Alexander Zverev vs Jannik Sinner — SF — Miami Open

Sinner needed only one return chance to crack a serve Zverev otherwise kept clean — the lone break came in game four of the opener, and the German went 0-for-2 on his own break points the rest of the way. The serve carried the second set to a tiebreak, where Sinner's 15 aces to Zverev's five settled it. He moves to 7-1 in the rivalry and books Lehecka next.