American qualifier Lauren Davis beat second-seeded Sorana Cirstea of Romania 6-1, 6-3 in a rain-interrupted, second-round match Tuesday at the Hobart International.
Cirstea's elimination followed that of top-seeded Hsieh Su-wei on Monday and leaves No. 3 Klara Zakopalova as the highest-seeded player remaining at the Domain Tennis Centre. On Tuesday, the Czech advanced with a 6-4, 6-3 first-round win over Timea Babos of Hungary.
Elena Vesnina of Russia beat fourth-seeded Yaroslava Shvedova of Kazakhstan 4-6, 6-2, 6-1 in a second-round match.
Eighth-seeded Sloane Stephens of the United States, who lost to Serena Williams in the quarterfinals of the Brisbane International, advanced to the last eight with a 6-4, 6-0 win over Simona Halep of Romania.
Ninth-seeded Mona Barthel of Germany also advanced to the quarterfinals, defeating Chanelle Scheepers of South Africa 7-6 (3), 7-5.