Seoul - Top seed and defending champion Agnieszka Radwanska handed out a humiliating 6-0, 6-0 beating to Chanelle Scheepers on Wednesday to reach the WTA Korea Open quarter-finals.
The former Wimbledon finalist swept past the South African in just 49 minutes to set up a meeting with Varvara Lepchenko as she attempts to successfully defend a title for the first time.
Radwanska's fourth WTA-level "double bagel" gives the Polish world number five a chance for revenge over Lepchenko, to whom she lost at Stanford in July.
America's Lepchenko progressed with a win over South Korean wildcard Han Na-Lae, who gave up a set point before losing 7-5, 6-1.
"Overall I think I started a bit slowly, but I managed to put it together and started playing better and getting my focus together in the second set," Lepchenko said.
"It was just about staying in the game and staying focused at the right moments. I got more comfortable as the match went on."