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Yander Bonaci

BOS · Complex · Age 19 · 9.0 IP
LHP Complex BOS
5.00
ERA
Yander Bonaci is a 19-year-old LHP in the BOS organization, currently at the Complex level. Across 9.0 innings, Yander has posted a 5.00 ERA with a 5.44 xFIP and 1.89 WHIP. The strikeout rate sits at 26.1% against a 15.2% walk rate, a 10.9% K-BB% and 15.7% swinging-strike rate.
On the Statcast side, the fastball averages 86.6 mph (topping at 92.7) with +8.4" of induced vertical break and a -6.70° vertical approach angle.
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Core Metrics
ERA
5.00
xFIP
5.44
K%
26.1
BB%
15.2
Command & Stuff
WHIP
1.89
K-BB%
10.9
SwStr%
15.7
IP
9.0
Statcast Fastball Profile
Velo
86.6
Max
92.7
IVB
+8.4"
VAA
-6.70°
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Data via ProspectTilt PitchIQ — live MiLB Statcast analytics.
Stats current as of June 17, 2026. Updated nightly.
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