---
title: "Humberto Sierra"
---

# Humberto Sierra

Nationality: Cuba

No current ranking in the latest published lists.

## Ranking history

| Month | Organization | Division | Rank |
| --- | --- | --- | --- |
| March 1948 | RING | Featherweight | #7 |
| February 1948 | RING | Featherweight | #1 |
| January 1948 | RING | Featherweight | #1 |
| November 1947 | RING | Featherweight | #1 |
| October 1947 | RING | Featherweight | #1 |
| September 1947 | RING | Featherweight | #8 |
| July 1947 | RING | Featherweight | #8 |



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