Complex sentence: By the late 1990s Rouvas had the largest fan club of any Greek celebrity, and "Down Town" named him "The Golden Man of the Decade" in 1999.
Split into simpler sentences: By the late 1990s, Rouvas had gained the largest fan club of any Greek figure. His success led to him being dubbed "The Golden Man of the Decade" by "Down Town" in 1999.