Disciplined Ferrer powers into Australian open quarters

David Ferrer wore down Japan’s Kei Nishikori over three physical sets to reach the Australian Open quarter-finals for a third straight year on Sunday.
The Spanish fourth seed was far too consistent and disciplined for the 16th-seeded Nishikori, winning 6-2, 6-1, 6-4 in 2hr 10min in rising temperatures on Rod Laver Arena.