Agnieszka Radwanska has moved into the third round of the Madrid Open with a straight-sets victory over Australian Casey Dellacqua.

The world number nine raced into a 3-0 lead in the first set after breaking Dellacqua in her first service game.

Radwanska then saved three break points in the fifth game to maintain her advantage before serving out the set 6-2.

The second set followed a similar pattern to the first, with world number 44 Dellacqua allowing Radwanska to break at the first attempt. The Polish player was comfortable in keeping hold of her lead and broke again in the sixth game to move 5-1 up.

Radwanska served out the match at the first time of asking to set up a third-round clash against either Caroline Wozniacki or Christina McHale.