Kiwi No 1 Marina Erakovic has added a first round doubles win to her singles success at the lucrative WTA tennis event at Stanford, California.

Erakovic and her partner Heather Watson of Great Britain looked to be romping into the second round after taking the first set 6-3 and easing to a 3-1 lead in the second.

But opponents Sesil Karatantcheva of Kazakhstan and Erika Sema of Japan then reeled off five consecutive games to take the second set 6-3 and force a super tie-break.

Erakovic and Watson then rediscovered their first set form to claim the tie-break 10-5 and the match in just over an hour to book their place in the second round.

Erakovic meanwhile will see a familiar face across the net when she takes the court for her second round singles match.

The Kiwi, who barely worked up a sweat in thrashing Slovakian qualifier Jana Juricova in the first round this morning (NZT), will play Urszula Radwanska in the second round after the Pole battled back to defeat Greece's Eleni Daniilidou 3-6 6-3 6-4.

Erakovic beat Radwanska 6-4 6-4 in the first round at Wimbledon two weeks ago, before bowing out in the second round.

Entering the Stanford tournament as the eighth seed, with a world ranking of 49, Erakovic was expected to waltz through her first round match against Juricova, the 2011 NCAA singles champion from University of California, and so she did, winning 6-2 6-2 in little more than an hour on centre court.

Wimbledon champion Serena Williams is top seed for the tournament, which has a prize pool of US$740,000.

- © Fairfax NZ News