1
HRs allowed
14.3%
HR rate (pool)
15.9%
Overall HR/FB
3.05
FIP
3.22
xFIP
-0.17
FIP − xFIP gap
Leak meter
STINGY
LEAKY
76
season HR/FB pctile vs MLB pitchers — higher = more HR-prone
Tonight's read
vulnerability percentile · model flags
no model flags today
Vulnerability 76th pctile (season HR/FB pctile vs MLB pitchers)
Where he leaks
quality of contact allowed · season
Barrel% allowed
0.0%
Hard-Hit% allowed
71.4%
Fly-ball rate
—
avg HR 108.4 EV · 402 ft
max EV allowed 108.4
Batted-ball xSLG splits and HR spray direction aren't tracked for pitchers yet.
Recent form
HR allowed by scored game day
Not enough scored game days for a trend line yet.
7D · 1 HR
15D · 1 HR
30D · 1 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 Will Klein.
Arsenal ledger
per-pitch damage against · season
PitchUseEVLAHRRV/100Damage
Fastball Hard
50.6%
85.2
19.4°
2
-1.2
Sweeper Breaking
28.0%
79.6
8.1°
0
-1.2
Curveball Breaking
16.7%
83.6
-1.5°
0
+2.6
Slider Breaking
4.8%
86.4
20.4°
0
+3.2
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 matchups7
HRs allowed (pool)1
Pool HR rate14.3%
Pool HR/game day1.0
Top-15 matchups1
HRs to top-150
Overall HR/FB15.9% 76
HR/9—
FIP3.05 16
xFIP3.22
FIP − xFIP-0.17 37
Barrel% allowed0.0%
Hard-Hit% allowed71.4%
FB%—
K/9—
BB/9—
WHIP—
IP—
Pool = tracked matchup population · pctile chips = MLB-wide percentile (hot ≥ 85) · as of 2026-07-20
Fastball
Hard · 50.6% usage
-1.2
run value against / 100 pitches
Avg EV against85.2 mph
Avg launch angle19.4°
HRs allowed2
Pitches340
Sweeper
Breaking · 28.0% usage
-1.2
run value against / 100 pitches
Avg EV against79.6 mph
Avg launch angle8.1°
HRs allowed0
Pitches188
Curveball
Breaking · 16.7% usage
+2.6
run value against / 100 pitches
Avg EV against83.6 mph
Avg launch angle-1.5°
HRs allowed0
Pitches112
Slider
Breaking · 4.8% usage
+3.2
run value against / 100 pitches
Avg EV against86.4 mph
Avg launch angle20.4°
HRs allowed0
Pitches32
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 Will Klein.
BvP under 20 PA is noise — use it for pitch-mix memory, not projection. Context only: not part of the model score.
HR Log
1 allowed · scored pool
avg 108.4 EV · 402 ft
1 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 1 scored game days · pool
DateStadiumMatchupsHRMax EV
2026-07-19
7
1
108.4
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 — Will Klein 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.