21
HRs allowed
15.7%
HR rate (pool)
16.2%
Overall HR/FB
4.28
FIP
4.0
xFIP
+0.27
FIP − xFIP gap
Leak meter
STINGY
LEAKY
73
season HR/FB pctile vs MLB pitchers — higher = more HR-prone
Tonight's read
vulnerability percentile · model flags
no model flags today
Vulnerability 73th pctile (season HR/FB pctile vs MLB pitchers)
Where he leaks
quality of contact allowed · season
Barrel% allowed
19.4%
Hard-Hit% allowed
68.1%
Fly-ball rate
—
avg HR 101.9 EV · 387 ft
max EV allowed 110.1
Batted-ball xSLG splits and HR spray direction aren't tracked for pitchers yet.
Recent form
HR allowed by scored game day
7D · 3 HR
15D · 4 HR
30D · 6 HR
Dot size = HRs allowed that game day · scored pool only.
Threat Matrix
tonight's lineup × his arsenal families
No lineup yet — the Threat Matrix fills in when today's slate lists batters against Jack Perkins.
Arsenal ledger
per-pitch damage against · season
PitchUseEVLAHRRV/100Damage
Fastball Hard
29.4%
82.6
31.5°
9
+1.6
Sweeper Breaking
28.4%
81.4
15.4°
7
-0.7
Changeup Offspeed
18.8%
79.0
-3.4°
0
-1.1
Cutter Hard
15.3%
82.1
9.4°
3
+0.7
Sinker Hard
5.5%
84.4
9.5°
3
+2.8
Curveball Breaking
1.6%
80.9
10.5°
0
+0.9
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 matchups134
HRs allowed (pool)21
Pool HR rate15.7%
Pool HR/game day1.24
Top-15 matchups14
HRs to top-153
Overall HR/FB16.2% 73
HR/9—
FIP4.28 60
xFIP4.0
FIP − xFIP+0.27 65
Barrel% allowed19.4%
Hard-Hit% allowed68.1%
FB%—
K/9—
BB/9—
WHIP—
IP—
Pool = tracked matchup population · pctile chips = MLB-wide percentile (hot ≥ 85) · as of 2026-11-06
Fastball
Hard · 29.4% usage
+1.6
run value against / 100 pitches
Avg EV against82.6 mph
Avg launch angle31.5°
HRs allowed9
Pitches607
Sweeper
Breaking · 28.4% usage
-0.7
run value against / 100 pitches
Avg EV against81.4 mph
Avg launch angle15.4°
HRs allowed7
Pitches587
Changeup
Offspeed · 18.8% usage
-1.1
run value against / 100 pitches
Avg EV against79.0 mph
Avg launch angle-3.4°
HRs allowed0
Pitches389
Cutter
Hard · 15.3% usage
+0.7
run value against / 100 pitches
Avg EV against82.1 mph
Avg launch angle9.4°
HRs allowed3
Pitches315
Sinker
Hard · 5.5% usage
+2.8
run value against / 100 pitches
Avg EV against84.4 mph
Avg launch angle9.5°
HRs allowed3
Pitches114
Curveball
Breaking · 1.6% usage
+0.9
run value against / 100 pitches
Avg EV against80.9 mph
Avg launch angle10.5°
HRs allowed0
Pitches34
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
No listed order yet — BvP rows appear when today's slate lists batters against Jack Perkins.
BvP under 20 PA is noise — use it for pitch-mix memory, not projection. Context only: not part of the model score.
HR Log
21 allowed · scored pool
avg 101.9 EV · 387 ft
6 in last 30D
DateBatterRankScoreStadiumEVLADist
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 15 scored game days · pool
DateStadiumMatchupsHRMax EV
2026-09-26
9
3
109.0
2026-09-20
9
0
107.8
2026-09-15
9
1
107.0
2026-09-08
8
1
108.4
2026-09-03
7
0
110.1
2026-08-29
7
1
106.0
2026-08-12
8
1
104.7
2026-08-07
9
1
108.4
2026-08-01
7
2
103.7
2026-07-27
8
1
102.8
2026-07-21
7
0
104.1
2026-07-03
8
4
108.6
2026-06-27
8
0
109.0
2026-06-21
7
3
104.6
2026-06-16
7
2
106.0
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
park factor · wind · temp
Ballpark conditions unavailable — Jack Perkins isn't on a scored slate with park & weather inputs.
Fences vs his leak
wall distance · damage overlay
Jack Perkins isn't on a scored slate — no park to compare his damage against.
Venue splits
HRs allowed by venue · pool
VenueFacedHRRate
69
18
26%
9
1
11%
9
1
11%
7
1
14%
9
0
0%
9
0
0%
HRs allowed ÷ scored matchups at each park · top 6 of 9. Rate is per scored matchup, not HR/9 — box-score innings aren't tracked.
Common questions about Jack Perkins
How many home runs has Jack Perkins allowed this season?
Jack Perkins has allowed 21 home runs across 17 scored game days in the TheHomeRuns pool this season.
Which batters have homered off Jack Perkins?
In the TheHomeRuns scored pool, the batters with home runs against Jack Perkins include Isaac Paredes (2), Zach Neto (2), Brandon Lowe (1) and 18 more.
Model output for entertainment and research. Not gambling advice.