Answer
Daniel Geale, a fellow Australian boxer, was Anthony Mundine's notable rival. Their highly anticipated grudge match in 2009, dubbed the "Fight of the Century," generated immense interest and became one of the most significant events in Australian boxing history. Geale, known for his exceptional skills and tenacious spirit, posed a formidable challenge to Mundine, resulting in a captivating rivalry that kept boxing enthusiasts captivated throughout their careers.