23
HRs allowed
11.4%
HR rate (pool)
25.9%
Overall HR/FB
4.85
FIP
3.78
xFIP
+1.08
FIP − xFIP gap
Leak meter
STINGY
LEAKY
95
season HR/FB pctile vs MLB pitchers — higher = more HR-prone
Tonight's read
vulnerability percentile · model flags
Meltdown Risk
Vulnerability 95th pctile (season HR/FB pctile vs MLB pitchers)
Where he leaks
quality of contact allowed · season
Barrel% allowed
21.3%
Hard-Hit% allowed
68.0%
Fly-ball rate
—
avg HR 102.0 EV · 395 ft
max EV allowed 113.7
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 · 1 HR
30D · 3 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 Griffin Jax.
Arsenal ledger
per-pitch damage against · season
PitchUseEVLAHRRV/100Damage
Sweeper Breaking
24.5%
79.9
17.8°
4
-0.4
Sinker Hard
23.0%
81.6
11.2°
5
-0.7
Changeup Offspeed
22.9%
81.5
-2.1°
1
-1.0
Fastball Hard
17.7%
85.2
35.8°
4
+1.0
Curveball Breaking
9.0%
83.8
8.9°
0
-1.6
Cutter Hard
2.8%
84.1
19.4°
2
+1.4
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 matchups202
HRs allowed (pool)23
Pool HR rate11.4%
Pool HR/game day0.96
Top-15 matchups10
HRs to top-153
Overall HR/FB25.9% 95
HR/9—
FIP4.85 79
xFIP3.78
FIP − xFIP+1.08 93
Barrel% allowed21.3%
Hard-Hit% allowed68.0%
FB%—
K/9—
BB/9—
WHIP—
IP—
Pool = tracked matchup population · pctile chips = MLB-wide percentile (hot ≥ 85) · as of 2026-10-17
Sweeper
Breaking · 24.5% usage
-0.4
run value against / 100 pitches
Avg EV against79.9 mph
Avg launch angle17.8°
HRs allowed4
Pitches448
Sinker
Hard · 23.0% usage
-0.7
run value against / 100 pitches
Avg EV against81.6 mph
Avg launch angle11.2°
HRs allowed5
Pitches420
Changeup
Offspeed · 22.9% usage
-1.0
run value against / 100 pitches
Avg EV against81.5 mph
Avg launch angle-2.1°
HRs allowed1
Pitches418
Fastball
Hard · 17.7% usage
+1.0
run value against / 100 pitches
Avg EV against85.2 mph
Avg launch angle35.8°
HRs allowed4
Pitches323
Curveball
Breaking · 9.0% usage
-1.6
run value against / 100 pitches
Avg EV against83.8 mph
Avg launch angle8.9°
HRs allowed0
Pitches165
Cutter
Hard · 2.8% usage
+1.4
run value against / 100 pitches
Avg EV against84.1 mph
Avg launch angle19.4°
HRs allowed2
Pitches51
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 Griffin Jax.
BvP under 20 PA is noise — use it for pitch-mix memory, not projection. Context only: not part of the model score.
HR Log
23 allowed · scored pool
avg 102.0 EV · 395 ft
3 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
0
104.0
2026-09-20
9
1
106.0
2026-09-15
9
0
113.7
2026-09-09
9
1
109.2
2026-09-02
9
1
111.8
2026-08-08
9
1
112.1
2026-08-02
9
3
107.1
2026-07-28
9
1
107.0
2026-07-22
7
0
96.3
2026-07-17
9
3
109.9
2026-07-11
8
0
109.1
2026-07-06
8
2
107.2
2026-06-30
7
1
106.2
2026-06-24
6
0
113.0
2026-06-19
8
1
106.2
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 — Griffin Jax isn't on a scored slate with park & weather inputs.
Fences vs his leak
wall distance · damage overlay
Griffin Jax isn't on a scored slate — no park to compare his damage against.
Venue splits
HRs allowed by venue · pool
VenueFacedHRRate
111
15
14%
18
3
17%
16
1
6%
9
1
11%
9
1
11%
9
1
11%
HRs allowed ÷ scored matchups at each park · top 6 of 10. Rate is per scored matchup, not HR/9 — box-score innings aren't tracked.
Common questions about Griffin Jax
How many home runs has Griffin Jax allowed this season?
Griffin Jax has allowed 23 home runs across 24 scored game days in the TheHomeRuns pool this season.
Which batters have homered off Griffin Jax?
In the TheHomeRuns scored pool, the batters with home runs against Griffin Jax include Andrew Benintendi (1), Austin Wynns (1), Ben Rice (1) and 20 more.
Model output for entertainment and research. Not gambling advice.