Jonathan Heasley

P Durham Bulls
Age 30 RHP 6'3" / 225 lbs AAA peak 0.2 · 2027 ILInjured 60-Day (D60)
Overview
AAARPD6040-MAN
YearAgeLvl / TeamGGSIPERAFIPK%BB%WARMLE rates
202427MIX2 levels143364.754.1020.3%7.2%0.2K 18.7% · BB 5.8% · FIP 3.72
202528MIX2 levels120176.485.2614.9%2.7%—K 14.0% · BB 4.2% · FIP 5.98
202629MIX2 levels84324.834.4614.9%4.5%0.2K 13.5% · BB 4.7% · FIP 4.13
2027PROJ30MLBTB55324.934.8615.1%7.0%0.0
2028PROJ61% MLB31MLBTB55305.035.0914.3%7.4%-0.1
2029PROJ72% MLB32MLBTB66335.225.3513.5%7.8%-0.2
Last 3 seasons WAR 0.4  ·  Next 3 projected WAR -0.2Projected rows: MLB playing time only, park and league context applied.
Contract
No contract data on file.
Scouting grades · 20-80
Stuff41Control46Command33FB velo48
CompsJuan Omar Espinoza (age 31) · Elian Leyva (age 30) · Zack Segovia (age 32)
2027 FULL-SEASON PROJECTIONrates below = full-season projection
showingPROJ
wRC+ AGAINSTvL 125117vR 109
ERA4.93
FIP4.86
K%15.1%
BB%7.0%
K-BB%8.1%
Proj IP32
Value2027 · WAR
Runs saved vs league avg · 32 IP
K: -1.7 runs (Runs saved by strikeouts vs lg-avg K%)-2KBB: +0.6 runs (Runs saved by walk suppression vs lg-avg BB%)+1BBCONTACT: -1.3 runs (Runs saved on contact quality (HR suppression) vs lg)-1CONTACTSTAM: +1.3 runs (Replacement credit for innings volume)+1STAMTotal WAR: -0.12 (32 IP)-0.1WAR
0.0-0.1-0.2-0.3272830
Grades · Arsenal · Contract
Scouting Grades
STUF4040
CTRL4545
CMD3535
K†3030
SL (58%)
CU (23%)
FB-4.2 (19%)

Contract

No contract data on file. Pre-MLB players and minor-league free agents do not yet have salary projections — entries are added at first 40-man roster placement.

Career Stats + Projections

Real MLB stats plus park-adjusted projections — this season (so far / rest / full), then future seasons and career totals.
basis chips: RAW = as recorded · CTX = with park/league context · A+C = actual + context combined · MLE = level/park-neutral
Methodology▸ how WAR & MLE are computed

Stats are park-neutral MLB equivalents. The "TEAM" column shows current org affiliation only — we do NOT project at that team's park.
Rates (K%, BB%, HR-BF) are park-stripped; MiLB stat lines are translated to their MLB-equivalent via per-level MLE factors.
WAR is computed from projected runs prevented vs a replacement pitcher (the marginal arm a team would call up if this pitcher were unavailable) — calibrated to industry-standard fWAR.

