Miami [US], March 28 (ANI): A dominant Jannik Sinner notched a comfortable victory against Czech Tomas Machac at the ongoing Miami Open and reached his fourth semi-final of the year. The Italian with a squeaky-clean performance defeated Tomas Machac 6-4, 6-2, converting four of his 11 break chances in a match that lasted for 91 minutes. “I didn’t exactly know what to expect today. The first games I was looking a little bit what kind of tactics could work or not… Today I played good, especially in the important moments of the match. I’m really happy to play again in the semis here,” Sinner sa…