4 rounds

Ryan
Clark
VS
Gary
O'Sullivan

O'Sullivan · KO 1/4

May 21, 2011 · O2 Arena, Greenwich, 🇬🇧

Clark going in—

O'Sullivan going in11-0-0

Confirmation✓ one source

MethodKO

Round1 of 4 · 1:34

Sources

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

✓