Aus Open: Gauff, Pegula and Raducanu power into second round
The 18-year-old Gauff advanced to the second round with a 6-1, 6-4 win over Czech Republic's Katerina Siniakova.
The 18-year-old Gauff advanced to the second round with a 6-1, 6-4 win over Czech Republic's Katerina Siniakova.