Images from the Australian Open matches played at Melbourne Park on Thursday.
Djokovic's Australian Open campaign shifted up a gear with a 6-0, 6-1 6-4 thrashing of Russian Andrey Kuznetsov on Thursday to move into the third round.
The steely-eyed Serb, bidding for a record fifth title at Melbourne Park in the professional era, wrapped up the first set in 21 minutes and gave 88th-ranked Kuznetsov no chance in a one hour 24-minute training run on Rod Laver Arena.
Djokovic preserved his record of reaching the third round at Melbourne Park for a ninth consecutive year.
The top seed will play Japan's Go Soeda or Spaniard Fernando Verdasco in the next round.
Champion Wawrinka eases into third round
Defending champion Stanislas Wawrinka moved into the third round of the Australian Open with a workmanlike victory over Romanian qualifier Marius Copil on Wednesday.
The 29-year-old Wawrinka, who appeared to have some trouble with his right elbow throughout the match as he iced it during the changeovers and only recorded two aces, took two hours, 16 minutes to beat the 24-year-old 7-6(4) 7-6(4) 6-3.
Copil, the lowest ranked player in the second round at 194 and playing in the main draw of a grand slam for the first time, got the Margaret Court crowd behind him by fighting for every point and not allowing the Swiss to run away with the game.
Wawrinka, who sealed the win when a backhand drive produced a forehand error from Copil, will now play Finland's Jarkko Nieminen in the third round.
Serena advances after brief stutter
Serena Williams weathered an early challenge from Russian Vera Zvonareva before the former World No 2 crumbled to lose 7-5, 6-0 in the second round of the Australian Open on Thursday.
On a hot day at Melbourne Park, Zvonareva broke Williams twice in the first set, but a forehand winner that would have given her a set point missed the line by a whisker and her American opponent broke back.
From there it was all one-way traffic as the top seed dominated and Zvonareva surrendered after an hour and 25 minutes by meekly pushing a forehand into the tram-lines.
Williams will next play the winner of American Nicole Gibbs and Ukraine's Elina Svitolina.
