Jonathan Heasley

Jonathan Heasley

27-Year-Old PitcherRP
Chicago White Sox
2025 Fantasy Outlook
There was no outlook written for Jonathan Heasley in 2025. Check out the latest news below for more on his current fantasy value.
$Signed a one-year, minor-league contract with the White Sox in January of 2025.
Gets NRI from ChiSox
PChicago White Sox  NRI
January 14, 2025
The White Sox signed Heasley to a minor-league contract Tuesday that includes an invitation to spring training.
ANALYSIS
Heasley made four relief appearances with the Orioles in 2024, allowing 11 runs (10 earned) over 5.1 innings. Slated to turn 28 later this month, Heasley has posted a 5.89 ERA and 89:55 K:BB across 139 innings at the major-league level.
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Pitching Stats
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2024
2023
2022
2021
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2023 MLB Game Log
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2022 MLB Game Log
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2021 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
27
Last 10 Games
27
Last 5 Games
27
How many pitches does Jonathan Heasley generally throw?
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
What part of the game does Jonathan Heasley generally pitch?
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2022
 
 
-7%
BAA vs RHP
2024
 
 
-53%
BAA vs RHP
2023
 
 
-20%
BAA vs RHP
2022
 
 
-1%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2022vs Left .287 283 40 33 70 12 4 14
Since 2022vs Right .266 274 43 19 65 12 0 12
2024vs Left .625 8 1 0 5 0 0 0
2024vs Right .294 21 3 3 5 0 0 2
2023vs Left .321 32 3 2 9 1 1 2
2023vs Right .258 31 6 0 8 1 0 3
2022vs Left .269 243 36 31 56 11 3 12
2022vs Right .265 222 34 16 52 11 0 7
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2022
 
 
-18%
ERA on Road
2024
 
 
-50%
ERA at Home
2023
 
 
-25%
ERA on Road
2022
 
 
-17%
ERA on Road
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2022Home 6.64 1.47 59.2 3 6 0 6.3 2.9 1.8
Since 2022Away 5.43 1.53 64.2 1 5 0 5.7 4.6 1.9
2024Home 13.50 2.00 4.0 0 0 0 9.0 2.3 4.5
2024Away 27.00 3.75 1.1 0 1 0 0.0 13.5 0.0
2023Home 8.22 1.43 7.2 0 0 0 3.5 0.0 2.3
2023Away 6.14 1.09 7.1 0 0 0 7.4 2.5 3.7
2022Home 5.81 1.44 48.0 3 6 0 6.6 3.4 1.5
2022Away 4.82 1.54 56.0 1 4 0 5.6 4.7 1.8
More Splits View More Split Stats
Stat Review
How does Jonathan Heasley compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.

* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
  • K/BB
    Strikeout to walk ratio.
  • K/9
    Average strikeouts per nine innings.
  • BB/9
    Average walks per nine innings.
  • HR/9
    Average home runs allowed per nine innings.
  • Fastball
    Average fastball velocity.
  • ERA
    Earned run average. The average earned runs allowed per nine innings.
  • WHIP
    Walks plus hits per inning pitched.
  • BABIP
    Batting average on balls in play. Measures how many balls in play against a pitcher go for hits.
  • GB/FB
    Groundball to flyball ratio. The higher the number, the more likely a pitcher is to induce groundballs.
  • Left On Base
    The percentage of base runners that a pitcher strands on base over the course of a season.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Barrels/BBE
    The percentage of batted ball events resulting in a Barrel. A Barrel is a batted ball with similar exit velocity and launch angle to past ones that led to a minimum .500 batting average and 1.500 slugging percentage.
  • Spin Rate
    Spin Rate is the rate of spin on a baseball after it is released. It is measured in revolutions per minute (rpm).
  • Balls Hit 95+ MPH
    The percentage of batted balls hit that met or exceeded the 95 MPH threshold.
  • Swinging Strike
    The percentage of pitches that result in a swing and a miss.
K/BB
1.33
 
K/9
6.8
 
BB/9
5.1
 
HR/9
3.4
 
Fastball
93.2 mph
 
ERA
16.88
 
WHIP
2.44
 
BABIP
.420
 
GB/FB
3.25
 
Left On Base
19.6%
 
Exit Velocity
81.5 mph
 
Barrels/BBE
5.6%
 
Spin Rate
2305 rpm
 
Balls Hit 95+ MPH
36.1%
 
Swinging Strike
9.3%
 
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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2023 Fantasy Outlook
Heasley spent a majority of 2022 in the majors, but the fact that he averaged less than five innings per start (104 innings across 21 starts) shows just how poorly it went. He had a 5.28 ERA, 1.49 WHIP and 70:47 K:BB in the majors while adding a 4.35 ERA, 1.15 WHIP and 45:10 K:BB across 39.1 innings at Triple-A Omaha. Entering his age-26 season, the minor-league numbers suggest at least some modest improvements could be on the way if he can cut down on his 4.1 BB/9 and 1.6 HR/9 at the major-league level. The right-hander has solid movement on his fastball and curveball, but he struggled to avoid hard contact, giving up a 45.3 percent hard-hit rate last year. At best, Heasley's a back-of-the-rotation starter, though he could also be in contention to work as a swingman if the Royals go with five starters to begin 2023. Another tour in Triple-A also remains a possibility.
More Fantasy News
Let go by Baltimore
PFree Agent  NRI
Shoulder
July 25, 2024
The Orioles released Heasley (shoulder) on Thursday, Jake Rill of MLB.com reports.
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Removed from 40-man roster
PBaltimore Orioles  NRI
Shoulder
July 24, 2024
The Orioles designated Heasley (shoulder) for assignment Wednesday.
ANALYSIS
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Sidelined with shoulder issue
PBaltimore Orioles  NRI
Shoulder
June 16, 2024
Triple-A Norfolk placed Heasley on its 7-day injured list Sunday with right shoulder inflammation, Jake Rill of MLB.com reports.
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Sent back to Triple-A
PBaltimore Orioles  NRI
May 24, 2024
The Orioles optioned Heasley to Triple-A Norfolk on Friday.
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Joins big-league bullpen
PBaltimore Orioles  NRI
May 23, 2024
The Orioles recalled Heasley from Triple-A Norfolk on Thursday, Dan Connolly of The Athletic reports.
ANALYSIS
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