Luis Guerrero

P Durham Bulls
Age 26 RHP 6'0" / 215 lbs AAA
Overview
AAARPROOKIE
YearAgeLvl / TeamGGSIPERAFIPK%BB%WARMLE rates
202423MIX2 levels510642.803.1632.0%12.4%1.1K 28.4% · BB 12.1% · FIP 3.75
202524MIX4 levels390484.475.4017.5%18.9%-0.5K 15.8% · BB 15.6% · FIP 5.37
202625MIX2 levels381488.697.3221.9%13.6%—K 18.5% · BB 12.9% · FIP 7.46
2027PROJ26MLBTB6065.556.1620.1%16.4%-0.1
2028PROJ43% MLB27MLBTB170185.756.0120.4%15.7%-0.3
2029PROJ63% MLB28MLBTB210225.835.9720.5%15.4%-0.3
Last 3 seasons WAR 0.6  ·  Next 3 projected WAR -0.7Projected rows: MLB playing time only, park and league context applied.
Contract
No contract data on file.
Skills · percentileStatcast 2025
FB Velo78
K%10
xwOBA vs10
Career WAR0.0 WAR median (P10 -0.2 / P90 0.2, comp-based) · star 0% · didn't stick 97%
CompsTyler Davis (age 25) · Nick Ernst (age 25) · Dusty Isaacs (age 26)
2027 FULL-SEASON PROJECTIONrates below = full-season projection
showingPROJ
wRC+ AGAINSTvL 150142vR 134
ERA5.55
FIP6.16
K%20.1%
BB%16.4%
K-BB%3.8%
Proj IP57
Value2027 · WAR
Runs saved vs league avg · 57 IP
K: -1.0 runs (Runs saved by strikeouts vs lg-avg K%)-1KBB: -5.7 runs (Runs saved by walk suppression vs lg-avg BB%)-6BBCONTACT: -5.8 runs (Runs saved on contact quality (HR suppression) vs lg)-6CONTACTSTAM: +2.3 runs (Replacement credit for innings volume)+2STAMTotal WAR: -1.07 (57 IP)-1.1WAR
-1.0-0.3-0.3272829
Grades · Statcast · Contract
Scouting Grades
STUF6060
CTRL2525
CMD3030
K†5050
Statcast Percentiles
FB Velo
p7896.5
Whiff%
p7729.5%
K%
p1013.9%
xwOBA vs
p100.379

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)
202221MIX MLE3 levels27039166591610%1.426.4%11.8%14.6%0.9%3.232.88—
202221MIX RAW3 levels27039166591610%1.435.5%9.6%25.9%0.6%3.231.64—
202322MIX MLE2 levels49054237683630%1.122.5%15.0%7.5%1.1%2.323.70—
202322MIX RAW2 levels49054237683630%1.128.7%15.2%13.5%1.3%2.323.30—
202423MIX MLE2 levels51064275883460%1.328.4%12.1%16.4%2.8%2.803.75+0.6
202423MIX MLE2 levels51064275883460%1.328.4%12.1%16.4%2.8%2.803.75+0.6
202423MIX RAW2 levels51064275883460%1.332.0%12.4%19.6%2.2%2.803.16+1.1
202524MIX MLE4 levels39048212374050%1.215.8%15.6%0.3%3.0%4.475.37-0.5
202524MIX MLE4 levels39048212374050%1.215.8%15.6%0.3%3.0%4.475.37-0.5
202524MIX RAW4 levels39048212374050%1.217.5%18.9%-1.4%2.4%4.475.40-0.5
202625MIX MLE2 levels381482285031163%1.318.5%12.9%5.5%7.8%8.697.46—
202625MIX MLE2 levels381482285031163%1.318.5%12.9%5.5%7.8%8.697.46—
202625MIX RAW2 levels381482285031163%1.321.9%13.6%8.3%7.0%8.697.32—
▸ Career totals (raw MLB only — as recorded)
MLB Career—22027108191600%1.217.6%14.8%2.8%0.0%2.633.47+0.4
▸ 2027 season — projected remainder (no 2027 stats recorded)
202726MLBTB606255410%1.020.1%16.4%3.8%4.2%5.556.16-0.1
▸ Career projection (2028+) — MLB context, MLB playing time (IP × MLB%)
202827MLB MLETB39041174362770%1.120.4%15.7%4.7%4.1%5.756.01-0.6
202928MLB MLETB33035147302360%1.120.5%15.4%5.1%4.1%5.835.97-0.5
202827MLB CTXTB1701876161230%1.120.4%15.7%4.7%4.1%5.756.01-0.3
202928MLB CTXTB2102293191440%1.020.5%15.4%5.1%4.1%5.835.97-0.3
▸ Career totals — MLB only (actual + projected)
Career— RAW59067274534270%1.119.3%15.2%4.1%2.5%4.504.77-0.2
/ 200 IP— RAW1780200822159126210%1.119.3%15.2%4.1%2.5%4.504.77-0.5
Career— MLE20412541118251151360%1.222.5%13.5%9.0%3.2%4.194.67-0.9
/ 200 IP— MLE1611200881198119280%1.222.5%13.5%9.0%3.2%4.194.67-1.8

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.

