
2021 Sinker KC R 14 93.7 15.2 -5.9 -28 12.7 -2.1 -14
! 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 %
2023 4-Seamer -1.2 -1 99 44.8 28 .231 .462 .321 20.8 17.9 20.8 .302 .551 .385 33.3
2023 Sweeper -5.2 -3 52 23.5 15 .286 .786 .457 32.0 20.0 21.4 .302 .694 .430 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
2022 4-Seamer -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 0.9 2 187 10.4 52 .224 .408 .312 20.2 7.7 6.3 .261 .405 .312 42.2
2022 Sinker -1.7 -1 53 3.0 14 .417 .583 .471 26.1 28.6 36.4 .382 .664 .486 75.0
2022 Sweeper -4.4 -2 38 2.1 12 .400 .500 .388 24.0 8.3 4.8 .357 .436 .408 50.0
2021 4-Seamer -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 .070 .071 .073 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
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 52 83.2 53 13.2 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 184 85.2 30 5.0 10:00 10:00 0
2022 Sweeper 38 87.2 31 4.2 10:30 9:45 45
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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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
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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
Player 2,267 48.6 69.4 85.9 24.8 66.1 44.0 57.4 46.5 19.1 7.1 81.5
MLB 48.6 67.0 82.0 28.5 58.0 42.6 60.9 47.1 24.8 7.3 76.1
! 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 49 60 73 25
2022 6 12 9 10 7 18 16 10 6 6 20 8 6 40 73 69 42
2023 62 75 35
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Expected Home Runs

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
Player 23.5 27 25.1 2 12 24 7 25.9

Expected Home Runs by Park

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 19 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
Player 27 23 17 30 28 25 30 24 16 21 19 27 29 26 26 32 26 24 23 24 25 23 33 26 22 19 28 29 28 25 25
! Note: This tells how many of this player's home runs would have been out of other stadiums. This accounts for different wall heights, distances and environmental effects. For these purposes, the 2020 Blue Jays home field was still Rogers Centre, not Sahlen Field.
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Year to Year Changes

Metric 2021 2022 +/-   2023 +/-  
Fastball Velocity 93.5 93.3 -0.2 ↓ 94.7 1.4 ↑
Offspeed Velocity 85.1 84.9 -0.2 ↓ 86.0 1.1 ↑
Breaking Velocity 80.2 81.5 1.3 ↑ 81.6 0.1 ↑
Exit Velocity 92.2 90.2 -2.0 ↓ 89.7 -0.5 ↓
Launch Angle 15.7 14.9 -0.8 ↓ 18.2 3.3 ↑
Barrel % 12.5 9.4 -3.1 ↓ 11.8 2.4 ↑
Hard Hit % 56.3 45.3 -11.0 ↓ 37.3 -8.0 ↓
Sweet Spot % 22.9 34.8 11.9 ↑ 52.9 18.1 ↑
xBA .295 .268 -0.027 ↓ .343 0.075 ↑
BA .278 .267 -0.011 ↓ .288 0.021 ↑
xwOBA .398 .353 -0.045 ↓ .425 0.072 ↑
wOBA .371 .355 -0.016 ↓ .383 0.028 ↑
xSLG .584 .456 -0.128 ↓ .635 0.179 ↑
SLG .537 .478 -0.059 ↓ .610 0.132 ↑
K% 10.2 15.1 4.9 ↑ 14.3 -0.8 ↓
BB% 5.1 10.1 5.0 ↑ 3.2 -6.9 ↓
Swing % 44.8 46.0 1.2 ↑ 52.0 6.0 ↑
Whiff% 12.5 19.3 6.8 ↑ 23.5 4.2 ↑
In Zone % 46.8 48.6 1.8 ↑ 50.7 2.1 ↑
Out of Zone % 53.2 51.4 -1.8 ↓ 49.3 -2.1 ↓
Out of Zone Swing % 22.6 24.4 1.8 ↑ 31.2 6.8 ↑
First Pitch Swing % 39.0 28.8 -10.2 ↓ 38.1 9.3 ↑
First Pitch Strike % 64.4 55.9 -8.5 ↓ 61.9 6.0 ↑
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2021 Shifts 59 .371 27 2 7.4 32 19 59.4
2022 Shifts 465 .355 222 45 20.3 243 156 64.2
2023 Shades 63 .383 31 3 9.7 32 15 46.9
! 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%
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Pitch Distribution

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