Angelique Kerber has defeated Alisa Kleybanova in straight sets to book her place in the third round of the Western & Southern Open.
The German ninth seed edged a close first set by taking a tie-break 5-3, but the second was more comprehensive for her.
Kleybanova, who has now slumped to number 584 in the world, was broken early in the second and eventually went down 6-2.
Kerber defeated Kleybanova over three sets in the only previous meeting between the two, which took place five years ago.
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