De Minaur scraps past local legend van de Zandschulp
The top-seeded 26-year-old displayed his fighting qualities to see off a spirited challenge from the world number 65, who had never made the quarter-finals of his "home" tournament.
"Yeah, a battle. It was nothing short of that. It was topsy-turvy but a huge mental effort from my part," said de Minaur after his 3-6, 7-6 (7/4), 7-5 victory.
"This match was all about trying to dig in, find a way and if you hang in long enough, you can get there," he said.
Van de Zandschulp had never beaten the world number eight...