Nick Kyrgios and Alex de Minaur have marched on as fellow Australian Thanasi Kokkinakis lost a titanic encounter that would have befitted a much grander stage than the Cincinnati Masters first round.Nick Kyrgios beat Alejandro Davidovich Fokina, and Alex de Minaur took down qualifier Henri Laaksonen
The Wimbledon runner-up, chasing a 17th win from 19 matches, next faces big-hitting American Taylor Fritz as he continues his promising build-up to the US Open, starting in less than two weeks. The Australian number one now meets Canada's seventh-seeded Felix Auger-Aliassime, who had a first-round bye.
In a thrilling encounter full of excellent, attacking tennis, Sinner denied Kokkinakis 6-7, 6-4, 7-6.