Harold Rivas

OF FCL Red Sox
Age 19 R/R 6'2" / 177 lbs ROK HR -5%K -4% Svc 0.0 · Ctrl thru 2036
Overview
ROKPROSPECTMiLBFA 2037
OGV OFP35OGV rank#2101ETA2029MLB%0%
YearAgeLvl / TeamPAAVG/OBP/SLGHRSBwRC+WARMLE AVG/OBP/SLG
202517ROKDSL Red Sox B…196.258/.395/.38421853—.173/.287/.238
202618ROKBOS198.241/.345/.42962345—.168/.244/.291
2027PROJMLE19MLBBOS308.205/.277/.3105767-0.1
2028PROJ34% MLB20MLBBOS53.215/.288/.3301172-0.1
2029PROJ48% MLB21MLBBOS126.220/.293/.3412377-0.1
Next 3 projected WAR -0.3Projected rows: MLB playing time only, park and league context applied.
ContractESTIMATED
Control thru2036Service0.0First FA2037
2027MiLB2028MiLB2029MiLB2030MiLB2031Pre-Arb$0.9M2032Pre-Arb$0.9M2033Pre-Arb$0.9M2034Arb-1$1M+2
Skills · percentileMiLB Statcast 2026 Rk
Speed98
ISO80
Whiff%49
Z-Con%40
wRC+38
wOBA37
Career WAR0.0 WAR median (P10 -0.2 / P90 3.5, comp-based) · star 2% · didn't stick 88%
CompsJett Williams (age 19) · Che-Hsuan Lin (age 19) · Gilberto Celestino (age 19)
2027 FULL-SEASON PROJECTIONpark-neutral Marcel · 104 proj PA
wRC+†67
AVG/OBP/SLG.204 / .275 / .307
PA104
HR2
K%29
BB%8
ISO105
MLB%0%
Value2027 · WAR
BAT: -4.1 runs (wOBA-derived runs vs avg)-4BATRUN: +0.6 runs (SB/CS + UBR baserunning)+1RUNFLD: +0.2 runs (Defensive runs vs avg)+0FLDPOS: -0.6 runs (Positional adjustment)-1POSREP: +2.3 runs (Replacement-level credit)+2REPTotal WAR: -0.10-0.1WAR
0.00.51.00.00.10.20.20.10.027282930313233343536
━ projected WAR━ paid WAR ($/8M) surplus deficit-$3M ctrl surplus
Contract
Contract ESTIMATED · service-time + WAR-based estimator (needs verification)
Status   MiLB
MLB Debut   2031
Service   0 yrs (est)
Team Control Through   2036
First FA Year   2037
YearStatusSalary Proj WAR Value Surplus
2027MiLBstill in minors · estimated debut 2031
2028MiLBstill in minors · estimated debut 2031
2029MiLBstill in minors · estimated debut 2031
2030MiLBstill in minors · estimated debut 2031
2031Pre-Arb$0.9M———
2032Pre-Arb$0.9M+0.1$0.3M+$0.0M (cut)
2033Pre-Arb$0.9M+0.2$0.5M+$0.0M
2034Arb-1$1M+0.2$0.5M+$0.0M (cut)
2035Arb-2$2M+0.1$0.2M+$0.0M (cut)
2036Arb-3$2M———
Totals $0.9M $1M +$0.0M

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 these numbers are built

All seasons translated to park-neutral MLB-equivalent (MLE) and combined per year. 2027 = full-season projection (no games played yet). 2028+ via Advanced Marcel + aging curve.

