Angelique Kerber defeats Alison Riske in straight sets

Angelique Kerber has defeated Alison Riske 6-3 6-4 in the third round of the Australian Open.

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The German wasted no time highlighting the gulf in class between the pair, landing a break in the opening game and again at 3-3 before wrapping up the opener.

American Riske posed more of a threat in the second set, finding herself 4-3 and a break to the good before Kerber turned on the style and clinched the remaining two games.

The ninth seed will take on Flavia Pennetta of Italy in round four.