Answer
Andy Hug's professional K-1 debut was in 1992, and he defeated Ryuji Murakami. Murakami was the reigning K-1 Grand Prix champion, and Hug was the underdog in the fight. However, Hug used his superior speed and technique to outclass Murakami and win by unanimous decision. The victory was a major upset and helped to establish Hug as a top contender in the K-1 world.