Conversation so far:
When was Yen's first fight?
As Yen and Joey left the club, the gang followed and attacked Yen.
Yen beat up eight members of the gang who were later hospitalized.
Was Yen charged for this fight?
CANNOTANSWER.
What style of fighter was he?
both claimed that Donnie Yen is an incredible martial artist and would do well in authentic combat.

Question: Who claimed that statement?
Self-contained rewrite: What person claimed that Donnie Yen was an incredible martial artist and would do well in authentic combat?