Jannik Sinner Powers Past Machac Into Miami Semifinals
World number three Jannik Sinner moved into the semi-finals of the Miami Open in emphatic style on Wednesday, beating Czech Tomas Machac 6-4, 6-2. Italian Sinner, who won his first Grand Slam title at the Australian Open this year, will play in his fourth semi of the season after dealing with lively Machac in 91…