Conversation so far:
Did Gennady Golovkin fight Proksa?
Golovkin put on an impressive performance in his American debut by battering Proksa to a fifth-round TKO, which was Proksa's first loss by knockout.
How many rounds did the fight go?
fifth-round TKO.
Was the fight popular with people?
The fight was televised on HBO in the United States and Sky Sports in the UK.

Question: What is Golokin's  fighting style?
Self-contained rewrite: What is Golovkin's fighting style?