MELBOURNE, Jan ‌25 (Reuters) - Australian number one Alex de Minaur pierced 10th-seeded Kazakh ‌Alexander Bublik's defences with relentless pressure to seal a 6‑4 ‌6‑1 6-1 win on Sunday, reaching his second straight Australian Open quarter-final and seventh at the Grand Slams overall.

De Minaur, who is looking to become the first ‍Australian man to claim the Norman Brookes Challenge ‍Cup since Mark Edmondson's ‌triumph 50 years ago, will face top seed Carlos Alcaraz and needs ‍a ​maiden win over the Spaniard for a place in the semi-finals.