Federer, Kerber guarded about new Australian Open tie-break rule

The year's opening Grand Slam will for the first time feature an extended tie-break in the final set when the score reaches 6-6. To win the decisive.Australian Open. ti-break. Roger Federer. Angelique Kerber

Roger Federer, Angelique Kerber Cautious on New Aus Open Tie-break Rule - News18

WTA Finals: Kerber beat Radwanska to set up title clash with Cibulkova, Kerber beat Radwanska, wta finals, Cibulkova, Tennis News

Australian Open 2019: Andy Murray ready for return, Roger Federer & Caroline Wozniacki defend titles - BBC Sport

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Australian Open 2019: Andy Murray ready for return, Roger Federer & Caroline Wozniacki defend titles - BBC Sport

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