← BackTony Gonsolin
LAD · RHP · 2023
96.3 IP · 435 BF · 1,663 pitches · 2023 season
HIGH Descriptive — not a forecast
93
Stuff+
17th percentile
98
ABStuff+
30th percentile
96
Pitching+
20th percentile
18.9%
K%
33th percentile
9.0%
BB%
46th percentile
5.96
FIP
25th percentile
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 2023 graded MLB pitchers · 96.3 IP · 435 BF · 1,663 pitches · 2023 season
Stuff
Stuff+93
17th percentile
ABStuff+98
30th percentile
Whiff%19.6%
25th percentile
CSW%31.0%
21th percentile
Results
Pitching+96
20th percentile
RV/100+0.31
64th percentile
FIP5.96
25th percentile
RA/96.54
20th percentile
GB%36.3%
23th percentile
Command
K%18.9%
33th percentile
BB%9.0%
46th percentile
K-BB%9.9%
34th percentile
Velo87.1
23th percentile
How 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 2023 graded MLB pitchers · 96.3 IP · 435 BF · 1,663 pitches · 2023 season
Swing & miss
Z-Whf%11.1%
18th percentile
O-Whf%36.9%
36th percentile
Chase%30.3%
69th percentile
Z-Con%88.9%
18th percentile
O-Con%63.1%
36th percentile
SwStr%24.3%
18th percentile
PutAwy%14.9%
25th percentile
Approach
Zone%46.3%
26th percentile
Z-Swg%71.6%
83th percentile, descriptive, no good or bad direction
Swing%49.4%
74th percentile
CS%18.7%
28th percentile
F-Str%51.8%
61th percentile
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+1.4/-1.0FS-0.7/-4.3SLCBring = slot expectation ±1σ/2σ · HB mirrored for LHP · descriptive
Release Traits
Height: 6.06 ft (±0.10)
Side: -0.97 ft (±0.15)
Extension: 5.97 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
120
27.5
41.7
18.3
0.0
84.1
30.7
49.2
FS
91
47.3
20.9
25.3
0.0
80.5
4.4
33.0
SL
66
34.8
25.8
31.8
0.0
79.8
21.7
36.4
CB
29
41.4
31.0
27.6
0.0
84.0
3.8
51.7
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
35th pct
Effective mix
3.7
66th pct
Separation
20.9
60th pct
Shape scatter
3.1 in
51st pct
Velo range
11.6 mph
42nd pct
FF · FS · SL · CB
2023 season, 1,663 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
runs per 100 pitches vs league
Total
−0.01
49th percentile
Where he throws
−0.10
33th percentile
Which pitch there
+0.08
77th percentile
Heart29.9%
+132.31/100
Shadow38.8%
+150.11/100
Chase21.8%
−277.79/100
Waste9.5%
−492.99/100
What makes up the total
chase · FB5.7%−0.29
heart · FB15.7%+0.28
shadow · CH10.9%+0.26
waste · CH3.2%−0.15
shadow · FB16.5%+0.13
12 other locations−0.25
Total−0.01
Pitcher-positive, centred on the 2023 league mean (+0.01 RV/100). Ranks are descriptive: the year-to-year reliability of this mix on MLB has not been measured yet, so no cell is verdict-coloured. His actual run value minus this mix — execution — is deliberately not shown.