Thomaz Cocchiarali Bellucci is a Brazilian former professional tennis player. He achieved a career-high singles ranking of World No. 21 in July 2010.

Defending gold medalist Andy Murray of Great Britain successfully retained his title, defeating Juan Martín del Potro of Argentina in the final, 7–5, 4–6, 6–2, 7–5 to win the gold medal in Men's singles tennis at the 2016 Summer Olympics. He became the first tennis player ever, male or female, to win two Olympic singles gold medals. Murray and del Potro were only the third and fourth men to win multiple singles medals of any color. Murray's gold was Great Britain's fifth in men's singles, the most of any nation. In the bronze medal match, Japan's Kei Nishikori defeated Spain's Rafael Nadal, 6–2, 6–7(1–7), 6–3, earning Japan's first men's singles Olympic medal since 1920.