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 12.46 3 0 0 4.1 4 2.08
4 Seasons 5 12 5.67 39 24 0 138 89 1.46
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 3 0-1 12.46 4.1 4 2.08
4 Seasons 39 5-12 5.67 138 89 1.46
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 .634 .383 .424 .484 37.3 14.3 3.2 7.20 8.48
2024 27 80 16 2 12.5 9.1 93.9 108.0 1.2 18.8 .335 .600 .500 .425 .494 68.8 18.2 4.5 12.46 8.03
Player 2347 457 46 10.1 7.6 90.5 112.5 14.9 35.0 .281 .494 .365 .368 .394 46.4 14.6 8.7
MLB 6.9 4.7 88.4 122.4 12.2 33.1 .245 .406 .316 .315 .369 36.3 22.2 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Heasley relies on 4 pitches.
Curveball
(28.7%) ,
Sweeper
(28.7%) ,
Slider
(26.3%) ,
Four Seamer
(16.3%) ,


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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 68.8 12.5 18.8 0.0 68.8 25.0 6.3 0.0 62.5 0.0 25.0 0.0 12.5 9.1
Player 37.9 28.0 26.0 8.1 42.9 33.3 23.9 3.5 26.5 29.1 23.2 7.4 10.1 7.6
MLB 44.6 23.5 24.8 7.0 37.0 37.5 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
2024 Sweeper BAL R 23 82.1 42.4 3.0 8 13.1 -1.0 -7
2024 Slider BAL R 21 86.8 31.0 -3.2 -9 2.4 -2.0 -46
2024 Curveball BAL R 23 79.8 59.8 6.8 13 6.1 -2.6 -30
2024 4-Seam Fastball BAL R 13 93.4 12.4 2.2 15 4.3 -2.7 -38
2023 Slider KC R 1 82.5 42.8 3.8 10 4.3 -2.5 -37
2023 4-Seam Fastball KC R 99 94.7 13.0 1.5 10 8.0 0.7 10
2023 Sweeper KC R 51 83.2 40.6 1.5 4 12.0 -1.8 -13
2023 Changeup KC R 23 86.0 29.4 -1.5 -5 13.3 -1.0 -7
2023 Curveball KC R 47 79.8 58.2 5.1 10 6.8 -1.4 -17
2022 Sinker KC R 53 92.9 13.6 -8.0 -37 12.0 -2.5 -17
2022 Changeup KC R 380 84.9 27.7 -3.1 -10 12.9 -1.1 -8
2022 4-Seam Fastball KC R 826 93.4 12.5 2.3 16 8.2 1.4 20
2022 Slider KC R 223 85.6 34.0 -1.5 -4 3.3 -1.7 -34
2022 Curveball KC R 306 78.5 60.3 5.0 9 6.1 -2.4 -28
2021 4-Seam Fastball 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 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
2021 Slider KC R 1 91.6 20.2 -8.3 -29 5.7 -7.0 -535
! 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 Curveball 1.5 0 23 28.7 5 .200 .200 .360 25.0 20.0 16.7 .163 .177 .148 75.0
2024 Sweeper 0.7 0 23 28.7 7 .167 .167 .229 42.9 42.9 30.0 .281 .333 .330 66.7
2024 Slider -0.3 0 21 26.3 3 .500 .500 .533 30.0 0.0 0.0 .247 .271 .383 50.0
2024 4-Seam Fastball -37.9 -5 13 16.3 7 .714 1.571 .957 0.0 0.0 0.0 .529 1.226 .730 71.4
2023 4-Seam Fastball -1.2 -1 99 44.8 28 .231 .462 .321 20.8 17.9 20.8 .302 .551 .385 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 .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
2024 Curveball 23 79.8 78 20.5 6:45 6:30 15
2024 4-Seam Fastball 13 93.4 95 19.2 12:45 12:30 15
2024 Slider 21 86.8 29 5.4 10:45 10:45 0
2024 Sweeper 23 82.1 53 14.4 7:45 8:30 -45
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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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
2024 80 52.5 59.5 84.0 21.1 37.5 42.5 63.6 41.3 24.2 10.0 62.5
Player 2,347 48.7 69.1 85.8 24.7 65.3 43.9 57.6 46.3 19.2 7.2 80.6
MLB 48.6 66.9 82.0 28.4 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
2024 25.8 2 2.0 0 0 1 1 50.0
Player 23.7 29 27.1 2 12 25 8 27.6

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
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 28 28 34 28 26 25 26 27 25 35 28 24 21 30 31 30 27 26
! 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 +/-   2024 +/-  
Fastball Velocity 93.5 93.3 -0.2 ↓ 94.7 1.4 ↑ 93.4 -1.3 ↓
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 ↑ 82.8 1.2 ↑
Exit Velocity 92.2 90.2 -2.0 ↓ 89.7 -0.5 ↓ 93.9 4.2 ↑
Launch Angle 15.7 14.9 -0.8 ↓ 18.2 3.3 ↑ 1.2 -17.0 ↓
Barrel % 12.5 9.4 -3.1 ↓ 11.8 2.4 ↑ 12.5 0.7 ↑
Hard Hit % 56.3 45.3 -11.0 ↓ 37.3 -8.0 ↓ 68.8 31.5 ↑
Sweet Spot % 22.9 34.8 11.9 ↑ 52.9 18.1 ↑ 18.8 -34.1 ↓
xBA .295 .268 -0.027 ↓ .343 0.075 ↑ .335 -0.008 ↓
BA .278 .267 -0.011 ↓ .288 0.021 ↑ .400 0.112 ↑
xwOBA .398 .353 -0.045 ↓ .424 0.071 ↑ .425 0.001 ↑
wOBA .371 .355 -0.016 ↓ .383 0.028 ↑ .500 0.117 ↑
xSLG .584 .456 -0.128 ↓ .634 0.178 ↑ .600 -0.034 ↓
SLG .537 .478 -0.059 ↓ .610 0.132 ↑ .700 0.090 ↑
K% 10.2 15.1 4.9 ↑ 14.3 -0.8 ↓ 18.2 3.9 ↑
BB% 5.1 10.1 5.0 ↑ 3.2 -6.9 ↓ 4.5 1.3 ↑
Swing % 44.8 46.0 1.2 ↑ 52.0 6.0 ↑ 41.3 -10.7 ↓
Whiff% 12.5 19.3 6.8 ↑ 23.5 4.2 ↑ 24.2 0.7 ↑
In Zone % 46.8 48.6 1.8 ↑ 50.7 2.1 ↑ 52.5 1.8 ↑
Out of Zone % 53.2 51.4 -1.8 ↓ 49.3 -2.1 ↓ 47.5 -1.8 ↓
Out of Zone Swing % 22.6 24.4 1.8 ↑ 31.2 6.8 ↑ 21.1 -10.1 ↓
First Pitch Swing % 39.0 28.8 -10.2 ↓ 38.1 9.3 ↑ 27.3 -10.8 ↓
First Pitch Strike % 64.4 55.9 -8.5 ↓ 61.9 6.0 ↑ 63.6 1.7 ↑
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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
2024 Shades 22 .500 16 0 0.0 6 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 30 15.7 26.7% 0.0% 11 17.1 0.0% 0.0%
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Pitch Distribution

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