10 rounds

Flipper
Uehara
VS
Rigoberto
Riasco

Riasco · PTS 10/10

Oct 21, 1974 · Korakuen Hall, Tokyo, 🇯🇵

Uehara going in8-1-1

Riasco going in15-4-4

Confirmation✓✓ two sources

MethodPTS

Round10 of 10

Sources

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

✓

Wikipedia (ja)
side a · observed 2026-10-12
ja.wikipedia.org/wiki/フリッパー上原

✓