← BackJesse Hahn
SEA · RHP · 2025
3.7 IP · 23 BF · 79 pitches · 2025 season
LOW Descriptive — not a forecast
117
Stuff+
108
ABStuff+
100
Pitching+
13.0%
K%
8.7%
BB%
7.25
FIP
Grades describe this season's stuff and run prevention. They are not forecasts: on clean season pairs the model has not beaten naive persistence (RESULTS-MLB §13), so nothing here projects next season.
Percentile rankings
vs 2025 graded MLB pitchers · 3.7 IP · 23 BF · 79 pitches · 2025 season
Small sample: 3.7 IP · 23 BF · 79 pitches · 2025 season. Rows need 50 batters faced to rank (model grades 100 pitches); below that they show the sample (n=) instead of a percentile, so nothing here reads as elite or poor on a handful of hitters.
Stuff
Stuff+
n=79 pitches — too few to rank
117ABStuff+
n=79 pitches — too few to rank
108Whiff%
n=23 BF — too few to rank
22.6%CSW%
n=23 BF — too few to rank
32.8%Results
Pitching+
n=79 pitches — too few to rank
100RV/100
n=23 BF — too few to rank
-2.60FIP
n=23 BF — too few to rank
7.25RA/9
n=23 BF — too few to rank
0.00GB%
n=23 BF — too few to rank
75.0%Command
K%
n=23 BF — too few to rank
13.0%BB%
n=23 BF — too few to rank
8.7%K-BB%
n=23 BF — too few to rank
4.3%Velo
n=23 BF — too few to rank
90.0How to read these
Each row is his rank, 1 to 99, among all graded MLB pitchers this season; the tick is the median. Green is good for him, red bad, whatever the stat's direction (a low FIP ranks high). Grey circles are descriptive rates with no good direction, and n= in place of a rank means too few events to rank. Grades are descriptive, not forecasts.
Percentile rankings
Raw plate discipline · vs 2025 graded MLB pitchers · 3.7 IP · 23 BF · 79 pitches · 2025 season
Swing & miss
Z-Whf%
n=23 BF — too few to rank
13.0%O-Whf%
n=23 BF — too few to rank
50.0%Chase%
n=23 BF — too few to rank
20.0%Z-Con%
n=23 BF — too few to rank
87.0%O-Con%
n=23 BF — too few to rank
50.0%SwStr%
n=23 BF — too few to rank
25.3%PutAwy%
n=23 BF — too few to rank
21.4%Approach
Zone%
n=23 BF — too few to rank
49.4%Z-Swg%
n=23 BF — too few to rank
59.0%Swing%
n=23 BF — too few to rank
39.2%CS%
n=23 BF — too few to rank
21.3%F-Str%
n=23 BF — too few to rank
34.8%How to read these
Raw rates with this season's descriptive ranks. Sample-adjusted (shrunk) rankings are not shown yet: the reliability constants behind them were measured on college data and are being re-measured on MLB. Until then a small sample here is a small sample — hover the leaderboard column for its event count.
ArsenalKey columns; every column is on the Arsenal tab
Movement Profile
SI-2.3/-1.9SW-6.2/+7.1CB-6.9/+4.1FFring = slot expectation ±1σ/2σ · HB mirrored for LHP · descriptive
Release Traits
Height: 5.67 ft (±0.19)
Side: -2.01 ft (±0.14)
Extension: 6.47 ft
Season means; the ± is the SD across his pitches. Per-pitch release plots land in a later wave.
Batted Ball Against
Pitch
N_BIP
GB%
FB%
LD%
PU%
Avg EV
Avg LA
HrdHit%
SI
13
76.9
7.7
15.4
0.0
84.3
6.2
53.8
SW
2
50.0
0.0
50.0
0.0
102.2
0.5
100.0
CB
1
100.0
0.0
0.0
0.0
87.7
-4.5
0.0
Every pitch type he threw, ordered by balls in play. Rows under 5 BIP are dimmed rather than dropped — a slider put in play twice is a fact about the slider.
Arsenal
Pitches
4
27th pct
Effective mix
3.2
39th pct
Separation
31.4
100th pct
Shape scatter
2.9 in
29th pct
Velo range
15.9 mph
89th pct
SI · SW · CB · FF
2025 season, 79 pitches; percentiles vs MLB pitchers with 100+ that season. A description of the arsenal, not a grade: none of these predicted next season beyond Pitching+ and his own prior year. For shape scatter a higher percentile is MORE scatter.
Location value
Not published for Jesse Hahn — under 200 located pitches, which is the sample the mix decomposition is defined on.