Kiwi tennis number one Marina Erakovic has breezed into the quarterfinals at the WTA event in Memphis.

She's beaten Russian world number 137 Evgeniya Rodina 6-3 6-4 to move past the second round for the first time in six attempts this season.

Erakovic, the tournament's fourth seed, will face either Olga Govortsova or Michaella Krajicek in the quarters.