Novak Djokovic cruised into the quarter-finals of the Miami Open on Tuesday with a 6-2, 6-2 win over Italian Lorenzo Musetti in one hour 22 minutes. 

Musetti, the 15th seed from Tuscany, got off to a flying start to take a 2-0 lead in the first set, but then proceeded to lose the next nine games as the Serb, looking confident and sharp, ran away with the match.