Top-ranked Serena Williams fended off three set points before going on a 10-game roll to beat Vera Zvonareva, 7-5, 6-0, and move into the third round of the Australian Open.
The men's No. 1 seed, Novak Djokovic, had an easier run, spending a minute less than Williams on Rod Laver Arena in his 84-minute, 6-0, 6-1, 6-4 win over No. 88-ranked Andrey Kuznetsov on Thursday.
Defending champion Stan Wawrinka, who ended four-time champion Djokovic's 25-match winning streak at Melbourne Park in the quarterfinals last year, advanced to the third round for the seventh consecutive year with a 7-6 (4), 7-6 (4), 6-3 win over No. 194-ranked qualifier Marius Copil.
Williams, seeking a...