Rafael Nadal progressed to the Australian Open quarter-finals with a straight-set win over Adrian Mannarino as the Spaniard continues his quest for a record-breaking 21st major title.

Nadal, 35, edged an epic 28-minute first-set tie-break as he eventually converted his seventh set point.

Mannarino struggled with injury after the tie-break, as sixth seed Nadal went on to claim a 7-6 (16-14) 6-2 6-2 win.