YearAge LvlTeam MLB% PAAB H2B3BHR BBSOHBP SBCS AVGOBPSLGOPS ISOBABIP K%BB% wOBAwRC+ BATRUNFLDPOSREP WAR
▸ Career — actual stats, one row per stint (as recorded, no adjustments)
202517 ROKDSL Red Sox Blue — 196159 41642 35351 188 258395384779 126317 1818 356 53 — — — — — —
202618 ROKFCL Red Sox — 198170 41646 24523 235 241345429775 188310 2612 345 45 — — — — — —
▸ Career — adjusted (every ACTUAL line translated to park/league-neutral MLB equivalents)
202517 ROK MLEDSL Red Sox Blue — 196168 29421 26431 188 173287238525 65221 2213 246 53 — — — — — —
202618 ROK MLEFCL Red Sox — 198179 30434 15753 235 168244291534 123247 388 234 45 — — — — — —
202517 ROK MLEDSL Red Sox Blue — 196168 29421 26431 188 173287238525 65224 2213 246 53 — — — — — —
202517 ROK RAWDSL Red Sox Blue — 196159 41642 35351 188 258395384779 126317 1818 356 53 — — — — — —
202618 ROK MLEFCL Red Sox — 198179 30434 15753 235 168244291534 123257 388 234 45 — — — — — —
202618 ROK RAWFCL Red Sox — 198170 41646 24523 235 241345429775 188310 2612 345 45 — — — — — —
202517 ROK MLEDSL Red Sox Blue — 196167 29421 26431 188 174287240527 66221 2213 246 53 — — — — — —
202618 ROK MLEFCL Red Sox — 198178 30434 15753 235 169244292536 124247 388 234 45 — — — — — —
▸ Model inputs — neutral MLE (past 3 seasons)
202517 ROK MLEDSL Red Sox Blue — 196167 29421 26431 188 174287240527 66221 2213 246 53 — — — — — —
202618 ROK MLEFCL Red Sox — 198178 30434 15753 235 169244292536 124247 388 234 45 — — — — — —
▸ 2027 season
▸ 2027 — full MLE projection (neutral park, full availability)
202719 MLB MLEBOS 0% 308277 57935 25883 71 205277310587 105279 298 267 67 -12 +1 +1 -2 +7 -0.1
▸ Career projection (2028+) — MLB context, MLB playing time (PA × MLB%)
202820 MLB MLEBOS 34% 154138 29513 13432 41 210284324608 114282 288 275 72 -5 +0 +0 -1 +3 -0.2
202921 MLB MLEBOS 48% 260233 49825 22723 71 214289335624 121283 288 282 77 -7 +1 +0 -2 +6 -0.2
203022 MLB MLEBOS 54% 368330 721238 311004 92 218292344637 127285 278 287 80 -9 +1 +1 -2 +8 -0.1
203123 MLB MLEBOS 57% 438393 8714410 371185 113 221295351647 131286 278 291 83 -9 +1 +1 -3 +9 0.0
203224 MLB MLEBOS 57% 481432 9616411 411285 123 223297357654 134287 279 294 85 -9 +1 +2 -3 +10 0.2
203325 MLB MLEBOS 57% 507454 10117412 431355 123 223298358656 135287 278 294 85 -9 +1 +3 -3 +11 0.3
203426 MLB MLEBOS 56% 521466 10317412 441386 133 223298358655 135287 268 294 85 -9 +1 +3 -3 +11 0.3
203527 MLB MLEBOS 55% 525470 10417412 441406 123 222297355652 133286 278 293 84 -10 +1 +3 -3 +11 0.2
203628 MLB MLEBOS 55% 520466 10317412 441405 113 220295350645 130285 278 290 82 -11 +1 +2 -3 +11 0.0
202820 MLB CTXBOS 34% 5348 10201 4151 10 215288330618 115290 288 279 72 -2 +0 +0 -0 +1 -0.1
202921 MLB CTXBOS 48% 126114 24412 10351 31 220293341635 122291 288 286 77 -3 +0 +0 -1 +3 -0.1
203022 MLB CTXBOS 54% 200179 40724 17542 51 223297350647 127293 278 291 80 -5 +1 +0 -1 +4 -0.1
203123 MLB CTXBOS 57% 248222 50925 21673 61 226300358657 132294 278 295 83 -5 +1 +1 -1 +5 0.0
203224 MLB CTXBOS 57% 272244 551026 23723 72 228302363665 135295 268 298 85 -5 +1 +1 -2 +6 0.1
203325 MLB CTXBOS 57% 286257 591127 24763 72 229303364667 135296 278 299 85 -5 +1 +1 -2 +6 0.2
203426 MLB CTXBOS 56% 294264 601127 25783 72 228302364666 136295 279 299 85 -5 +1 +2 -2 +6 0.2
203527 MLB CTXBOS 55% 291261 601127 25783 72 227301361663 134295 279 297 84 -5 +1 +2 -2 +6 0.1
203628 MLB CTXBOS 55% 285256 571026 24773 62 225299356656 131293 278 295 82 -6 +0 +1 -2 +6 -0.0
▸ Career Totals
▸ Career totals — MLB only (actual + projected)
Career— A+C — 20551845 415751545 17355222 4913 225299355654 130295 278 296 79 -42 +5 +8 -12 +45 0.4
/ 162G— A+C — 650584 13224514 551757 154 226301356657 130296 278 296 79 -13 +1 +3 -4 +14 0.1
Career— MLE — 42723823 8231343692 368116246 13535 215292341633 126282 279 285 79 -82 +10 +15 -23 +84 0.5
/ 162G— MLE — 650582 12420514 561777 215 213290337627 124279 279 285 79 -14 +2 +3 -4 +14 0.1

