Jonathan Loáisiga

P Arizona Diamondbacks
Age 32 RHP 5'11" / 195 lbs MLB peak 0.5 · 2027
Overview
MLBRP40-MAN
YearAgeLvl / TeamGGSIPERAFIPK%BB%WARMLE rates
202429MLBNYY3040.002.3515.0%5.0%0.1
202530MIX3 levels371383.554.2821.3%4.9%0.1K 18.5% · BB 5.2% · FIP 4.86
202631MLBARI670672.422.7018.4%3.8%1.5
2027PROJ32MLBARI570603.693.7020.3%4.7%0.6
2028PROJ95% MLB33MLBARI400423.863.9819.5%5.1%0.3
2029PROJ90% MLB34MLBARI260274.114.2818.6%5.6%0.1
Last 3 seasons WAR 1.7  ·  Next 3 projected WAR 1.0Projected rows: MLB playing time only, park and league context applied.
Contract
No contract data on file.
Skills · percentileStatcast 2026
FB Velo90
xwOBA vs90
K%24
Form2.16 ERA (proj 3.69) · K 17.9% (proj 20.3%) · BB 4.2% (proj 4.7%) · last 90d · 25 IP through Oct 27
CompsShawn Camp (age 32) · Jumbo Diaz (age 32) · Chris Martin (age 32)
2027 FULL-SEASON PROJECTIONrates below = full-season projection
showingPROJ
wRC+ AGAINSTvL 9486vR 78
ERA3.69
FIP3.70
K%20.3%
BB%4.7%
K-BB%15.7%
Proj IP60
Value2027 · WAR
Runs saved vs league avg · 60 IP
K: -1.6 runs (Runs saved by strikeouts vs lg-avg K%)-2KBB: +5.0 runs (Runs saved by walk suppression vs lg-avg BB%)+5BBCONTACT: -0.2 runs (Runs saved on contact quality (HR suppression) vs lg)-0CONTACTSTAM: +2.5 runs (Replacement credit for innings volume)+2STAMTotal WAR: +0.60 (60 IP)+0.6WAR
0.60.30.1272829
Grades · Statcast · Contract
Scouting Grades
STUF5050
CTRL5555
CMD4040
K†5050
Statcast Percentiles
FB Velo
p9097.6
Whiff%
p3523.1%
K%
p2418.4%
xwOBA vs
p900.269

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 the standard WAR scale.

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)
201621A MLECharleston RiverDogs11210211100%2.320.0%10.0%10.0%10.0%7.718.17—
201621A RAWCharleston RiverDogs11210211100%2.320.0%10.0%10.0%10.0%7.718.24—
201722ROK MLEGCL Yankees East7716591521100%2.217.3%4.2%13.1%2.4%2.303.48—
201722ROK RAWGCL Yankees East7716591521100%2.225.4%3.4%22.0%1.7%2.302.40—
201823MIX MLE4 levels23188133710020978%3.526.0%6.0%20.0%3.0%3.573.30+2.1
201823MIX RAW4 levels23188133710020978%3.529.7%5.9%23.7%2.7%3.572.81+2.6
201924MIX MLE3 levels219492145921943%2.326.0%10.3%15.7%4.2%4.934.50+0.0
201924MIX RAW3 levels219492145921943%2.327.6%9.8%17.8%4.2%4.934.36+0.1
202025MLB MLENew York Yankees12323100226325%1.922.0%6.0%16.0%2.8%3.523.54+0.3
202025MLB RAWNew York Yankees12323100226325%1.922.0%6.0%16.0%3.0%3.523.67+0.2
202126MLB MLENew York Yankees57071283691630%1.224.4%5.7%18.7%1.0%2.172.30+1.9
202126MLB RAWNew York Yankees57071283691630%1.224.4%5.7%18.7%1.1%2.172.38+1.8
202227MIX MLE3 levels52150212401832%1.018.2%8.9%9.4%1.4%4.143.44+0.7
202227MIX RAW3 levels52150212401832%1.018.9%8.5%10.4%1.4%4.143.36+0.7
202328MIX MLE3 levels200228511020%1.18.7%0.0%8.7%2.7%3.323.86+0.2
202328MIX RAW3 levels200228511020%1.112.9%0.0%12.9%2.4%3.323.28+0.3
202429MLB MLENew York Yankees304203100%1.315.0%5.0%10.0%0.0%0.002.47+0.1
202429MLB MLENew York Yankees304203100%1.315.0%5.0%10.0%0.0%0.002.47+0.1
202429MLB RAWNew York Yankees304203100%1.315.0%5.0%10.0%0.0%0.002.35+0.1
202530MIX MLE3 levels3713816435873%1.018.5%5.2%13.3%4.9%3.554.86-0.1
202530MIX MLE3 levels3713816435873%1.018.5%5.2%13.3%4.9%3.554.86-0.1
202530MIX RAW3 levels3713816435873%1.021.3%4.9%16.5%4.3%3.554.28+0.1
202631MLB MLEArizona Diamondbacks67067261481030%1.018.4%3.8%14.6%1.2%2.422.70+1.5
202631MLB MLEArizona Diamondbacks67067261481030%1.018.4%3.8%14.6%1.2%2.422.70+1.5
202631MLB RAWArizona Diamondbacks67067261481030%1.018.4%3.8%14.6%1.1%2.422.70+1.5
▸ Career totals (raw MLB only — as recorded)
MLB Career—26011316131828086304%1.221.2%6.5%14.7%2.3%3.303.38+4.4
▸ 2027 season — projected remainder (no 2027 stats recorded)
202732MLBARI57060253521260%1.120.3%4.7%15.7%2.4%3.693.70+0.6
▸ Career projection (2028+) — MLB context, MLB playing time (IP × MLB%)
202833MLB MLEARI42044186361050%1.119.5%5.1%14.4%2.7%3.863.98+0.3
202934MLB MLEARI2903012824740%1.018.6%5.6%13.0%3.0%4.114.28+0.1
202833MLB CTXARI4004217735950%1.119.5%5.1%14.4%2.7%3.863.98+0.3
202934MLB CTXARI2602711421630%1.018.6%5.6%13.0%3.0%4.114.28+0.1
▸ Career totals — MLB only (actual + projected)
Career— RAW326113861610336102383%1.220.9%6.3%14.6%2.4%3.423.44+5.1
/ 200 IP— RAW169620083517453203%1.220.9%6.3%14.6%2.4%3.423.44+2.6
Career— MLE3004042217453741064313%1.421.4%6.1%15.3%2.5%3.303.43+4.8
/ 200 IP— MLE14219200826177502113%1.421.4%6.1%15.3%2.5%3.303.43+2.5

