Roger Federer Roger Federer cruised into the third round of the Australian Open with a 6-2 6-3 6-1 win over Evgeny Korolev.
The second seed will next face 2005 champion Marat Safin of Russia, who enjoyed a 7-5 6-2 6-2 win over Spain's Guillermo Garcia-Lopez.
Novak Djokovic progressed to the last 32 with a 7-5 6-1 6-3 win over Frenchman Jeremy Chardy.
Tenth seed David Nalbandian suffered a shock 6-4 5-7 4-6 6-4 6-2 defeat to Chinese Taipei's Lu Yen-hsun.
"Maybe tonight I won't be able to sleep," said Lu.
"This is the first time I've beaten a top 10 player, and it's in a Grand Slam."
There were no such problems for 11th seed David Ferrer of Spain who beat Slovakian Dominic Hrbaty 6-2 6-2 6-1 to set up a tie with Marin Cilic.
The Croatian was in impressive form as he saw off Serbian Janko Tipsarevic 6-2 6-3 4-6 6-3 in front of a boisterous crowd on Court Two.
Federer found Russian qualifier Korolev, who defeated former world number one Carlos Moya to set up the tie, no match for him.