YearAge LvlTeam GGSIPBF KBBHR GS%IP/G K%BB%K-BB%HR% ERAFIP WAR
▸ Career — actual stats, one row per year (as recorded, no adjustments)
▸ Career — adjusted (each season translated to a park/league-neutral MLB-equivalent line; levels combined per year)
▸ Model inputs — neutral MLE (past 3 seasons + 2027 so far)
201821ROK MLEIdaho Falls Chukars1211512273516492%4.210.5%8.8%1.7%2.5%5.154.68—
201821ROK RAWIdaho Falls Chukars1211512273516492%4.215.4%7.0%8.4%1.8%5.153.69—
201922A MLELexington Legends2520113467120341180%4.519.0%8.6%10.4%2.8%3.124.12—
201922A RAWLexington Legends2520113467120341180%4.525.7%7.3%18.4%2.4%3.123.14—
202124MIX MLE2 levels2524120492126372196%4.821.0%8.2%12.8%5.2%3.525.25-0.5
202124MIX RAW2 levels2524120492126372196%4.825.6%7.5%18.1%4.3%3.524.20+1.0
202225MIX MLE2 levels30301436251155726100%4.817.5%9.2%8.3%4.5%5.025.28-0.6
202225MIX RAW2 levels30301436251155726100%4.818.4%9.1%9.3%4.2%5.025.05-0.2
202326MIX MLE2 levels441511049297472534%2.517.2%8.6%8.6%5.8%6.895.95-1.7
202326MIX RAW2 levels441511049297472534%2.519.7%9.6%10.2%5.1%6.895.58-1.3
202427MIX MLE2 levels143361533111521%2.618.7%5.8%12.9%2.7%4.753.72+0.4
202427MIX MLE2 levels143361533111521%2.618.7%5.8%12.9%2.7%4.753.72+0.4
202427MIX RAW2 levels143361533111521%2.620.3%7.2%13.1%3.3%4.754.10+0.2
202528MIX MLE2 levels120177411240%1.414.0%4.2%9.8%6.4%6.485.98—
202528MIX MLE2 levels120177411240%1.414.0%4.2%9.8%6.4%6.485.98—
202528MIX RAW2 levels120177411240%1.414.9%2.7%12.2%5.4%6.485.26—
202629MIX MLE2 levels8432134206550%4.013.5%4.7%8.8%2.9%4.834.13+0.3
202629MIX MLE2 levels8432134206550%4.013.5%4.7%8.8%2.9%4.834.13+0.3
202629MIX RAW2 levels8432134206550%4.014.9%4.5%10.4%3.7%4.834.46+0.2
▸ Career totals (raw MLB only — as recorded)
MLB Career—412414363591553159%3.514.3%8.7%5.7%4.9%6.045.80-1.4
▸ 2027 season — projected remainder (no 2027 stats recorded)
202730MLBTB55321352094100%6.415.1%7.0%8.1%3.2%4.934.86+0.0
▸ Career projection (2028+) — MLB context, MLB playing time (IP × MLB%)
202831MLB MLETB885021230167100%6.314.3%7.4%7.0%3.4%5.035.09-0.1
202932MLB MLETB884619526157100%5.813.5%7.8%5.8%3.7%5.225.35-0.2
203033MLB MLETB774217923157100%6.112.7%8.2%4.5%4.0%5.465.63-0.3
202831MLB CTXTB55301271894100%6.014.3%7.4%7.0%3.4%5.035.09-0.1
202932MLB CTXTB663313919115100%5.513.5%7.8%5.8%3.7%5.225.35-0.2
203033MLB CTXTB663414418126100%5.712.7%8.2%4.5%4.0%5.465.63-0.3
▸ Career totals — MLB only (actual + projected)
Career— RAW57402401045146874670%4.214.0%8.3%5.7%4.4%5.725.40-1.4
/ 200 IP— RAW4833200870122723870%4.214.0%8.3%5.7%4.4%5.725.40-1.1
Career— MLE170107621266446721911463%3.717.5%8.2%9.3%4.3%4.745.01-2.1
/ 200 IP— MLE5534200858151713763%3.717.5%8.2%9.3%4.3%4.745.01-1.5

Career Comps

Completed MLB careers (no pro action in 2+ yrs) whose totals — actual + projected — most resemble this player's. Pool: 1,474 reliever careers (754 from 1990-2025 + 720 historical, 1901-2023), also matched on career-to-date at the same age. * Historical (Lahman) careers: rates era-adjusted to 2001-24 league levels; WAR is an OGILVIE proxy.

Player162sIP/yrK%BB%HR/9ERA
OGILVIE CAREER PROJECTION1.66414.1%8.1%1.625.56
JC Ramírez ('19)1.47216.4%8.4%1.444.71
Giovanni Carrara ('06)2.45916.3%9.7%1.414.69
Mike Wright Jr. ('21)1.45517.4%8.8%1.475.97
Steve Shields ('85-'89, -3 WAR*)1.15517.0%*9.0%*1.61*5.49*
Chuck Hartenstein ('66-'77, -1 WAR*)1.55913.7%*7.2%*1.50*5.28*
Ken MacKenzie ('60-'65, -3 WAR*)1.06920.1%*7.3%*1.83*5.50*