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Naimer Rosario

ARI · Complex · Age 19 · 13.2 IP
LHP Complex ARI
9.22
ERA
Naimer Rosario is a 19-year-old LHP in the ARI organization, currently at the Complex level. Across 13.2 innings, Naimer has posted a 9.22 ERA with a 7.80 xFIP and 1.98 WHIP. The strikeout rate sits at 17.1% against a 17.1% walk rate, a 0.0% K-BB% and 10.9% swinging-strike rate.
On the Statcast side, the fastball averages 84.6 mph (topping at 90.7) with +9.5" of induced vertical break and a -7.16° vertical approach angle.
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Core Metrics
ERA
9.22
xFIP
7.80
K%
17.1
BB%
17.1
Command & Stuff
WHIP
1.98
K-BB%
0.0
SwStr%
10.9
IP
13.2
Statcast Fastball Profile
Velo
84.6
Max
90.7
IVB
+9.5"
VAA
-7.16°
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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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