How the minor-league lines were translated

One row per minor-league stint. Open a row to see each step: the raw rate, the park adjustment, the league/level factor, the age adjustment (hitters) and the resulting MLE rate. Factors are the same ones listed on the MLE Factors page.

2019 AAAScranton/Wilkes-Barre RailRiders · 16 IPFIP 4.09 → 4.45 (+0.36)K% 27.9% → 24.6%
ComponentRawPark ÷Level factor ×= MLE
K% /BF27.94%—×0.88024.59%
BB% (unintentional) /BF7.35%—×1.0507.72%
HR / BF /BF4.41%÷1.087×1.1004.46%

Factors used: pitcher AAA level factors — K ×0.88, BB ×1.05, HR ×1.10. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 117).

Result: FIP 4.09 → 4.45, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).

2018 AATrenton Thunder · 34 IPFIP 3.58 → 4.46 (+0.89)K% 28.4% → 23.0%
ComponentRawPark ÷Level factor ×= MLE
K% /BF28.37%—×0.81022.98%
BB% (unintentional) /BF4.26%—×1.1004.68%
HR / BF /BF4.26%÷1.034×1.2004.94%

Factors used: pitcher AA level factors — K ×0.81, BB ×1.10, HR ×1.20. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 107).

Result: FIP 3.58 → 4.46, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).

2018 A+Tampa Tarpons · 20 IPFIP 0.51 → 1.17 (+0.65)K% 32.5% → 25.0%
ComponentRawPark ÷Level factor ×= MLE
K% /BF32.50%—×0.77025.03%
BB% (unintentional) /BF1.25%—×1.1501.44%
HR / BF /BF0.00%÷1.205×1.2500.00%

Factors used: pitcher A+ level factors — K ×0.77, BB ×1.15, HR ×1.25. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 141).

Result: FIP 0.51 → 1.17, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).

2017 ROKGCL Yankees East · 16 IPFIP 2.31 → 3.48 (+1.17)K% 25.4% → 17.3%
ComponentRawPark ÷Level factor ×= MLE
K% /BF25.42%—×0.68017.29%
BB% (unintentional) /BF3.39%—×1.2504.24%
HR / BF /BF1.69%÷1.000×1.4002.37%

Factors used: pitcher ROK level factors — K ×0.68, BB ×1.25, HR ×1.40. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 100).

Result: FIP 2.31 → 3.48, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).

Career Comps

Completed MLB careers (no pro action in 2+ yrs) whose totals — actual + projected — most resemble this player's. Pool: 1,234 reliever careers (754 from 1990-2025 + 480 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 PROJECTION2.34520.8%6.6%0.933.46
Nick Vincent ('21)2.14624.1%6.2%0.943.30
George Kontos ('18)1.85119.8%7.1%0.963.10
Tony Castillo ('88-'98, 4 WAR*)2.65918.5%*7.3%*0.98*3.76*
Drew Storen ('17)2.25522.6%7.2%0.783.45
Donnie Moore ('75-'88, 7 WAR*)3.36020.7%*6.6%*1.00*3.83*
Ramon Hernandez ('67-'77, 6 WAR*)2.26119.7%*7.3%*0.77*3.65*