Thyago Vieira

P Arizona Diamondbacks
Age 34 RHP 6'3" / 259 lbs MLB
Overview
MLBRP
YearAgeLvl / TeamGGSIPERAFIPK%BB%WARMLE rates
201926MIX2 levels450546.134.0923.6%10.8%0.3K 21.1% · BB 10.8% · FIP 4.33
202330MIX2 levels350413.102.6331.0%9.4%0.9K 27.2% · BB 8.4% · FIP 3.10
202431MLBARI280385.215.7622.0%14.1%-0.5
2027PROJ34MLBARI460484.844.7624.8%12.3%-0.1
2028PROJ95% MLB35MLBARI390414.955.0523.7%12.6%-0.2
Last 3 seasons WAR 0.7  ·  Next 2 projected WAR -0.3Projected rows: MLB playing time only, park and league context applied.
Contract
No contract data on file.
Skills · percentileStatcast 2024
FB Velo90
K%49
Whiff%47
xwOBA vs19
CompsAustin Adams (age 32) · Diego Moreno (age 34) · Joe Nelson (age 34)
2027 FULL-SEASON PROJECTIONrates below = full-season projection
showingPROJ
wRC+ AGAINSTvL 126118vR 110
ERA4.84
FIP4.76
K%24.8%
BB%12.3%
K-BB%12.4%
Proj IP48
Value2027 · WAR
Runs saved vs league avg · 48 IP
K: +0.9 runs (Runs saved by strikeouts vs lg-avg K%)+1KBB: -2.0 runs (Runs saved by walk suppression vs lg-avg BB%)-2BBCONTACT: -2.0 runs (Runs saved on contact quality (HR suppression) vs lg)-2CONTACTSTAM: +2.0 runs (Replacement credit for innings volume)+2STAMTotal WAR: -0.12 (48 IP)-0.1WAR
-0.1-0.22728
Grades · Statcast · Arsenal · Contract
Scouting Grades
STUF5050
CTRL2020
CMD3535
K†6060
Statcast Percentiles
FB Velo
p9097.7
Whiff%
p4724.8%
K%
p4922.0%
xwOBA vs
p190.349
SI (40%)
FB-1.2 (63%)
SL-5.7 (36%)

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)
201522A MLEClinton LumberKings22031152222020%1.410.7%15.5%-4.8%2.0%6.975.27—
201522A RAWClinton LumberKings22031152222020%1.414.5%13.2%1.3%1.3%6.974.45—
201623A+ MLEBakersfield Blaze34044189531810%1.321.6%11.0%10.6%0.7%2.843.04—
201623A+ RAWBakersfield Blaze34044189531810%1.328.0%9.5%18.5%0.5%2.842.22—
201724MIX MLE3 levels42055232472220%1.316.6%10.4%6.2%1.0%3.933.57+0.6
201724MIX RAW3 levels42055232472220%1.320.3%9.5%10.8%0.9%3.933.06+1.0
201825MIX MLE2 levels52059274653360%1.121.5%12.5%9.1%2.0%5.683.98+0.4
201825MIX RAW2 levels52059274653360%1.123.7%12.0%11.7%2.2%5.683.90+0.5
201926MIX MLE2 levels45054250592770%1.221.1%10.8%10.2%3.0%6.134.33+0.1
201926MIX RAW2 levels45054250592770%1.223.6%10.8%12.8%2.8%6.134.09+0.3
202330MIX MLE2 levels35041171531630%1.227.2%8.4%18.9%2.3%3.103.10+0.7
202330MIX RAW2 levels35041171531630%1.231.0%9.4%21.6%1.8%3.102.63+0.9
202431MLB MLEArizona Diamondbacks28038177392580%1.422.0%14.1%7.9%4.8%5.215.65-0.5
202431MLB MLEArizona Diamondbacks28038177392580%1.422.0%14.1%7.9%4.8%5.215.65-0.5
202431MLB RAWArizona Diamondbacks28038177392580%1.422.0%14.1%7.9%4.5%5.215.76-0.5
▸ Career totals (raw MLB only — as recorded)
MLB Career—530673126540120%1.320.8%12.8%8.0%3.8%5.805.29-0.6
▸ 2027 season — projected remainder (no 2027 stats recorded)
202734MLBARI46048203502570%1.024.8%12.3%12.4%3.3%4.844.76-0.1
▸ Career projection (2028+) — MLB context, MLB playing time (IP × MLB%)
202835MLB MLEARI41043181432370%1.023.7%12.6%11.1%3.6%4.955.05-0.2
202835MLB CTXARI39041173412260%1.123.7%12.6%11.1%3.6%4.955.05-0.2
▸ Career totals — MLB only (actual + projected)
Career— RAW92010748410662180%1.221.8%12.7%9.1%3.8%5.484.93-0.5
/ 200 IP— RAW1710200901198116340%1.221.8%12.7%9.1%3.8%5.484.93-0.9
Career— MLE25803221445293169320%1.220.3%11.7%8.6%2.2%4.814.09-0.8
/ 200 IP— MLE1600200898182105200%1.220.3%11.7%8.6%2.2%4.814.09-1.5

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 PROJECTION0.85222.7%12.8%1.405.28
Doug Creek ('05)1.45822.2%15.1%1.525.32
Ron Piche ('60-'66, -3 WAR*)1.14420.6%*12.8%*1.14*5.06*
Armando Almanza ('05)1.15424.4%14.3%1.434.82
Paul Spoljaric ('00)1.46922.1%12.9%1.335.52
Daryl Patterson ('68-'74, -1 WAR*)1.24618.3%*11.2%*1.27*5.03*
Ed Glynn ('75-'85, -0 WAR*)1.35323.5%*12.9%*1.22*4.69*