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 ROKFCL Red Sox · 198 PAwOBA .338 → .234 (−103)K% 26.3% → 37.8%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA26.26%÷1.000×1.440——37.82%
BB% (unintentional) /PA12.12%÷1.000×0.620—×1.0227.68%
HBP% /PA1.52%—×0.720—×1.0221.12%
Singles /BIP21.19%÷1.000×0.820×0.996×1.02217.69%
Doubles /BIP5.08%÷1.000×0.720×0.996×1.0223.73%
Triples /BIP3.39%÷1.000×0.720×0.996×1.0222.49%
Home runs /BIP5.08%÷1.000×0.780—×1.0224.06%

Factors used: level-wide ROK factors (no league-specific row for this league/era). Park (home-season share, regressed): no park row on file (treated as neutral) — applied at half strength. Age: age 18 vs a level average of 19.5 → +2.2% on BB/HBP/hit rates (1.5 yr younger than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×0.996.

Result: wOBA .338 → .234; ISO .188 → .130; BABIP .310 → .247. Both wOBAs use the same linear weights, so the change is the translation alone. The MLE line is not regressed to the mean — regression happens later, when seasons are blended into a projection (how).

2025 DSLDSL Red Sox Blue · 196 PAwOBA .349 → .246 (−103)K% 17.9% → 21.8%
ComponentRawPark ÷Level factor ×GB/FB ×Age ×= MLE
K% /PA17.86%÷0.997×1.220——21.85%
BB% (unintentional) /PA17.86%÷0.959×0.700—×1.02213.32%
HBP% /PA0.51%—×0.700—×1.0220.37%
Singles /BIP23.39%÷0.932×0.680×1.006×1.02217.55%
Doubles /BIP4.84%÷1.059×0.600×1.006×1.0222.82%
Triples /BIP3.23%÷1.150×0.600×1.006×1.0221.73%
Home runs /BIP1.61%÷0.920×0.470—×1.0220.84%

Factors used: level-wide DSL factors (no league-specific row for this league/era). Park (home-season share, regressed): HR 84, 1B 86, 2B 112, 3B 130, K 99, BB 92 — applied at half strength. Age: age 17 vs a level average of 18.5 → +2.2% on BB/HBP/hit rates (1.5 yr younger than average). Ground-ball/fly-ball mix moves 1B/2B/3B by ×1.006.

Result: wOBA .349 → .246; ISO .126 → .070; BABIP .317 → .221. Both wOBAs use the same linear weights, so the change is the translation alone. The MLE line is not regressed to the mean — regression happens later, when seasons are blended into a projection (how).