WELLINGTON, Jan. 1 (Xinhua) -- The fifth-seeded American Jamie Hampton brushed aside Czech qualifier Kristyna Pliskova in straight sets to reach the quarter finals of the Auckland tennis Classic on Wednesday.
In a clinical display of power hitting from the baseline, the 23-year-old was untroubled by Pliskova, who couldn't find the form that helped her knock out the 2010 Classic champion, Yanina Wickmayer, in the first round, Radio New Zealand reported.
In her third appearance in Auckland, Hampton looked confident on centre court, winning 6-3, 6-4.
The world number 28 made the semifinals at last year's Classic before losing to eventual champion Agnieszka Radwanska.
Hampton will face compatriot Lauren Davis or the teen sensation Ana Konjuh in the next round.
Earlier, the third seed, Kirsten Flipkens, also progressed to the quarter-finals with a straight sets win over the 21-year-old Czech, Karolina Pliskova - the twin sister of Kristyna.
Flipkens, who's ranked 20th in the world, was leading 5-0 in the first set before withstanding a fightback from the Czech to close out the match 6-4 6-3.
The 27-year-old Belgian also made the quarter-finals of the Classic in 2013, before losing to compatriot Yanina Wickmayer.
Flipkens reached the semifinals at Wimbledon last year, where she lost to the eventual champion Marion Bartoli.
Also through on day three are Spaniard Garbine Muguruza, who beat Canadian qualifier Sharon Fichman 1-6, 6-3, 6-3 on the outer courts, and Kurumi Nara, who convincingly won her all-Japanese clash against Ayumi Morita 6-0, 6-1.