← BackTyron Guerrero
BOS · RHP · 2026
38.3 IP · 165 BF · 607 pitches · 2026 season
HIGH Descriptive — not a forecast
123
Stuff+
99th percentile
109
ABStuff+
98th percentile
111
Pitching+
94th percentile
24.8%
K%
73th percentile
4.2%
BB%
95th percentile
2.79
FIP
95th 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 2026 graded MLB pitchers · 38.3 IP · 165 BF · 607 pitches · 2026 season
Stuff
Stuff+123
99th percentile
ABStuff+109
98th percentile
Whiff%21.6%
46th percentile
CSW%34.8%
69th percentile
Results
Pitching+111
94th percentile
FIP2.79
95th percentile
RA/93.05
77th percentile
GB%54.8%
91th percentile
Command
K%24.8%
73th percentile
BB%4.2%
95th percentile
K-BB%20.6%
90th percentile
Velo99.0
99th 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.
ArsenalKey columns; every column is on the Arsenal tab
Movement Profile
SI+4.1/+0.7SL+2.2/-2.5FS+0.7/+2.5ring = slot expectation ±1σ/2σ · HB mirrored for LHP · descriptive
Release Traits
Height: 6.30 ft (±0.11)
Side: -1.83 ft (±0.15)
Extension: 7.09 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
95
56.8
17.9
23.2
0.0
82.1
15.6
34.7
SL
12
50.0
16.7
16.7
0.0
80.1
1.4
16.7
FS
8
37.5
25.0
25.0
0.0
79.2
5.5
37.5
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.