MIAMI, March 28 — World number three Jannik Sinner will face defending champion Daniil Medvedev in the semi-finals of the Miami Open — a re-match of last year’s final — after they both enjoyed victories on Wednesday.

Sinner moved into the last four in emphatic style, beating Czech Tomas Machac 6-4, 6-2 before Medvedev overcame a stern test against Chilean Nicolas Jarry before emerging with a 6-2, 7-6 (9/7) win.