2026
15-Day HR Leaders
1 Matt Olson 7 HRs · 2 Ceddanne Rafaela 5 HRs · 3 Sal Stewart 5 HRs · 4 Kyle Stowers 4 HRs · 5 Pete Crow-Armstrong 4 HRs · 6 Ozzie Albies 4 HRs · 7 Wilyer Abreu 4 HRs · 8 Dillon Dingler 4 HRs · 9 Chase Meidroth 3 HRs · 10 Ezequiel Duran 3 HRs · 11 Royce Lewis 3 HRs · 12 Randy Arozarena 3 HRs 1 Matt Olson 7 HRs · 2 Ceddanne Rafaela 5 HRs · 3 Sal Stewart 5 HRs · 4 Kyle Stowers 4 HRs · 5 Pete Crow-Armstrong 4 HRs · 6 Ozzie Albies 4 HRs · 7 Wilyer Abreu 4 HRs · 8 Dillon Dingler 4 HRs · 9 Chase Meidroth 3 HRs · 10 Ezequiel Duran 3 HRs · 11 Royce Lewis 3 HRs · 12 Randy Arozarena 3 HRs
Jack Perkins

Jack Perkins

RHP ATH
68 matchups scored · 9 game days · 9 listed today
13
HRs allowed
19.1%
HR rate (pool)
12.2%
Overall HR/FB
3.75
FIP
3.85
xFIP
-0.09
FIP − xFIP gap
#8
Leakiest SP today (of 30, by FIP−xFIP)
Leak meter STINGY
LEAKY 44
season HR/FB pctile vs MLB pitchers — higher = more HR-prone
Tonight's read
vulnerability percentile · model flags
44
no model flags today
Vulnerability 44th pctile (season HR/FB pctile vs MLB pitchers)
5 of 9 listed bats hold the platoon edge
Where he leaks
quality of contact allowed · season
Barrel% allowed
0.0%
0.0%
Hard-Hit% allowed
63.8%
63.8%
Fly-ball rate
avg HR 101.2 EV · 387 ft max EV allowed 109.0
Batted-ball xSLG splits and HR spray direction aren't tracked for pitchers yet.
Recent form
HR allowed by scored game day
2026-06-05 · 1 HR 2026-06-16 · 2 HR 2026-06-21 · 3 HR 2026-07-03 · 4 HR 2026-07-27 · 1 HR 2026-08-01 · 2 HR
7D · 3 HR 15D · 3 HR 30D · 7 HR ↑
Dot size = HRs allowed that game day · scored pool only.
ATH @ BOS 7:10p · Fenway Park Park 0.90 Wind 2.0 SW out Roof open · 91°F BP FIP 5.01 BP HR 15.4% 3L / 4R listed (+2S) · lineup: confirmed
Threat Matrix
tonight's lineup × his arsenal families
cell = batter Barrel% vs that pitch family — higher runs hotter cold hot
FB 49.0% BRK 31.1% OFF 19.7% Overall Score
Neutral · 1
32 Wilyer Abreu L Edge
12.3% 15.2% 12.3% 13.0% C 54
Long shots · 8 — below the fade line
3.8% 6.1% 13.0% 5.8% D 46
7.8% 8.8% 15.4% 8.8% D 44
113 Jarren Duran L Edge
12.1% 7.7% 8.1% 10.0% D 43
148 Anthony Seigler S Edge
8.3% 6.7% 0.0% 6.2% D 38
160 Jake Rogers R
8.3% 6.2% 0.0% 7.4% D 37
172 Caleb Durbin R
3.0% 1.3% 3.3% 2.6% D 35
185 Masataka Yoshida L Edge
4.6% 0.0% 2.4% 3.4% D 34
227 Nick Sogard S Edge
0.0% 0.0% 0.0% 0.0% D 21
Read the columns: the fastball family (49.0% usage) carries his damage — FB is the leak. 5 of 9 listed bats hold the platoon edge. Cells are each batter's season damage vs that family (not vs this pitcher specifically).
Arsenal ledger
per-pitch damage against · season
PitchUseEVLAHRRV/100Damage
Fastball Hard 35.6% 82.7 30.0° 7 +1.6
Sweeper Breaking 28.9% 80.9 14.7° 3 -0.4
Changeup Offspeed 19.7% 80.9 -0.4° 0 -1.1
Cutter Hard 9.9% 82.0 13.1° 1 +1.2
Sinker Hard 3.5% 84.7 1.4° 2 +5.7
