Champions Wozniacki, Federer on Different Ends of Spectrum

(L) Men's defending singles champion Switzerland's Roger Federer answers a question during a press conference at the Australian Open tennis championships in Melbourne, Australia, Jan. 13, 2019. (AP Photo/Mark Schiefelbein) (R) Defending women's singles champion Denmark's Caroline Wozniacki answers questions during a press conference at the Australian Open tennis championships in Melbourne, Australia, Jan. 13, 2019. AP Photo/Kin Cheung

Caroline Wozniacki is entering new territory at the Australian Open as a defending champion for the first time at a major. For Roger Federer, it’s a well-worn experience.

A women’s final last year featuring two players aiming for their first Grand Slam title finished with Wozniacki holding off top-ranked Simona Halep for the championship.