“Daniil Medvedev is aiming to replace Novak Djokovic as world No.1 at the Miami Open this week and needs two more wins to do so after beating Pedro Martinez in the last 32. Medvedev, who will go back to the top of the rankings if he makes the semi-finals, came through in straight sets against Martinez. He faces either Jenson Brooksby or Roberto Bautista Agut in the last 16.”