← BackMitchell Parker
WSH · LHP · 2025
156.3 IP · 725 BF · 2,704 pitches · 2025 season
HIGH Descriptive — not a forecast
100
Stuff+
43th percentile
101
ABStuff+
53th percentile
98
Pitching+
18th percentile
14.2%
K%
11th percentile
8.0%
BB%
57th percentile
5.58
FIP
29th 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 2025 graded MLB pitchers · 156.3 IP · 725 BF · 2,704 pitches · 2025 season
Stuff
Stuff+100
43th percentile
ABStuff+101
53th percentile
Whiff%18.3%
21th percentile
CSW%31.2%
23th percentile
Results
Pitching+98
18th percentile
RV/100-0.72
35th percentile
FIP5.58
29th percentile
RA/93.91
62th percentile
GB%37.7%
35th percentile
Command
K%14.2%
11th percentile
BB%8.0%
57th percentile
K-BB%6.2%
19th percentile
Velo88.6
37th 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 2025 graded MLB pitchers · 156.3 IP · 725 BF · 2,704 pitches · 2025 season
Swing & miss
Z-Whf%11.2%
21th percentile
O-Whf%38.3%
37th percentile
Chase%29.2%
65th percentile
Z-Con%88.8%
21th percentile
O-Con%61.7%
37th percentile
SwStr%24.1%
18th percentile
PutAwy%12.3%
13th percentile
Approach
Zone%53.6%
81th percentile
Z-Swg%70.3%
77th percentile, descriptive, no good or bad direction
Swing%51.3%
84th percentile
CS%19.0%
38th percentile
F-Str%48.8%
41th 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-0.2/-2.2CB+4.3/+3.4SL-1.2/+3.9FSring = slot expectation ±1σ/2σ · HB mirrored for LHP · descriptive
Release Traits
Height: 6.24 ft (±0.17)
Side: 1.47 ft (±0.35)
Extension: 6.86 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
330
34.5
28.8
27.6
0.0
86.0
25.3
54.2
CB
108
38.9
25.0
32.4
0.0
85.2
10.9
48.1
SL
63
38.1
27.0
28.6
0.0
82.5
9.7
36.5
FS
59
52.5
28.8
16.9
0.0
84.0
6.7
44.1
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
36th pct
Separation
17.1
20th pct
Shape scatter
3.3 in
69th pct
Velo range
11.8 mph
48th pct
FF · CB · SL · FS
2025 season, 2,704 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
+0.04
63th percentile
Where he throws
+0.22
93th percentile
Which pitch there
−0.18
4th percentile
Heart35.2%
+148.26/100
Shadow40.5%
+125.76/100
Chase18.0%
−278.14/100
Waste6.3%
−488.14/100
What makes up the total
chase · FB9.0%−0.45
heart · FB20.5%+0.41
shadow · FB23.8%+0.19
waste · FB2.1%−0.13
shadow · CB8.5%+0.09
11 other locations−0.07
Total+0.04
Pitcher-positive, centred on the 2025 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.