Australian Open results

Following are the results from the Australian Open on Thursday (prefix number denotes seeding):

Men's singles second round

Steve Johnson, United States, bt Santiago Giraldo, Colombia, 6-3, 6-4, 6-2

19-John Isner, United States, bt Andreas Haider-Maurer, Austria, 6-4, 7-6 (7-4), 4-6, 6-4

Jarkko Nieminen, Finland, bt Matthias Bachinger, Germany, 7-6 (7-4), 7-5, 7-5

Guillermo Garcia-Lopez, Spain, bt Alejandro Gonzalez, Columbia, 6-1, 6-3, 6-3

5-Kei Nishikori, Japan, bt Ivan Dodig, Croatia, 4-6, 7-5, 6-2, 7-6 (7-0)

12-Feliciano Lopez, Spain, bt Adrian Mannarino, France, 4-6, 4-6, 7-6 (7-3), 4-0 retired

1-Novak Djokovic, Serbia, bt Andrey Kuznetsov, Russia, 6-0, 6-1, 6-4

4-Stan Wawrinka, Switzerland, bt Marius Copil, Romania, 7-6 (7-4), 7-6 (7-4), 6-3

Gilles Muller, Luxemburg, bt 13-Roberto Bautista Agut, Spain, 7-6 (7-5), 1-6, 7-5, 6-1

Vasek Pospisil, Canada, bt Paolo Lorenzi, Italy, 6-7 (3-7), 7-6 (7-4), 6-3, 6-4

18-Gilles Simon, France, bt Marcel Granollers, Spain, 7-6 (7-5), 6-2, 6-4

Women's singles second round

6-Agnieszka Radwanska, Poland, bt Johanna Larsson, Sweden, 6-0, 6-1

18-Venus Williams, United States, bt Lauren Davis, United States, 6-2, 6-3

Timea Bacsinszky, Switzerland bt Anna Tatishvili, United States, 6-7 (5-7), 6-3, 6-2

24-Garbine Muguruza, Spain, bt Daniela Hantuchova, Slovakia, 6-1, 1-6, 6-0

1-Serena Williams, United States, bt Vera Zvonareva, Russia, 7-5, 6-0

Camila Giorgi, Italy, bt Tereza Smitkova, Czech Republic, 6-1, 6-4

Elina Svitolina, Ukraine, bt Nicole Gibbs, United States, 7-6 (7-3), 7-6 (8-6)

11-Dominika Cibulkova, Slovakia, bt Tsvetlana Pironkova, Bulgaria, 6-2, 6-0

30-Varvara Lepchenko, United States, bt Ajla Tomljanovic, Australia, 6-1, 7-6 (7-1)

Madison Keys, United States, bt 29-Casey Dellacqua, Australia, 2-6, 6-1, 6-1

19-Alize Cornet, France, bt Denisa Allertova, Czech Republic, 6-4, 6-7 (2-7), 6-2

Endi