Slider Breaking 2.2% 77.7 3.6° 0 -5.7
RV/100 = run value against per 100 pitches — higher = more damage allowed. Damage bar is scaled across his own arsenal.
Full ledger
pool + season datapoints · pctile-chipped where ranked
Pool matchups68
HRs allowed (pool)13
Pool HR rate19.1%
Pool HR/game day1.44
Top-15 matchups3
HRs to top-150
Overall HR/FB12.2% 44
HR/9
FIP3.75 37
xFIP3.85
FIP − xFIP-0.09 39
Barrel% allowed0.0%
Hard-Hit% allowed63.8%
FB%
K/9
BB/9
WHIP
IP
Pool = tracked matchup population · pctile chips = MLB-wide percentile (hot ≥ 85) · as of 2026-08-07
Fastball
Hard · 35.6% usage
+1.6 run value against / 100 pitches
Avg EV against82.7 mph
Avg launch angle30.0°
HRs allowed7
Pitches444
Sweeper
Breaking · 28.9% usage
-0.4 run value against / 100 pitches
Avg EV against80.9 mph
Avg launch angle14.7°
HRs allowed3
Pitches361
Changeup
Offspeed · 19.7% usage
-1.1 run value against / 100 pitches
Avg EV against80.9 mph
Avg launch angle-0.4°
HRs allowed0
Pitches246
Cutter
Hard · 9.9% usage
+1.2 run value against / 100 pitches
Avg EV against82.0 mph
Avg launch angle13.1°
HRs allowed1
Pitches124
Sinker
Hard · 3.5% usage
+5.7 run value against / 100 pitches
Avg EV against84.7 mph
Avg launch angle1.4°
HRs allowed2
Pitches44
Slider
Breaking · 2.2% usage
-5.7 run value against / 100 pitches
Avg EV against77.7 mph
Avg launch angle3.6°
HRs allowed0
Pitches28
Usage by handedness
what tonight's lefties/righties will see
Per-handedness pitch usage isn't tracked yet — the arsenal cache is a season aggregate.
Zone map
damage by location
Per-zone damage isn't tracked yet for pitchers.
Pitcher vs. Batter
career PA vs tonight's listed order
BatterPAHHRKwOBALast damage
Wilyer Abreu L 6 0 0 0 .000
Ceddanne Rafaela R 6 0 0 0 .000 HR 2026-07-27 (scored pool)
Andruw Monasterio R 6 0 0 0 .348
Jarren Duran L 6 0 0 3 .000
Anthony Seigler S 3 0 0 0 .000
Jake Rogers R 6 3 3 0 1.350 HR 2026-07-09 · 4-Seam Fastball · 97 EV
Caleb Durbin R 6 0 0 3 .000
Masataka Yoshida L 9 0 0 0 .232
Nick Sogard S 0 never faced
BvP under 20 PA is noise — use it for pitch-mix memory, not projection. Context only: not part of the model score.
HR Log
13 allowed · scored pool
avg 101.2 EV · 387 ft 7 in last 30D
DateBatterRankScoreStadiumEVLADist
2026-08-01 Kevin Mcgonigle #115 47 Sutter Health Park 99.7 31.0° 386
2026-08-01 Gleyber Torres #123 46 Sutter Health Park 100.3 31.0° 396
2026-07-27 Ceddanne Rafaela #46 50 Sutter Health Park 98.4 40.0° 382
2026-07-03 Owen Caissie #20 59 Sutter Health Park 101.2 24.0° 390
2026-07-03 Kyle Stowers #68 52 Sutter Health Park 106.8 24.0° 388
2026-07-03 Heriberto Hernandez #81 48 Sutter Health Park 102.0 30.0° 414
2026-07-03 Jakob Marsee #163 37 Sutter Health Park 106.2 24.0° 381
2026-06-21 Zach Neto #19 68 Sutter Health Park 94.4 33.0° 391
2026-06-21 Donovan Walton #70 57 Sutter Health Park 99.5 34.0° 391
