Roberto Perez

P ACL Mariners
Age 23 RHP 5'9" / 145 lbs ROK peak 0.2 · 2028
Overview
ROKPROSPECT
ETA2028MLB%0%
YearAgeLvl / TeamGGSIPERAFIPK%BB%WARMLE rates
202420ROKSEA173382.841.8929.5%7.1%—K 20.1% · BB 8.8% · FIP 3.01
202521MIX2 levels180263.422.3833.3%11.8%—K 24.4% · BB 10.9% · FIP 2.42
202622ROKSEA138462.561.9223.1%5.5%—K 15.7% · BB 6.9% · FIP 2.64
2027PROJ23MLBSEA220234.304.3020.5%8.0%0.1
2028PROJ43% MLB24MLBSEA170184.254.2121.4%7.9%0.1
Next 2 projected WAR 0.1Projected rows: MLB playing time only, park and league context applied.
Contract
No contract data on file.
Career WAR0 WAR median (P10 0 / P90 0, comp-based) · star 0% · didn't stick 98%
CompsClark Beeker (age 23) · Kyle Zimmer (age 23) · Jonathan Papelbon (age 24)
2027 FULL-SEASON PROJECTIONrates below = full-season projection
showingPROJ
wRC+ AGAINSTvL 115107vR 99
ERA4.30
FIP4.30
K%20.5%
BB%8.0%
K-BB%12.5%
Proj IP23
Value2027 · WAR
Runs saved vs league avg · 23 IP
K: -0.2 runs (Runs saved by strikeouts vs lg-avg K%)-0KBB: +0.1 runs (Runs saved by walk suppression vs lg-avg BB%)+0BBCONTACT: -0.2 runs (Runs saved on contact quality (HR suppression) vs lg)-0CONTACTSTAM: +0.9 runs (Replacement credit for innings volume)+1STAMTotal WAR: +0.07 (23 IP)+0.1WAR
0.10.12728
Grades · Contract
Scouting Grades
K†5050

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)
202420ROK MLEDSL Mariners173381564611118%2.220.1%8.8%11.2%0.9%2.843.01—
202420ROK MLEDSL Mariners173381564611118%2.220.1%8.8%11.2%0.9%2.843.01—
202420ROK RAWDSL Mariners173381564611118%2.229.5%7.1%22.4%0.6%2.841.89—
202521MIX MLE2 levels18026102341210%1.524.4%10.9%13.5%0.0%3.422.42—
202521MIX MLE2 levels18026102341210%1.524.4%10.9%13.5%0.0%3.422.42—
202521MIX RAW2 levels18026102341210%1.533.3%11.8%21.6%1.0%3.422.38—
202622ROK MLEACL Mariners138461824210062%3.515.7%6.9%8.8%0.0%2.562.64—
202622ROK MLEACL Mariners138461824210062%3.515.7%6.9%8.8%0.0%2.562.64—
202622ROK RAWACL Mariners138461824210062%3.523.1%5.5%17.6%0.0%2.561.92—
▸ 2027 season — projected remainder (no 2027 stats recorded)
202723MLBSEA220239720830%1.020.5%8.0%12.5%2.8%4.304.30+0.1
▸ Career projection (2028+) — MLB context, MLB playing time (IP × MLB%)
202824MLB MLESEA40042178381450%1.121.4%7.9%13.5%2.8%4.254.21+0.2
202824MLB CTXSEA170187616620%1.121.4%7.9%13.5%2.8%4.254.21+0.1
▸ Career totals — MLB only (actual + projected)
Career— RAW170187616620%1.121.4%7.9%13.5%2.8%4.253.83+0.2
/ 200 IP— RAW190020084417867220%1.121.4%7.9%13.5%2.8%4.253.83+1.7
Career— MLE48111104408537123%2.319.3%8.5%10.8%0.3%2.862.72+0.2
/ 200 IP— MLE872020080015468323%2.319.3%8.5%10.8%0.3%2.862.72+0.8

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 PROJECTION0.33321.1%7.9%1.084.27
Kevin Quackenbush ('21)1.05221.0%9.2%1.044.41
Tyler Walker ('10)1.55018.9%8.5%1.114.23
Ian Krol ('21)1.04221.2%8.8%1.254.49
Dave Baldwin ('66-'73, 2 WAR*)1.15622.2%*9.2%*0.96*3.97*
Ed Vosberg ('86-'02, 1 WAR*)1.24721.0%*9.6%*0.86*4.06*
Gary Wayne ('89-'94, 2 WAR*)1.26219.9%*9.4%*1.05*3.88*