Sinner downs Michelsen to reach Miami Open quarter-finals

Italian second seed Sinner, who is bidding to follow up his triumph at Indian Wells with victory in Miami, bided his time before completing a 7-5, 7-6 (7/4) win in 1hr 41mins. The four-time Grand Slam champion, who will face either 19th seed Frances Tiafoe or France's Terence Atmane in the last eight, was made to work hard by the 40th-ranked Michelsen. After a cagey opening Sinner began to put pressure on Michelsen's serve in the ninth game of the first set, carving out three break points. Michelsen rode out that storm...