2026 AAADurham Bulls · 37 IPFIP 7.61 → 8.10 (+0.49)K% 18.3% → 15.7%
ComponentRawPark ÷Level factor ×= MLE
K% /BF18.29%—×0.86015.73%
BB% (unintentional) /BF13.14%—×0.90011.83%
HR / BF /BF8.00%÷1.000×1.1008.80%

Factors used: pitcher AAA level factors (Triple-A 2023+ robo-zone set: walks improve on promotion) — K ×0.86, BB ×0.90, 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 100).

Result: FIP 7.61 → 8.10, 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).

2026 AAMontgomery Biscuits · 10 IPFIP 4.22 → 5.37 (+1.15)K% 34.0% → 27.5%
ComponentRawPark ÷Level factor ×= MLE
K% /BF33.96%—×0.81027.51%
BB% (unintentional) /BF15.09%—×1.10016.60%
HR / BF /BF3.77%÷1.000×1.2004.53%

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 100).

Result: FIP 4.22 → 5.37, 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).

2025 AAAWorcester Red Sox · 27 IPFIP 5.65 → 5.97 (+0.33)K% 19.8% → 17.1%
ComponentRawPark ÷Level factor ×= MLE
K% /BF19.83%—×0.86017.05%
BB% (unintentional) /BF14.66%—×0.90013.19%
HR / BF /BF4.31%÷0.984×1.1004.82%

Factors used: pitcher AAA level factors (Triple-A 2023+ robo-zone set: walks improve on promotion) — K ×0.86, BB ×0.90, 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 97).

Result: FIP 5.65 → 5.97, 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).

2024 AAAWorcester Red Sox · 54 IPFIP 3.38 → 3.75 (+0.37)K% 33.1% → 28.4%
ComponentRawPark ÷Level factor ×= MLE
K% /BF33.05%—×0.86028.43%
BB% (unintentional) /BF13.39%—×0.90012.05%
HR / BF /BF2.51%÷0.996×1.1002.77%

Factors used: pitcher AAA level factors (Triple-A 2023+ robo-zone set: walks improve on promotion) — K ×0.86, BB ×0.90, 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 99).

Result: FIP 3.38 → 3.75, 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).

2023 AAPortland Sea Dogs · 50 IPFIP 3.00 → 3.70 (+0.69)K% 27.8% → 22.5%
ComponentRawPark ÷Level factor ×= MLE
K% /BF27.83%—×0.81022.54%
BB% (unintentional) /BF13.68%—×1.10015.05%
HR / BF /BF0.94%÷1.048×1.2001.08%

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 110).

Result: FIP 3.00 → 3.70, 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).

2023 AAAWorcester Red Sox · 5 IPFIP 5.80 → 6.07 (+0.27)K% 36.0% → 31.0%
ComponentRawPark ÷Level factor ×= MLE
K% /BF36.00%—×0.86030.96%
BB% (unintentional) /BF28.00%—×0.90025.20%
HR / BF /BF4.00%÷1.008×1.1004.37%

Factors used: pitcher AAA level factors (Triple-A 2023+ robo-zone set: walks improve on promotion) — K ×0.86, BB ×0.90, 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 102).

Result: FIP 5.80 → 6.07, 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).

2022 ASalem Red Sox · 24 IPFIP 2.21 → 3.53 (+1.32)K% 35.6% → 26.3%
ComponentRawPark ÷Level factor ×= MLE
K% /BF35.58%—×0.74026.33%
BB% (unintentional) /BF12.50%—×1.18014.75%
HR / BF /BF0.96%÷0.873×1.3001.43%

Factors used: pitcher A level factors — K ×0.74, BB ×1.18, HR ×1.30. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 75).

Result: FIP 2.21 → 3.53, 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).

2022 A+Greenville Drive · 13 IPFIP 0.87 → 1.65 (+0.77)K% 34.5% → 26.6%
ComponentRawPark ÷Level factor ×= MLE
K% /BF34.55%—×0.77026.60%
BB% (unintentional) /BF5.45%—×1.1506.27%
HR / BF /BF0.00%÷0.996×1.2500.00%

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 99).

Result: FIP 0.87 → 1.65, 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 PROJECTION0.85319.9%15.7%1.355.16
Doug Creek ('05)1.45822.2%15.1%1.525.32
Richie Lewis ('98)1.55918.1%14.1%1.384.88
Doug Bochtler ('00)1.36518.6%14.4%1.254.57
Ed Glynn ('75-'85, -0 WAR*)1.35323.5%*12.9%*1.22*4.69*
Dwayne Henry ('84-'95, -1 WAR*)1.76723.8%*14.2%*0.90*5.02*
Gene Harris ('89-'95, -1 WAR*)1.24020.0%*12.5%*0.98*4.96*