Erakovic continued her outstanding form with a 6-3 6-0 defeat of Indian world No 33 Sania Mirza in a lop-sided second-round encounter at the Edgbaston Priory Club.
The world No 64 from Auckland needed just over an hour to beat sixth seed Mirza, who has a WTA title to her name and more than $US1 million in career prizemoney.
Erakovic now has every chance of advancing deep into the the $US200,000 ($NZ269,215) tournament.
Her third-round opponent is Russian qualifier Yaroslava Shvedova, also 20, who is ranked 129th in the world.
Croatian-born New Zealander Erakovic has hit a rich vein of form on grass less than two weeks out from her first appearance at Wimbledon.
Last week she was victorious at a $US50,000 tournament in London and yesterday carved a a straight sets first-round defeat of Canadian Stephanie Dubois.
Today's was her most convincing performance of them all, winning 58 points to 34 against an opponent considered a genuine top-10 prospect of the future.
Mirza served poorly, landing just 44 percent of her first serves, a statistic that allowed Erakovic to routinely attack the Indian's second serve to good effect.
Today's result was also a Commonwealth triumph for the New Zealander.
Erakovic is the third-ranked Commonwealth player in the world behind Mirza and 41st ranked Australian Casey Dellacqua, who was also eliminated today.
