Serena Williams saw off a mammoth challenge from world No1 Simona Halep to book her place in the quarter-finals of the Australian Open with a 6-1, 4-6, 6-4 victory on Monday.

Axar.az reports citing Evening Standart that, the seven-time champion raced through the opening set in around 20 minutes, winning six straight games to take charge of the contest on Rod Laver Arena.

But despite going a break down in the second, Halep showed resolve to twice break Williams and force a deciding set as she went toe-to-toe with the American.

With serve at 3-2 in the third, Williams saw off three break points before herself breaking Halep to put one foot in the last eight in a decisive 10-minute spell which underlined the fine margins involved at this level.

And she served out the remainder of the third set for victory.