2026-06-21 Denzer Guzman #163 37 Sutter Health Park 101.6 23.0° 416
2026-06-16 Brandon Lowe #29 65 Sutter Health Park 104.6 24.0° 371
2026-06-16 Bryan Reynolds #82 53 Sutter Health Park 97.3 31.0° 350
2026-06-05 Isaac Paredes #125 43 Minute Maid Park 103.9 38.0° 376
Every row is a scored-pool matchup — HRs to unscored batters aren't tracked. Pitch type, count, and field direction aren't in the pool log yet.
Game-day log
last 9 scored game days · pool
DateStadiumMatchupsHRMax EV
2026-08-01 Sutter Health Park 7 2 103.7
2026-07-27 Sutter Health Park 8 1 102.8
2026-07-21 Chase Field 7 0 104.1
2026-07-03 Sutter Health Park 8 4 108.6
2026-06-27 Angel Stadium 8 0 109.0
2026-06-21 Sutter Health Park 7 3 104.6
2026-06-16 Sutter Health Park 7 2 106.0
2026-06-10 Las Vegas Ballpark 9 0 101.1
2026-06-05 Minute Maid Park 7 1 105.7
Box-score start lines (IP · H · ER · K · BB · pitch counts) aren't tracked yet — this is his scored-pool day log, matchups our model actually graded.
Tonight — Fenway Park
open-air · game-window conditions
Park Factor 0.897 Wind 2 mph from SW Temp 91°F Roof Open
TimeWindTempFIT
7:10p 2 91° +1
8:10p 2 91° +1
9:10p 2 91° +1
10:10p 2 91° +1
11:10p 2 91° +1
+1
Neutral alignment
park + weather FIT · batter-neutral signal
Game-window avg wind 2 mph from SW
FIT = park + game-window weather HR signal, batter-neutral. Per-batter spray overlays live on each batter's profile.
Fences vs his leak
wall distance · damage overlay
LF
310ft
short
CF
390ft
short
RF
302ft
short
vs LHH → RF
354ft
6 HRs allowed
vs RHH → LF
323ft
6 HRs allowed · short porch
Shortest: RF 302 ft HRs allowed avg 387 ft · n=13
Green Monster (37 ft) in LF; straightaway CF 390, deep RCF triangle ~420; Pesky's Pole 302 in RF
Fence marks are published; power-alley + pull-side depths come from the park's outfield geometry, calibrated to those marks. We don't track HR spray direction — pull side is inferred from batter handedness (LHH→RF, RHH→LF), not a measured read.
Venue splits
HRs allowed by venue · pool
VenueFacedHRRate
Sutter Health Park 37 12 32%
Minute Maid Park 7 1 14%
Las Vegas Ballpark 9 0 0%
Angel Stadium 8 0 0%
Chase Field 7 0 0%
HRs allowed ÷ scored matchups at each park. Rate is per scored matchup, not HR/9 — box-score innings aren't tracked.
Six home runs to freedom

Jack Perkins's full pitcher profile is waiting

Upgrade to see the Threat Matrix, vulnerability signals, arsenal damage, BvP history, HR log, and ballpark conditions.

No card. Your first day includes the complete board.
68 more waiting in the on-deck circle
THR 3.3.152 · build 657

Yesterday's results + tonight's board. Every morning.

Yesterday's board graded name-by-name — hits and misses — plus tonight's ranked board (scores and matchups; batter names are Pro), free in your inbox before first pitch.

No spam. Unsubscribe anytime. Just picks and results.