Armside

Jonathan Heasley

TB · RHP · RP · Age 29

Season
2026
G/GS
1/0
IP
4.0
BF
19
xwOBA
.479
K%
10.5%
BB%
0.0%
CSW%
18.8%
Whiff%
7.9%
Barrel%
11.8%
FB Velo
91.4

Below the qualifying minimum; percentiles rank qualified players only.

Percentile profile, 2026 regular season.

Jonathan HeasleyPercentile profile · 2026 regular seasonAmong qualified pitchers · red is better, blue is worsexwOBA1.479xBA1.352xSLG1.791Avg EV195.1HardHit%158.8%Barrel%211.8%K%110.5%BB%990.0%Whiff%17.9%Chase%9837.9%Armside · Data: MLB Advanced Media / Baseball Savant

Arsenal, 2026

Pitchⓘ#ⓘUsageⓘVeloⓘSpinⓘIVBⓘHBⓘWhiff%ⓘCSW%ⓘxwOBAⓘRVⓘRV/100ⓘ
4-Seam Fastball FF2539.1%91.4210017.8-9.25.3%16.0%.521-1-5.1

Pitch types with 25+ pitches; knuckle curves and slow curves shown as curveballs. Grey rates: under 405 pitches of the type (Savant’s qualifying line, 2.5 per team game).

Season by season

SeasonⓘTeamⓘAgeⓘGⓘGSⓘIPⓘBFⓘK%ⓘBB%ⓘK−BB%ⓘCSW%ⓘxwOBAⓘFB Veloⓘ
2021KC243314.25910.2%5.1%5.1%20.0%.39593.5
2022KC252121104.046515.1%10.1%4.9%23.7%.35593.3
2023KC2612015.06314.3%3.2%11.1%26.7%.42594.7
2024BAL27405.12913.8%10.3%3.4%28.7%.43193.1
2026TB29104.01910.5%0.0%10.5%18.8%.47991.4
Career——4124143.063514.3%8.7%5.7%23.7%.37393.4