10 rounds

Francisco
Sierra
VS
Rigoberto
Álvarez

Álvarez · KO 10/10

Updated Oct 12, 2026 · Sources: English Wikipedia, Wikipedia (ja)

Dec 15, 2006 · Guadalajara, Jalisco, 🇲🇽

Sierra going in11-1-0

Álvarez going in13-0-0

Confirmation✓✓ two sources

MethodKO

Round10 of 10

Sources

English Wikipedia
side a · observed 2026-10-11
en.wikipedia.org/wiki/Francisco_Sierra_(boxer)

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English Wikipedia
side b · observed 2026-10-11
en.wikipedia.org/wiki/Rigoberto_Álvarez

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