← BackSeth Halvorsen
COL · RHP · 2024
11.3 IP · 46 BF · 177 pitches · 2024 season
MED Descriptive — not a forecast
117
Stuff+
98th percentile
108
ABStuff+
96th percentile
114
Pitching+
99th percentile
28.3%
K%
4.3%
BB%
4.30
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 2024 graded MLB pitchers · 11.3 IP · 46 BF · 177 pitches · 2024 season
Small sample: 11.3 IP · 46 BF · 177 pitches · 2024 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+117
98th percentile
ABStuff+108
96th percentile
Whiff%
n=46 BF — too few to rank
27.3%CSW%
n=46 BF — too few to rank
38.6%Results
Pitching+114
99th percentile
RV/100
n=46 BF — too few to rank
+2.15FIP
n=46 BF — too few to rank
4.30RA/9
n=46 BF — too few to rank
9.53GB%
n=46 BF — too few to rank
46.7%Command
K%
n=46 BF — too few to rank
28.3%BB%
n=46 BF — too few to rank
4.3%K-BB%
n=46 BF — too few to rank
23.9%Velo
n=46 BF — too few to rank
95.2How 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 2024 graded MLB pitchers · 11.3 IP · 46 BF · 177 pitches · 2024 season
Swing & miss
Z-Whf%
n=46 BF — too few to rank
19.7%O-Whf%
n=46 BF — too few to rank
58.8%Chase%
n=46 BF — too few to rank
21.8%Z-Con%
n=46 BF — too few to rank
80.3%O-Con%
n=46 BF — too few to rank
41.2%SwStr%
n=46 BF — too few to rank
31.6%PutAwy%
n=46 BF — too few to rank
17.5%Approach
Zone%
n=46 BF — too few to rank
55.9%Z-Swg%
n=46 BF — too few to rank
71.7%Swing%
n=46 BF — too few to rank
49.7%CS%
n=46 BF — too few to rank
22.1%F-Str%
n=46 BF — too few to rank
57.8%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
FF-2.7/-3.4FS+0.7/-3.1SL-3.8/+1.5ring = slot expectation ±1σ/2σ · HB mirrored for LHP · descriptive
Release Traits
Height: 5.59 ft (±0.18)
Side: -2.49 ft (±0.28)
Extension: 6.91 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%
FF
16
50.0
12.5
31.2
0.0
89.6
21.8
56.2
FS
10
40.0
30.0
10.0
0.0
81.2
20.9
20.0
SL
4
50.0
50.0
0.0
0.0
78.5
12.4
75.0
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
3
7th pct
Effective mix
2.6
18th pct
Separation
17.8
26th pct
Shape scatter
3.3 in
73rd pct
Velo range
11.0 mph
37th pct
FF · FS · SL
2024 season, 177 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 Seth Halvorsen — under 200 located pitches, which is the sample the mix decomposition is defined on.