Serena Williams powers into third round at Aus Open

The dominant world number one dismissed concerns over her knee in the first round and backed that up with a 6-1 6-2 win over Chinese Taipei's Hsieh on Rod Laver Arena.

With the roof open after Melbourne's weather cleared, Williams' power was simply too much for Hsieh to handle.

The world number 90 tried some craft with slices to get into the second-round match, but that barely troubled 21-time grand slam champion Williams.

Last year's winner Williams' only problem appeared to be over-hitting as she went after Hsieh's tame serve.

Williams, who produced a stunning forehand around the net during the victory, completed her win in an hour, closing it out to love and with an ace out wide.

STATISTICAL BREAKDOWN

Williams [1] bt Hsieh Su-wei 6-1 6-2

ACES

Williams - 7

Hsieh - 0

WINNERS/UNFORCED ERRORS

Williams - 26/16

Hsieh - 9/16

BREAK POINTS WON

Williams - 4/8

Hsieh - 0/3

FIRST SERVE PERCENTAGE

Williams - 52

Hsieh - 49

PERCENTAGE OF POINTS WON ON FIRST/SECOND SERVE

Williams - 85/52

Hsieh - 39/58

TOTAL POINTS

Williams - 55

Hsieh - 34