USA's Gauff beat Czech Republic's Siniakova 6-1, 6-4.Seventh seed Coco Gauff defeats Katerina Siniakova in first round of Australian Open women's singles.USA's Gauff beat Czech Republic's Siniakova 6-1, 6-4.PromotedListen to the latest songs, only on JioSaavn.comAlso ReadCzech Tennis Couple Who Split And Won Gold Jokes Their Status Is 'Top Secret'"10 Girls, 2 Bathrooms": Coco Gauff On Why Her Teammates Left Olympic Village For HotelParis Olympics: Coco Gauff To Make History As Youngest US Flag Bearer At Opening Ceremony