Will Klein
RPQualifiedLos Angeles Dodgers · NL · Age 26 · Bats R / Throws R · 38.3 IP · 167 BF
— NeutralHOLDRank 492 of 617 pitchers by opportunity score
Opportunity Score
3
+3.4 last 7 days
HOLDProduction matches the underlying process.
No diagnostic pattern fires — the profile is stable year over year.Mechanical flag: arm angle −9.2°.
W-L
3-4
SV
2
IP
38.3
K
44
BB
16
ERA
2.58
WHIP
1.41
Edge breakdown
Expected
What the batted-ball quality deserves
xERA3.31
xwOBA.283
xBA.239
xSLG.308
xBABIP.281
Actual
What the scoreboard says
ERA2.58
wOBA.296
BA.255
SLG.322
BABIP.281
Difference
Actual − expected · percentile of the gap
ERA vs xERA−0.7327
wOBA against vs xwOBA+.01368
BA against vs xBA+.01670
SLG against vs xSLG+.01456
BABIP against vs xBABIP+.00050
Arsenal & pitch shapes
2026 usage, velocity, and movement per pitch · dashed ring = league average for that pitch type · movement in inches, pitcher's perspective
| Pitch | Usage | Velo | vs 2025 | Velo pctl | Spin | IVB | HB |
|---|---|---|---|---|---|---|---|
| 4-Seam Fastball | 49.9%(−7.4) | 97.6lg 94.5 | −0.3 | 9256 | 2208 | 15.6"lg 15.4 | 9.1"lg 7.8 |
| Sweeper | 28.3%(+23.7) | 88.6lg 82.5 | −2.2 | 9845 | 2503 | -3.5"lg 0.9 | 12.8"lg 13.7 |
| Curveball | 17.1%(−4.9) | 85.0lg 80.3 | −0.7 | 9098 | 2473 | -13.2"lg -10.3 | 8.7"lg 8.8 |
| SliderNEW | 4.7% | 91.1lg 86.2 | — | 9762 | 2385 | —lg 1.5 | —lg 4.1 |
IVB = induced vertical break (rise vs gravity-only). HB = horizontal break. Velo percentile is against all pitchers throwing the same pitch type. Sources: Savant pitch arsenals & movement leaderboards.
Mechanics Watch
2026 in gold · 2025 dashed · thin ticks = league average
Arm Angle −9.2°
Arm slot
70 pctl · −9.2° vs prior
What this can't see: Joint kinetics, hip-shoulder separation, and kinematic sequencing (Hawkeye/KinaTrax, team-internal — never estimated here). Stance angle and foot separation (Savant visuals only, no export). Release extension (column exported empty; needs pitch-level ingest).
Recent games
Percentile rankings
xERA
80
xwOBA Against
80
K%
79
BB%
36
Whiff%
31
FB Velocity
92
Hard-Hit% Against
58
Spin Rate
26
30-day rolling trends
Rolling ERA vs xERA
ERAxERA
Rolling Hard-Hit% Against
Rolling FB Velocity
Rolling Stuff Index
Rolling Whiff%