17
HRs allowed
10.1%
HR rate (pool)
17.3%
Overall HR/FB
4.86
FIP
4.56
xFIP
+0.31
FIP − xFIP gap
Leak meter
STINGY
LEAKY
79
season HR/FB pctile vs MLB pitchers — higher = more HR-prone
Tonight's read
vulnerability percentile · model flags
no model flags today
Vulnerability 79th pctile (season HR/FB pctile vs MLB pitchers)
Where he leaks
quality of contact allowed · season
Barrel% allowed
23.2%
Hard-Hit% allowed
81.5%
Fly-ball rate
—
avg HR 106.2 EV · 410 ft
max EV allowed 113.6
Batted-ball xSLG splits and HR spray direction aren't tracked for pitchers yet.
Recent form
HR allowed by scored game day
7D · 1 HR
15D · 3 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 Zac Gallen.
Arsenal ledger
per-pitch damage against · season
PitchUseEVLAHRRV/100Damage
Fastball Hard
37.0%
86.7
20.8°
9
+1.4
Slider Breaking
21.1%
84.1
7.0°
5
+1.9
Knuckle Curve Breaking
18.6%
84.2
-0.6°
2
+2.9
Changeup Offspeed
17.8%
84.2
8.7°
1
-1.4
Sinker Hard
5.5%
86.1
16.2°
2
+3.3
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 matchups168
HRs allowed (pool)17
Pool HR rate10.1%
Pool HR/game day0.85
Top-15 matchups5
HRs to top-152
Overall HR/FB17.3% 79
HR/9—
FIP4.86 78
xFIP4.56
FIP − xFIP+0.31 67
Barrel% allowed23.2%
Hard-Hit% allowed81.5%
FB%—
K/9—
BB/9—
WHIP—
IP—
Pool = tracked matchup population · pctile chips = MLB-wide percentile (hot ≥ 85) · as of 2026-08-30
Fastball
Hard · 37.0% usage
+1.4
run value against / 100 pitches
Avg EV against86.7 mph
Avg launch angle20.8°
HRs allowed9
Pitches629
Slider
Breaking · 21.1% usage
+1.9
run value against / 100 pitches
Avg EV against84.1 mph
Avg launch angle7.0°
HRs allowed5
Pitches359
Knuckle Curve
Breaking · 18.6% usage
+2.9
run value against / 100 pitches
Avg EV against84.2 mph
Avg launch angle-0.6°
HRs allowed2
Pitches315
Changeup
Offspeed · 17.8% usage
-1.4
run value against / 100 pitches
Avg EV against84.2 mph
Avg launch angle8.7°
HRs allowed1
Pitches302
Sinker
Hard · 5.5% usage
+3.3
run value against / 100 pitches
Avg EV against86.1 mph
Avg launch angle16.2°
HRs allowed2
Pitches93
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 Zac Gallen.
BvP under 20 PA is noise — use it for pitch-mix memory, not projection. Context only: not part of the model score.
HR Log
17 allowed · scored pool
avg 106.2 EV · 410 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
2026-07-07
6
0
98.6
2026-07-01
8
1
110.7
2026-06-26
8
2
111.3
2026-06-25
8
0
—
2026-06-20
8
1
107.7
2026-06-14
8
2
110.0
2026-06-09
8
0
109.6
2026-06-03
7
1
107.8
2026-05-29
9
3
113.6
2026-05-23
9
1
111.4
2026-05-18
9
1
112.3
2026-05-12
9
1
109.1
2026-05-07
9
1
111.1
2026-05-01
9
0
108.7
2026-04-25
9
0
110.4
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 — Zac Gallen isn't on a scored slate with park & weather inputs.
Fences vs his leak
wall distance · damage overlay
Zac Gallen isn't on a scored slate — no park to compare his damage against.
Venue splits
HRs allowed by venue · pool
VenueFacedHRRate
68
6
9%
9
3
33%
9
2
22%
8
2
25%
8
2
25%
9
1
11%
HRs allowed ÷ scored matchups at each park · top 6 of 13. Rate is per scored matchup, not HR/9 — box-score innings aren't tracked.
Common questions about Zac Gallen
How many home runs has Zac Gallen allowed this season?
Zac Gallen has allowed 17 home runs across 20 scored game days in the TheHomeRuns pool this season.
Which batters have homered off Zac Gallen?
In the TheHomeRuns scored pool, the batters with home runs against Zac Gallen include Willy Adames (3), Alec Bohm (1), Andy Pages (1) and 41 more.
Model output for entertainment and research. Not gambling advice.