Didier Fuentes
RPQualifiedAtlanta Braves · NL · Age 21 · Bats R / Throws R · 39.7 IP · 164 BF
↑ Positive regressionBUYRank 191 of 617 pitchers by opportunity score
Opportunity Score
15
+1.0 last 7 days
HOLDProduction matches the underlying process.
Most likely driver: spin down more than velocity — grip/feel or ball-in-hand change (24% confidence).Mechanical flag: arm angle −5.6°.
W-L
4-0
SV
1
IP
39.7
K
46
BB
12
ERA
2.50
WHIP
1.13
Edge breakdown
Expected
What the batted-ball quality deserves
xERA3.05
xwOBA.272
xBA.222
xSLG.320
xBABIP.281
Actual
What the scoreboard says
ERA2.50
wOBA.259
BA.224
SLG.286
BABIP.281
Difference
Actual − expected · percentile of the gap
ERA vs xERA−0.5532
wOBA against vs xwOBA−.01332
BA against vs xBA+.00253
SLG against vs xSLG−.03422
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 | 69.5%(+11.8) | 97.1lg 94.5 | +1.1 | 8815 | 2113 | 14.6"lg 15.4 | 10.6"lg 7.8 |
| SliderNEW | 24.7% | 86.3lg 86.2 | — | 4786 | 2437 | 2.4"lg 1.5 | 4.3"lg 4.1 |
| Splitter | 5.2%(+2.1) | 89.7lg 86.7 | +1.6 | 8165 | 1993 | 7.0"lg 3.1 | 17.3"lg 11.1 |
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 −5.6°
Arm slot
14 pctl · −5.6° 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
87
xwOBA Against
87
K%
87
BB%
76
Whiff%
69
FB Velocity
88
Hard-Hit% Against
66
Spin Rate
9
30-day rolling trends
Rolling ERA vs xERA
ERAxERA
Rolling Hard-Hit% Against
Rolling FB Velocity
Rolling Stuff Index
Rolling Whiff%