In a star-studded Olympic Sunday, Spain’s Rafael Nadal beat Hungary’s Marton Fucsovics in three sets to book a place in the 2nd round clash of titans against Serbia’s Novak Djokovic – the 60th meeting of the long-time tennis rivals. Meanwhile, concerns keep looming over swimming competitions as the Seine River water quality remains below safety levels, threatening to postpone Tuesday’s triathlon. LeBron Olympic comeback fires US past Serbia in basketball openerIn a neat 110-84 win over Serbia, LeBron James scored 21 points, secured nine rebounds and provided seven assists, while Suns’ Kevin Du…