13
HRs allowed
12.1%
HR rate (pool)
11.1%
Overall HR/FB
4.13
FIP
4.61
xFIP
-0.48
FIP − xFIP gap
Leak meter
STINGY
LEAKY
35
season HR/FB pctile vs MLB pitchers — higher = more HR-prone
Tonight's read
vulnerability percentile · model flags
no model flags today
Vulnerability 35th pctile (season HR/FB pctile vs MLB pitchers)
Where he leaks
quality of contact allowed · season
Barrel% allowed
0.0%
Hard-Hit% allowed
78.0%
Fly-ball rate
—
avg HR 104.7 EV · 388 ft
max EV allowed 114.1
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 · 10 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 Kochanowicz.
Arsenal ledger
per-pitch damage against · season
PitchUseEVLAHRRV/100Damage
Sinker Hard
38.0%
88.0
-1.6°
3
-0.6
Changeup Offspeed
23.6%
79.6
-0.9°
1
+1.5
Fastball Hard
22.0%
82.8
27.8°
3
+0.1
Slider Breaking
16.4%
81.6
13.9°
0
-0.8
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 matchups107
HRs allowed (pool)13
Pool HR rate12.1%
Pool HR/game day1.08
Top-15 matchups12
HRs to top-151
Overall HR/FB11.1% 35
HR/9—
FIP4.13 53
xFIP4.61
FIP − xFIP-0.48 20
Barrel% allowed0.0%
Hard-Hit% allowed78.0%
FB%—
K/9—
BB/9—
WHIP—
IP—
Pool = tracked matchup population · pctile chips = MLB-wide percentile (hot ≥ 85) · as of 2026-07-16
Sinker
Hard · 38.0% usage
-0.6
run value against / 100 pitches
Avg EV against88.0 mph
Avg launch angle-1.6°
HRs allowed3
Pitches438
Changeup
Offspeed · 23.6% usage
+1.5
run value against / 100 pitches
Avg EV against79.6 mph
Avg launch angle-0.9°
HRs allowed1
Pitches272
Fastball
Hard · 22.0% usage
+0.1
run value against / 100 pitches
Avg EV against82.8 mph
Avg launch angle27.8°
HRs allowed3
Pitches253
Slider
Breaking · 16.4% usage
-0.8
run value against / 100 pitches
Avg EV against81.6 mph
Avg launch angle13.9°
HRs allowed0
Pitches189
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 Kochanowicz.
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 104.7 EV · 388 ft
10 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 12 scored game days · pool
DateStadiumMatchupsHRMax EV
2026-06-06
8
2
110.4
2026-05-31
9
1
109.2
2026-05-26
9
1
106.6
2026-05-20
9
1
114.1
2026-05-15
9
3
107.7
2026-05-09
9
2
112.6
2026-05-03
9
1
107.7
2026-04-27
9
1
110.0
2026-04-21
9
0
108.9
2026-04-10
9
1
111.4
2026-04-04
9
0
105.2
2026-03-29
9
0
108.7
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
park factor · wind · temp
Ballpark conditions unavailable — Jack Kochanowicz isn't on a scored slate with park & weather inputs.
Fences vs his leak
wall distance · damage overlay
Wall-distance overlays aren't tracked yet.
Venue splits
his HR/9 by venue
Per-venue HR splits aren't tracked yet.