Rankings Champions vs Belts Events Head-to-Head Accuracy

OS

Onalvi Sierra

Welterweight · Colombia

27-14-224 KO

southpaw · debut 2008

Record · 2 bouts

L

Elmer Villarreal

KO R1 · 2026

L

Alexander Moreno

KO R3 · 2025

Rating: opposition-adjusted Elo / Glicko-2, weight-class normalized. Punch stats via boxing-data.

Onalvi Sierra — BOXINGRANK