The Chennai-based Pallikal Karthik maintained her winning run against Whitlock of England, beating her for the fourth time, late yesterday.
Pallikal Karthik looked to be cruising to victory before the 13th-ranked Englishwoman bounced back to take the third game. The Indian won the fourth 11-8 to move into the quarters, said a SRFI press note here.
The lone Indian in the tournament, ranked 21 in the world, faces Olivia Blatchford of USA in the last eight.